diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
index d40c37b..01711ca 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
@@ -70,8 +70,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -99,8 +98,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
index 5c0d782..9ce4523 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
@@ -70,8 +70,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -113,8 +112,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_01.ast
index e569587..de81aed 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_01.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_02.ast
index eaedfc8..dcd7ab5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_02.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_03.ast
index b8e4be5..9a5df78 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-join_03.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_01.ast
index 23838af..b095188 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_01.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_02.ast
index 9b8a744..31c5af0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_02.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_03.ast
index 9c19a99..ca4fecf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_03.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_04.ast
index 0dba494..60b812b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_04.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_05.ast
index df5155d..fb0b3ac 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_05.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_06.ast
index 3cd7b3b..a6ad0f3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-composite-key-prefix-join_06.ast
@@ -25,14 +25,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-multipred.ast
index d100ca6..7a8256b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-multipred.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_01.ast
index 77ccb17..0ae9640 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_02.ast
index c4a3066..5a53c53 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join-neg_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_01.ast
index 363e2d1..eb8ec5b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_02.ast
index e6df727..02082bc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_03.ast
index b5cd3df..12a36c5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_03.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_04.ast
index a286fa1..654653e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_04.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_05.ast
index a816f41..d936815 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-equi-join_05.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c1 ]
+  AS Variable [ Name=$c1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c2 ]
+  AS Variable [ Name=$c2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_01.ast
index cdea847..81d0e99 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_02.ast
index 1bab83f..63a099c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-ge-join_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_01.ast
index b05edcd..5b5a6c5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_02.ast
index b5149ae..0ec0932 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-gt-join_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_01.ast
index c978bae..70aadf8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_02.ast
index 3ca0c87..63d206c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-le-join_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_01.ast
index e8fb351..231a985 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_01.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_02.ast
index 0caecd8..ffd13a3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/primary-lt-join_02.ast
@@ -16,14 +16,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multiindex.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multiindex.ast
index 42f474a..b2cd632 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multiindex.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multiindex.ast
@@ -74,14 +74,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multipred.ast
index e816d36..e427618 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join-multipred.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_01.ast
index 76f6bd4..e5b912c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_02.ast
index bbb77d8..8752c77 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_03.ast
index 3764ad9..3516ec1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index-join/secondary-equi-join_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-01.ast
index 5e65a25..b38f1e1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-01.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CHPReports]
   ]
-  AS
-  Variable [ Name=$emergency ]
+  AS Variable [ Name=$emergency ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-02.ast
index e8316a1..d29c586 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-02.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CHPReports]
   ]
-  AS
-  Variable [ Name=$emergency ]
+  AS Variable [ Name=$emergency ]
 ]
 Let Variable [ Name=$time ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-03.ast
index 8ab6f65..d91bde6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-03.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CHPReports]
   ]
-  AS
-  Variable [ Name=$emergency ]
+  AS Variable [ Name=$emergency ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-04.ast
index a77d90d..ff0f468 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-datetime-04.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CHPReports]
   ]
-  AS
-  Variable [ Name=$emergency ]
+  AS Variable [ Name=$emergency ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-01.ast
index e1171fd..ca6b464 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-01.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-02.ast
index 2d631e9..4ff1776 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-02.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-03.ast
index 26342a2..72f6e53 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-03.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-04.ast
index 99d927c..4c7d7e2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-04.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-05.ast
index 454aa2a..888d8bb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-05.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-06.ast
index 9728b71..8d4e7c7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-06.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-07.ast
index 1b173a6..e07b6a3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-07.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-08.ast
index d495bd5..3bde6c3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-08.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-09.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-09.ast
index 937614a..193ba2f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-09.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-09.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-10.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-10.ast
index f5e7250..7c934ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-10.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-10.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-11.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-11.ast
index 51f9008..d14d1610 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-11.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-11.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-12.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-12.ast
index 5fad48f..74507b1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-12.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-12.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-13.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-13.ast
index e244a3c..3a1e8c2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-13.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-13.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-14.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-14.ast
index cad85cf..105c9e8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-14.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-14.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-15.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-15.ast
index 3e4ce8e..5ef21e9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-15.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-15.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-16.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-16.ast
index d5c4b08..a83918f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-16.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-16.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-17.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-17.ast
index 0c5a2ef..5335a9d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-17.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-17.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-18.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-18.ast
index 1ebf9dc..a083cae 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-18.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-18.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-19.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-19.ast
index f5d165a..acee21f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-19.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-19.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-20.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-20.ast
index 643bd68..8daf39c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-20.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-20.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-21.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-21.ast
index 6c95c8e..d6f14a4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-21.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-21.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-22.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-22.ast
index 1b7f14c..9fefece 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-22.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-22.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-23.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-23.ast
index 1489177..d42ddff 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-23.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-23.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-24.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-24.ast
index bfd6ec7..8b60775 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-24.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-24.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-25.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-25.ast
index 250593b..3de69d0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-25.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-25.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-26.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-26.ast
index 3e5f4ad..744b9e1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-26.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-26.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-27.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-27.ast
index 1b557e1..47b67c8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-27.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-27.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-28.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-28.ast
index 9de9899..11b9e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-28.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-28.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-29.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-29.ast
index b545fe0..8e90953 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-29.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-29.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-30.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-30.ast
index dcaad7a..75d9cba 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-30.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-30.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-31.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-31.ast
index cfa51cc..39a45ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-31.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-31.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-32.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-32.ast
index 0b650e5..454d067 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-32.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-primary-32.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-33.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-33.ast
index e617f89..b50448f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-33.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-33.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-34.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-34.ast
index 1ad5684..d710bdb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-34.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-34.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-35.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-35.ast
index d123ecc..115c6a3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-35.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-35.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-36.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-36.ast
index 0a26c3f..920451c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-36.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-36.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-37.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-37.ast
index a527ee8..fa228c6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-37.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-37.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-38.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-38.ast
index ccc261a..72fde4a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-38.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-38.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-39.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-39.ast
index e050940..696bc6d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-39.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-39.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-40.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-40.ast
index 60f834a..b72c872 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-40.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-40.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-41.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-41.ast
index 88b4bc7..d8c01fa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-41.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-41.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-42.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-42.ast
index 38ddc06..78c3770 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-42.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-42.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-43.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-43.ast
index 28ef712..698e60b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-43.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-43.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-44.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-44.ast
index 9e3d870..e3cd238 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-44.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-44.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-45.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-45.ast
index d7cca40..e121e63 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-45.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-45.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-46.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-46.ast
index 90a0220..aed815b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-46.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-46.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-47.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-47.ast
index ebd604a..def0f05 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-47.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-47.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-48.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-48.ast
index 1960561..faf6fc9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-48.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-48.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-49.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-49.ast
index 6add2f0..b99abe6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-49.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-49.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-50.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-50.ast
index f9e6dca..1b41c8e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-50.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-50.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-51.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-51.ast
index 4002159..6fb10fe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-51.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-51.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-52.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-52.ast
index f4c2592..43f7299 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-52.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-52.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-53.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-53.ast
index 6d301c4..bdc08f0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-53.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-53.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-54.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-54.ast
index 2c5b71e..c261e9c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-54.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-54.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-55.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-55.ast
index a9597c2..2bebe8e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-55.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-55.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-56.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-56.ast
index 206efab..fe35314 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-56.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-56.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-57.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-57.ast
index f1f64fc..d9c9e69 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-57.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-57.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-58.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-58.ast
index 40cb76e..8c871da 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-58.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-58.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-59.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-59.ast
index f2e1cfd..b282cf8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-59.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-59.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-60.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-60.ast
index eb2ef9d..e70a20d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-60.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-60.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-61.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-61.ast
index ef77d3d..6c7a193 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-61.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-61.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-62.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-62.ast
index 88655f2..da34279 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-62.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-62.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-63.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-63.ast
index d858883..983aece 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-63.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/btree-index/btree-secondary-63.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/collocated.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/collocated.ast
index 3bdd7a4..22a8fcd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/collocated.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/collocated.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Users]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Visitors]
   ]
-  AS
-  Variable [ Name=$visitor ]
+  AS Variable [ Name=$visitor ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-complex.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-complex.ast
index 3082677..85002c0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-complex.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-complex.ast
@@ -28,8 +28,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-simple.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-simple.ast
index 3b3e1ec..b71d1cf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-simple.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/consolidate-selects-simple.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/count-tweets.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/count-tweets.ast
index b4dd527..463c2ab 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/count-tweets.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/count-tweets.ast
@@ -30,8 +30,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -41,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterData]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tokens]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Let Variable [ Name=$tokens ]
   :=
@@ -62,14 +59,10 @@
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$tokens ]
-   AS tokens
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$t ]
-   AS t
+    tokens:=Variable [ Name=$tokens ]
+    token:=Variable [ Name=$token ]
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/cust_group_no_agg.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/cust_group_no_agg.ast
index 7157aa2..93c98ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/cust_group_no_agg.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/cust_group_no_agg.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Groupby
   Variable [ Name=$name ]
@@ -30,10 +29,8 @@
     Variable [ Name=$c ]
     Field=c_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$c ]
-   AS c
+    c:=Variable [ Name=$c ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/denorm-cust-order.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/denorm-cust-order.ast
index e734a11..28bcc99 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/denorm-cust-order.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/denorm-cust-order.ast
@@ -59,8 +59,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -75,14 +74,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
@@ -103,12 +100,9 @@
     Variable [ Name=$c ]
     Field=cid
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/distinct_aggregate.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/distinct_aggregate.ast
index 0ef35c0..679e9d5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/distinct_aggregate.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/distinct_aggregate.ast
@@ -46,8 +46,7 @@
         ]
         ]
         FROM [          Variable [ Name=#2 ]
-          AS
-          Variable [ Name=#3 ]
+          AS Variable [ Name=#3 ]
         ]
       )
     ]
@@ -77,8 +76,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItems_q1]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
@@ -108,16 +106,13 @@
         Variable [ Name=$l ]
         Field=l_suppkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$l ]
-       AS l
+        l:=Variable [ Name=$l ]
       )
 
   )
-  AS
-  Variable [ Name=$g ]
+  AS Variable [ Name=$g ]
 ]
 Groupby
   Variable [ Name=$l_returnflag ]
@@ -132,11 +127,9 @@
     Variable [ Name=$g ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$g ]
-   AS g
+    g:=Variable [ Name=$g ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/filter-nested.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/filter-nested.ast
index 5971ca5..3819ead 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/filter-nested.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/filter-nested.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-dblp-csx.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-dblp-csx.ast
index 8eaada8..3ca4a03 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-dblp-csx.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-dblp-csx.ast
@@ -38,26 +38,22 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tokensDBLP]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tokensCSX]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -80,8 +76,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$unrankedTokensDBLP ]
-      AS
-      Variable [ Name=$token ]
+      AS Variable [ Name=$token ]
 ,
       (
         SELECT ELEMENT [
@@ -93,14 +88,12 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
         ]
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -134,8 +127,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$unrankedTokensCSX ]
-      AS
-      Variable [ Name=$token ]
+      AS Variable [ Name=$token ]
 ,
       (
         SELECT ELEMENT [
@@ -147,14 +139,12 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
         ]
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -180,29 +170,18 @@
   Variable [ Name=$idCSX ]
   :=
   Variable [ Name=$idCSX ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$unrankedTokensCSX ]
-   AS unrankedTokensCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$unrankedTokensDBLP ]
-   AS unrankedTokensDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    unrankedTokensCSX:=Variable [ Name=$unrankedTokensCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    unrankedTokensDBLP:=Variable [ Name=$unrankedTokensDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase1.ast
index 665925e..05c7abf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase1.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Users]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Let Variable [ Name=$tokens ]
   :=
@@ -52,8 +51,7 @@
         Variable [ Name=$user ]
         Field=lottery_numbers
       ]
-      AS
-      Variable [ Name=$lottery_number ]
+      AS Variable [ Name=$lottery_number ]
 ,
       (
         SELECT ELEMENT [
@@ -62,27 +60,22 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Users]
           ]
-          AS
-          Variable [ Name=$user ]
+          AS Variable [ Name=$user ]
 ,
           FieldAccessor [
             Variable [ Name=$user ]
             Field=lottery_numbers
           ]
-          AS
-          Variable [ Name=$lottery_number ]
+          AS Variable [ Name=$lottery_number ]
         ]
         Groupby
           Variable [ Name=$item ]
           :=
           Variable [ Name=$lottery_number ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$lottery_number ]
-           AS lottery_number
-          Variable [ Name=$user ]
-           AS user
+            lottery_number:=Variable [ Name=$lottery_number ]
+            user:=Variable [ Name=$user ]
           )
 
         Let Variable [ Name=$count ]
@@ -96,8 +89,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -106,10 +98,9 @@
           DESC
 
       )
-      AS
-      Variable [ Name=$token ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$token ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase2-with-hints.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase2-with-hints.ast
index d5f7086..a0c6feb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase2-with-hints.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/fj-phase2-with-hints.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP_fuzzyjoin_078]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$unrankedTokensDBLP ]
   :=
@@ -49,8 +48,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$unrankedTokensDBLP ]
-      AS
-      Variable [ Name=$token ]
+      AS Variable [ Name=$token ]
 ,
       (
         SELECT ELEMENT [
@@ -59,8 +57,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP_fuzzyjoin_078]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin_078.counthashed-word-tokens@1[
             FieldAccessor [
@@ -68,24 +65,18 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Groupby
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$unrankedTokensDBLP ]
-           AS unrankedTokensDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            unrankedTokensDBLP:=Variable [ Name=$unrankedTokensDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -98,8 +89,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -108,10 +98,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/hashjoin-with-unnest.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/hashjoin-with-unnest.ast
index ce77f96..4befebd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/hashjoin-with-unnest.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/hashjoin-with-unnest.ast
@@ -26,28 +26,24 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t2]
   ]
-  AS
-  Variable [ Name=$n ]
+  AS Variable [ Name=$n ]
 ,
   FieldAccessor [
     Variable [ Name=$m ]
     Field=hobbies
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FieldAccessor [
     Variable [ Name=$n ]
     Field=hobbies
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inlined_q18_large_volume_customer.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inlined_q18_large_volume_customer.ast
index c1a4237..72a1958 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inlined_q18_large_volume_customer.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inlined_q18_large_volume_customer.ast
@@ -88,8 +88,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$j ]
+          AS Variable [ Name=$j ]
         ]
       )
     ]
@@ -99,14 +98,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   (
     SELECT ELEMENT [
@@ -128,8 +125,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -139,8 +135,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItems]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -149,26 +144,20 @@
         Variable [ Name=$l ]
         Field=l_orderkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$l ]
-       AS l
-      Variable [ Name=$o ]
-       AS o
-      Variable [ Name=$c ]
-       AS c
+        l:=Variable [ Name=$l ]
+        o:=Variable [ Name=$o ]
+        c:=Variable [ Name=$c ]
       )
 
   )
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItems]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -250,17 +239,12 @@
     Variable [ Name=$o ]
     Field=o_totalprice
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    t:=Variable [ Name=$t ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/introhashpartitionmerge.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/introhashpartitionmerge.ast
index c54a88a..c224055 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/introhashpartitionmerge.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/introhashpartitionmerge.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TOKENSRANKEDADM]
   ]
-  AS
-  Variable [ Name=$token1 ]
+  AS Variable [ Name=$token1 ]
 ,
   (
     SELECT ELEMENT [
@@ -27,8 +26,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TOKENSRANKEDADM]
       ]
-      AS
-      Variable [ Name=$tokenRanked ]
+      AS Variable [ Name=$tokenRanked ]
     ]
     Orderby
       FieldAccessor [
@@ -38,8 +36,7 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$token2 ]
+  AS Variable [ Name=$token2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains-panic.ast
index 8fb8650..3bb06a1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains-panic.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains.ast
index 87e800c..3b23ad3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-contains.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check-panic.ast
index 0923370..6e1d778 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check-panic.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check.ast
index 719e6dc..f0f26f7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-check.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-panic.ast
index 69b25e7..a6cc261 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance-panic.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance.ast
index 563cd79..3497e0b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-edit-distance.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
index 2f7113f..2d1b704 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
index 7293d9f..16c59cc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard-check.ast
index 043ca2d..53f5aea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard-check.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard.ast
index b38a521..77d79d4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ngram-jaccard.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check-panic.ast
index 9a3be27..9bd1307 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check-panic.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check.ast
index c287438..ef87a0f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-check.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-panic.ast
index a89ea63..7585c77 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance-panic.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance.ast
index 2678e6f..996579c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-edit-distance.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
index 60c51d5..1c8e0f2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-jaccard.ast
index 06f21ab..d160b3d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-fuzzyeq-jaccard.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard-check.ast
index 36d3a68..4e9022d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard-check.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard.ast
index 62ee708..8080acc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/olist-jaccard.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
index c17bafa..9406dbe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard-check.ast
index d676a98..85089a3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard-check.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard.ast
index 6fe9da2..6c49160 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/ulist-jaccard.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-contains.ast
index 20c0e4d..e8599ac 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-contains.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-fuzzyeq-jaccard.ast
index 89251b0..82815c0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-fuzzyeq-jaccard.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard-check.ast
index 455c444..caf6e58 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard-check.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard.ast
index 157c61c..3dc9f3c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-basic/word-jaccard.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
index 70e1376..74efe7c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$eda ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
index cf61129..09b0a77 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$edb ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
index fbf5775..2f9485e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let.ast
index 9e5a08e..9d9ea14 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-let.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-substring.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-substring.ast
index e3f9037..2729744 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-substring.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-substring.ast
@@ -34,8 +34,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
index 25105bd..4477fec 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
@@ -34,8 +34,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -43,8 +42,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-let.ast
index 9c8361a..6619c88 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-let.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-multi-let.ast
index d49d0d5..a5802e0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ngram-jaccard-check-multi-let.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let-panic.ast
index 9fc454b..2219ee3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let-panic.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let.ast
index 16e2f50..3522b17 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-edit-distance-check-let.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-jaccard-check-let.ast
index 3de86ee..25a1bb8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/olist-jaccard-check-let.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ulist-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ulist-jaccard-check-let.ast
index a2edc63..2999bac 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ulist-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/ulist-jaccard-check-let.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-let.ast
index 9aff0cd..39a3809 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-let.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-multi-let.ast
index e67a0d1..65008dc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-complex/word-jaccard-check-multi-let.ast
@@ -28,8 +28,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline.ast
index 6c980e0..1a75711 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance.ast
index 5c7413e..c514384 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-edit-distance.ast
index 15c0279..545d8a2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-edit-distance.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-jaccard.ast
index f56490c..27cef5f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-fuzzyeq-jaccard.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline.ast
index 7cbe6f0..1996cb4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard.ast
index 9c1b109..43e0157 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline.ast
index 3c1c726..c7a0161 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline.ast
@@ -53,14 +53,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance.ast
index 208cd79..809f4f0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-edit-distance.ast
index 30ead54..3ec9ea2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-edit-distance.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-jaccard.ast
index a5b3450..936c479 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-fuzzyeq-jaccard.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline.ast
index a763a16..a359b5e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline.ast
@@ -53,14 +53,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard.ast
index f0bbad6..e4d2cdd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-fuzzyeq-jaccard.ast
index 06e3c7c..65bf44c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-fuzzyeq-jaccard.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline.ast
index 1a99495..0e8e1ad 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline.ast
@@ -53,14 +53,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard.ast
index fb817ac..a1fc871 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-fuzzyeq-jaccard.ast
index 7a13d8d..fede0ed 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-fuzzyeq-jaccard.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline.ast
index fed02b3..58eb1c5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard.ast
index 76663a3..eb8b0fa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/issue741.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/issue741.ast
index 58fe1a7..6fc02d1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/issue741.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/issue741.ast
@@ -46,8 +46,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
index 38719d4..fb847b3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
@@ -76,8 +76,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -125,8 +124,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
index d05763c..3d78efa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
@@ -76,8 +76,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -125,8 +124,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-contains.ast
index 5f6aa56..5e2960d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-contains.ast
@@ -34,14 +34,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_01.ast
index 1be814b..ee612b2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_02.ast
index 91bc760..39ccc42 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_03.ast
index 0d49278..04015ab 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_04.ast
index ab5ad22..85e571d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-check_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-contains.ast
index 7db7b68..1521977 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-contains.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_01.ast
index 248dcb8..a44fe96 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_02.ast
index 766ad24..f08489c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_03.ast
index 199d2a3..ffbc7ad 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_04.ast
index 5de8bbb..e127a2e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-edit-distance_04.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
index aedacd8..307f458 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
index aedacd8..307f458 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
index 41eedf3..21aaa28 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
index e15988c..712d3aa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
@@ -41,14 +41,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
index 5d1fa14..63ebfc4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
@@ -41,14 +41,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
index 752e806..f2868ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_01.ast
index 5ffc1cd..91566e8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_01.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_02.ast
index 58b0f70..fbb47b9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_02.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_03.ast
index ebd3d2f..3ec5d27 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_04.ast
index 7c7d647..e143a2d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard-check_04.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_01.ast
index 6ed6082..63ffc24 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_01.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_02.ast
index 276327b..b3bc265 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_02.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_03.ast
index 97e108a..a9e003e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_04.ast
index ac83bfe..8590df4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ngram-jaccard_04.ast
@@ -34,14 +34,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_01.ast
index 2fc461b..910f280 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_02.ast
index b7d770b..098aa29 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_03.ast
index c66eff7..62dc98a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_04.ast
index a549e5c..33e9fbd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance-check_04.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_01.ast
index 411069f..3b1ea93 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_02.ast
index 7c532f6..3cd1f09 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_03.ast
index 60fdbaa..99bbca2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_04.ast
index 8a5c866..0da1ef2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-edit-distance_04.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
index 76e6457..947f617 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_02.ast
index 287fc22..24bb15c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_02.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_03.ast
index b59c140..7596217 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-edit-distance_03.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
index 3488a26..45bb5c1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_02.ast
index 47a518b..8bf6465 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_02.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_03.ast
index 78c5045..a34871e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-fuzzyeq-jaccard_03.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_01.ast
index f6cb9ea..a3dbc6a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_02.ast
index 1c24316..0692ab7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_03.ast
index b383e26..b7fe85f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_04.ast
index d7a11e2..be79a52 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard-check_04.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_01.ast
index 725f507..24979fd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_02.ast
index 2f234f4..bc4db0c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_03.ast
index 0364e99..84eb429 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_04.ast
index 75dd84f..bde593c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/olist-jaccard_04.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
index 94632b9..293ef6b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_02.ast
index 8720d11..3b38cb3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_02.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_03.ast
index 665765b..a1d0e23 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-fuzzyeq-jaccard_03.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_01.ast
index 6e64369..707a4d1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_02.ast
index ee76dc1..7516713 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_03.ast
index 6f527e4..0c0ceaf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_04.ast
index 738c754..799f0b6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard-check_04.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_01.ast
index bcc0f16..85613cc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_02.ast
index d3d730b..4f8bb6e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_03.ast
index 6b8c2d4..d27eea9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_03.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_04.ast
index 454bbfe..b33c06d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/ulist-jaccard_04.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_01.ast
index 9d46dff..8e2fe3e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_01.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_02.ast
index 6a51fda..d777a3f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_02.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_03.ast
index 8fa76a8..ffce373 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-fuzzyeq-jaccard_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check-after-btree-access.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check-after-btree-access.ast
index 2b5b7bd..5ae0380 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check-after-btree-access.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check-after-btree-access.ast
@@ -56,14 +56,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Let Variable [ Name=$sim ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_01.ast
index 6b6620d..b63bb53 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_02.ast
index 15dafb9..69fb395 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_03.ast
index c41a92a..fc17796 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_04.ast
index 25adf38..37a1be6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard-check_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_01.ast
index b21338c..d10b5c1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_02.ast
index eb556e9..1cc54d5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_03.ast
index e57a872..9181776 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_04.ast
index 7887423..7474208 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/inverted-index-join/word-jaccard_04.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_01.ast
index 2588fc5..38d457c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_01.ast
@@ -79,14 +79,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItems]
   ]
-  AS
-  Variable [ Name=$li ]
+  AS Variable [ Name=$li ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [PartSupp]
   ]
-  AS
-  Variable [ Name=$ps ]
+  AS Variable [ Name=$ps ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_02.ast
index 3982bb8..8f5548b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/join-super-key_02.ast
@@ -79,14 +79,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [PartSupp]
   ]
-  AS
-  Variable [ Name=$ps ]
+  AS Variable [ Name=$ps ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItems]
   ]
-  AS
-  Variable [ Name=$li ]
+  AS Variable [ Name=$li ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/limit-issue353.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/limit-issue353.ast
index e9f5897..5c92850 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/limit-issue353.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/limit-issue353.ast
@@ -53,8 +53,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Limit
   LiteralExpr [LONG] [2]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_01.ast
index 87eb3ae..c4230f9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_01.ast
@@ -81,8 +81,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItems]
   ]
-  AS
-  Variable [ Name=$li ]
+  AS Variable [ Name=$li ]
 ]
 Let Variable [ Name=$partsupp ]
   :=
@@ -93,8 +92,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [PartSupp]
       ]
-      AS
-      Variable [ Name=$ps ]
+      AS Variable [ Name=$ps ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_02.ast
index 79dbce4..d31fc63 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/loj-super-key_02.ast
@@ -81,8 +81,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [PartSupp]
   ]
-  AS
-  Variable [ Name=$ps ]
+  AS Variable [ Name=$ps ]
 ]
 Let Variable [ Name=$items ]
   :=
@@ -93,8 +92,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItems]
       ]
-      AS
-      Variable [ Name=$li ]
+      AS Variable [ Name=$li ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nest_aggregate.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nest_aggregate.ast
index 802eb04..951e744 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nest_aggregate.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nest_aggregate.ast
@@ -120,14 +120,12 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Orders]
         ]
-        AS
-        Variable [ Name=$orders ]
+        AS Variable [ Name=$orders ]
 ,
         FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$customer ]
+        AS Variable [ Name=$customer ]
       ]
       Where
         OperatorExpr [
@@ -162,17 +160,12 @@
           Variable [ Name=$orders ]
           Field=o_orderdate
         ]
-        GROUP AS
-        Variable [ Name=#1 ]
+        GROUP AS Variable [ Name=#1 ]
         (
-        Variable [ Name=$customer ]
-         AS customer
-        Variable [ Name=$orders ]
-         AS orders
-        Variable [ Name=$sn ]
-         AS sn
-        Variable [ Name=$nation ]
-         AS nation
+          customer:=Variable [ Name=$customer ]
+          orders:=Variable [ Name=$orders ]
+          sn:=Variable [ Name=$sn ]
+          nation:=Variable [ Name=$nation ]
         )
 
       Let Variable [ Name=$sum ]
@@ -186,8 +179,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -204,14 +196,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Nation]
   ]
-  AS
-  Variable [ Name=$nation ]
+  AS Variable [ Name=$nation ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [SelectedNation]
   ]
-  AS
-  Variable [ Name=$sn ]
+  AS Variable [ Name=$sn ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/disjunction-to-join.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/disjunction-to-join.ast
index 7a52b2d..070f91b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/disjunction-to-join.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/disjunction-to-join.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
index e864bcb..1223341 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01.ast
@@ -87,8 +87,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -125,8 +124,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
index 7563428..efe5154 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02.ast
@@ -87,8 +87,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -145,8 +144,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_01.ast
index 6c3ff58..ab8d56a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_01.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_02.ast
index 1146266..d9eb12d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_02.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_03.ast
index 4bd4682..c974456 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-join_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_01.ast
index 77da0f0..fbc638b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_01.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_02.ast
index 0ee1013..ce857c4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_02.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_03.ast
index 431c6e3..6d67f1a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_04.ast
index 6bdf652..6507a34 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_04.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_05.ast
index 3e65bf3..d621592 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_05.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_06.ast
index 3d74511..1853548 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-composite-key-prefix-join_06.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-multipred.ast
index ddd5a5a..203bb5d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-multipred.ast
@@ -66,14 +66,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-neg_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-neg_01.ast
index 61025af..a84fc8b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-neg_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join-neg_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_01.ast
index 6103921..f445f87 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_02.ast
index 08cf80e..4205530 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_02.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_03.ast
index 1964148..ed9b40b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_03.ast
@@ -66,14 +66,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_04.ast
index 6e7e1d4..b09ab56 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_04.ast
@@ -66,14 +66,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_05.ast
index 1ee2dd5..7f84df1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-equi-join_05.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c1 ]
+  AS Variable [ Name=$c1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c2 ]
+  AS Variable [ Name=$c2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-ge-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-ge-join_01.ast
index 0a02105..96cc827 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-ge-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-ge-join_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-gt-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-gt-join_01.ast
index d3fdb0a..63e50d2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-gt-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-gt-join_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-le-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-le-join_01.ast
index 0cd50a9..fca9b42 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-le-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-le-join_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-lt-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-lt-join_01.ast
index 77d36af..cf6fafa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-lt-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/primary-lt-join_01.ast
@@ -21,14 +21,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsOne]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.DsTwo]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multiindex.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multiindex.ast
index 46331ad..1cd2c14 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multiindex.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multiindex.ast
@@ -96,14 +96,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multipred.ast
index 38f9516..92a4c11 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join-multipred.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join_01.ast
index 19acac3..3245d74 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index-join/secondary-equi-join_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-01.ast
index eb6d290..bb6e09f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-01.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-02.ast
index e6bdae1..b9dd560 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-02.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-03.ast
index 7478680..0645497 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-03.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-04.ast
index 7b7c9ff..1aaeaa2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-04.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-05.ast
index c7a94fd..6c31abd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-05.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-06.ast
index c741b6a..3f6e7d0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-06.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-07.ast
index e62439a..7f0c74d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-07.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-08.ast
index 32c1d15..814f90d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-08.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-09.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-09.ast
index 249389f..67d07fb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-09.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-09.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-10.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-10.ast
index 83886ec..8d57254 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-10.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-10.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-11.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-11.ast
index 6fee41c..b284429 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-11.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-11.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-12.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-12.ast
index 05d7739..6a1d26c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-12.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-12.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-13.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-13.ast
index 23b3de3..d01636c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-13.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-13.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-14.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-14.ast
index cfa80b1..552fdfc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-14.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-14.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-15.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-15.ast
index 7e40c6c..9c2cbe0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-15.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-15.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-16.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-16.ast
index 1d39214..b913a84 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-16.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-16.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-17.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-17.ast
index 6fe0b15..16c6ece 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-17.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-17.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-18.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-18.ast
index abcad1b..82d3a6c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-18.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-18.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-19.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-19.ast
index eabd287..e0102ee 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-19.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-19.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-20.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-20.ast
index 86492ba..6d4840b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-20.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-20.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-21.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-21.ast
index 34023a6..30cefb2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-21.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-21.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-22.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-22.ast
index abc957f..b2a3420 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-22.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-22.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-23.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-23.ast
index ad4ead6..a5d3b08 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-23.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-23.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-24.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-24.ast
index c7ce593..243029f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-24.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-24.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-25.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-25.ast
index 92a315d..514367c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-25.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-25.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-26.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-26.ast
index 8ccd5b2..b1284cf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-26.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-26.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-27.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-27.ast
index 06e8188..d3eba3c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-27.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-27.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-28.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-28.ast
index f710e35..3371da9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-28.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-28.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-29.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-29.ast
index eedd0d1..c7e0cdd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-29.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-29.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-30.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-30.ast
index 3097f37..37be516 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-30.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-30.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-31.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-31.ast
index 3b420b2..38ae6d6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-31.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-31.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-32.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-32.ast
index c12a9d3..8e78d4b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-32.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-primary-32.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-33.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-33.ast
index 41653ee..d5c4bbd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-33.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-33.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-34.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-34.ast
index beb40bc..8f4fdbd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-34.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-34.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-35.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-35.ast
index b0b6f7c..8b54364 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-35.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-35.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-36.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-36.ast
index a1b0125..10bfc69 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-36.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-36.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-37.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-37.ast
index e47ad48..34ae249 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-37.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-37.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-38.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-38.ast
index 9fb769b..d050cfc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-38.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-38.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-39.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-39.ast
index 0548e38..6134318 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-39.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-39.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-40.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-40.ast
index 4d9e481..6d30883 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-40.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-40.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-41.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-41.ast
index 8895f4f..fe6abef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-41.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-41.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-42.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-42.ast
index 0a46fe4..45a31e8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-42.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-42.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-43.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-43.ast
index d56a20d..fa2b0bd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-43.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-43.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-44.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-44.ast
index 4a2e9a8..942a013 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-44.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-44.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-45.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-45.ast
index faa6df8..82513e6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-45.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-45.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-46.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-46.ast
index d730df6..d0585b3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-46.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-46.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-47.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-47.ast
index 62f7711..cd5a6bb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-47.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-47.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-48.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-48.ast
index 0b0f3fc..bb8cad1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-48.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-48.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-49.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-49.ast
index 6cc6478..45f2c32 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-49.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-49.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-50.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-50.ast
index 3b5ca90..a3f8a09 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-50.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-50.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-51.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-51.ast
index 724e948..a4c2c42 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-51.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-51.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-52.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-52.ast
index 5594a15..ee5f417 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-52.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-52.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-53.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-53.ast
index 91a3072..4370efe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-53.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-53.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-54.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-54.ast
index 0dde970..6640cea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-54.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-54.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-55.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-55.ast
index c939202..c556fb8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-55.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-55.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-56.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-56.ast
index f173658..af4e8ea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-56.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-56.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-57.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-57.ast
index 4397481..30c90ea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-57.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-57.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-58.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-58.ast
index c0ef98f..82b4680 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-58.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-58.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-59.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-59.ast
index 06fb34c..8f02f76 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-59.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-59.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-60.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-60.ast
index 8bb9cbe..511dafe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-60.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-60.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-61.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-61.ast
index afb7c7b..1e9187b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-61.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-61.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-62.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-62.ast
index d2de0a8..c5d661c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-62.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-62.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-63.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-63.ast
index ac470b4..45c808b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-63.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/btree-index/btree-secondary-63.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains-panic.ast
index 2a2447b..c900f95 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains-panic.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains.ast
index ea8456d..a14ce36 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-contains.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
index de58b35..a8fe892 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check.ast
index 7219ea6..3b85fdf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-check.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-panic.ast
index dec4a8c..e440296 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance-panic.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance.ast
index d9a978b..b3407d9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-edit-distance.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
index bdc2fbf..01701f9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
@@ -24,8 +24,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
index 9aec6f0..a9ae4c2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
@@ -25,8 +25,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard-check.ast
index 4494aa8..07e3a69 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard-check.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard.ast
index f0c7506..9bb7f9b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ngram-jaccard.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check-panic.ast
index 7cdc47f..1aff230 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check-panic.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check.ast
index 7e4626b..3bbac54 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-check.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-panic.ast
index 8f80b01..fb4293a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance-panic.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance.ast
index 83d0571..df3a328 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-edit-distance.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
index eef9997..ee70178 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-edit-distance.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-jaccard.ast
index ca89a6a..b5842f3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-fuzzyeq-jaccard.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard-check.ast
index fc7f74c..0474a62 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard-check.ast
@@ -36,8 +36,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard.ast
index 3985eea..a85f2ac 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/olist-jaccard.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
index 8d69835..b92a95f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-fuzzyeq-jaccard.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard-check.ast
index e0b48ba..c67381b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard-check.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard.ast
index f7501e4..16f1538 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/ulist-jaccard.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-contains.ast
index f0da7f6..e58f478 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-contains.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
index 2cd00d0..a20cb72 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
@@ -24,8 +24,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard-check.ast
index 1bbb4e1..9d57591 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard-check.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard.ast
index f69b698..34427ac 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-basic/word-jaccard.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
index 3274d55..9577e90 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$eda ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
index ba67f6c1..2fddf74 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$edb ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
index b4cf5a8..3bf5d3e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let.ast
index 690da4c..ffc049d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-let.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-substring.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
index 0e0ef6b..b6ceb69 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
@@ -45,8 +45,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
index 7e7436a..dc5b2da 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
@@ -45,8 +45,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -57,8 +56,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-let.ast
index eb504ee..8b834a0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-let.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
index 894bfdf..48e7479 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
@@ -34,8 +34,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let-panic.ast
index de2b1ee..1cd94f6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let-panic.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let.ast
index 8ca4b77..0f9a149 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-edit-distance-check-let.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-jaccard-check-let.ast
index 72bc93d..ad00f55 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/olist-jaccard-check-let.ast
@@ -36,8 +36,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ulist-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ulist-jaccard-check-let.ast
index c04b63d..4bf45d8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ulist-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/ulist-jaccard-check-let.ast
@@ -37,8 +37,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-let.ast
index 38c78e1..0ab7fd3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-let.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-multi-let.ast
index 163f016..6c0320b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-complex/word-jaccard-check-multi-let.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
index 62696f8..7055b2d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
@@ -93,8 +93,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -157,8 +156,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
index 2e47442..4f7aebe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-jaccard-check-idx_01.ast
@@ -93,8 +93,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -157,8 +156,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-check_01.ast
index 5ba5f32..59b498a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-contains.ast
index 37e8adf..73130cd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-contains.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-inline.ast
index 5a6ff28..cf1866b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance-inline.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance_01.ast
index d7ed172..3dc98f2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-edit-distance_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
index c4feb38..48b4e9a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
index 4dc9a32..db54c81 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-check_01.ast
index b698c0a..22c29a8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-check_01.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-inline.ast
index e516607..baf8a71 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard-inline.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard_01.ast
index 5ce3d57..1a25f2e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ngram-jaccard_01.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-check_01.ast
index c699f9a..d4cc0be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-inline.ast
index 07980e6..8e765f5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance-inline.ast
@@ -65,14 +65,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance_01.ast
index 9a7c3ab..f658772 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-edit-distance_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
index f441dfd..d33ae9f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-edit-distance_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
index 44af4b1..00bf242 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-fuzzyeq-jaccard_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-check_01.ast
index 78179ce..a2f20a5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-inline.ast
index 481a48f..132d299 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard-inline.ast
@@ -65,14 +65,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard_01.ast
index 4412aa0..1f9ce9e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/olist-jaccard_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
index e394989..da3cc7d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-fuzzyeq-jaccard_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-check_01.ast
index 53f66d9..1547fe2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-inline.ast
index dc4c405..4d229f5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard-inline.ast
@@ -65,14 +65,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard_01.ast
index bd7e024..cec52a9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/ulist-jaccard_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
index 2dad5cb..cc9568c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check-after-btree-access.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
index e8b4564..11e931f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
@@ -67,14 +67,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Let Variable [ Name=$sim ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check_01.ast
index 7f05b15..bc4dbe1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-inline.ast
index e33d74d..6a553a9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard-inline.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard_01.ast
index 51acd74..e997a8f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/inverted-index-join/word-jaccard_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
index 76b9fe4..cba7d62 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
@@ -87,8 +87,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -115,8 +114,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
index 0e1f873..0627f9e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
@@ -87,8 +87,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -138,8 +137,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_01.ast
index 6aa939e..23c9f97 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_02.ast
index 9db17c9..5dca6be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_03.ast
index 3ddad6e..7761734 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-index/rtree-index-join/spatial-intersect-point_03.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/disjunction-to-join.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/disjunction-to-join.ast
index d24e5ac..3055c2d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/disjunction-to-join.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/disjunction-to-join.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
index 34bd59c..7ff16fb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
@@ -86,8 +86,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -124,8 +123,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
index be7c075..a383bff 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
@@ -85,8 +85,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -123,8 +122,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
index b74cb45..75d429f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
@@ -86,8 +86,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -144,8 +143,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
index a077d25..512b788 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
@@ -85,8 +85,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -143,8 +142,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_01.ast
index a2a5032..ea4f64f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_01.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_02.ast
index 48340af..e187262 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_02.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_03.ast
index aeb32e4..a524ca4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-join_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_01.ast
index 7938842..71c64e6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_01.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_02.ast
index 123b788..80edcb3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_02.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_03.ast
index f09ca2c..04cd1f0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_04.ast
index 53b226f..8823793 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_04.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_05.ast
index 2c06658..24487e1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_05.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_06.ast
index 51d28ce..620f8a0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-composite-key-prefix-join_06.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multiindex.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multiindex.ast
index 11c4bf2..0554585 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multiindex.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multiindex.ast
@@ -95,14 +95,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multipred.ast
index 11de0a8..7b01567 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join-multipred.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_01.ast
index 9968af1..010102a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_01.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_02.ast
index 9bd1222..ef62d1c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_02.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_03.ast
index f65b690..472c556 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_03.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_04.ast
index 1150ccc..d4f3e2b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_04.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a2 ]
+  AS Variable [ Name=$a2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_05.ast
index da298cc..a0f42ba 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index-join/secondary-equi-join_05.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-33.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-33.ast
index 24af576..7d47122 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-33.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-33.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-34.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-34.ast
index 3930fd6..edf9fbe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-34.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-34.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-35.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-35.ast
index b674574..8c74360 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-35.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-35.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-36.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-36.ast
index 92a28cc..6fbbf03 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-36.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-36.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-37.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-37.ast
index 250ad1e..671fec9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-37.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-37.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-38.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-38.ast
index a7108e0..ba3e2b6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-38.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-38.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-39.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-39.ast
index cb1774e..4ceee68 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-39.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-39.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-40.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-40.ast
index 92971eb..5f10647 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-40.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-40.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-41.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-41.ast
index 7906d28..78d848c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-41.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-41.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-42.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-42.ast
index 922645d..e75e9fc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-42.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-42.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-43.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-43.ast
index 06ae9d0..5e51dcc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-43.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-43.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-44.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-44.ast
index 4a49cb2..6187877 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-44.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-44.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-45.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-45.ast
index 316459e..21ab19f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-45.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-45.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-46.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-46.ast
index 9525790..fb05581 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-46.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-46.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-47.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-47.ast
index 17ecdff..2b94b4f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-47.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-47.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-48.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-48.ast
index 5158032..0ef3e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-48.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-48.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-49.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-49.ast
index 64d6ccd..fa28872 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-49.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-49.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-50.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-50.ast
index 5fe76e0..242a7cf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-50.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-50.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-51.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-51.ast
index da19614..524cff3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-51.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-51.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-52.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-52.ast
index 4a1d2d8..ce33027 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-52.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-52.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-53.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-53.ast
index 397de9a..cb8e719 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-53.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-53.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-54.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-54.ast
index 54ef7c8..3bafe9f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-54.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-54.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-55.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-55.ast
index 37c3193..d81f7aa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-55.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-55.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-56.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-56.ast
index 658a2e7..f47cbd6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-56.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-56.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-57.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-57.ast
index bb40c7c..80d5295 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-57.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-57.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-58.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-58.ast
index 07be18c..c559945 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-58.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-58.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-59.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-59.ast
index 1299c17..02e5065 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-59.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-59.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-60.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-60.ast
index d237003..c52089e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-60.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-60.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-61.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-61.ast
index 9d7a3b3..45ea9d0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-61.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-61.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-62.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-62.ast
index e68bb37..1e12679 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-62.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-62.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-63.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-63.ast
index 60cabc1..2b8aef7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-63.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/btree-index/btree-secondary-63.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains-panic.ast
index 9e7aed0..9b8cd6d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains-panic.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains.ast
index 60162e9..5a8342b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-contains.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
index 6b0f81e..beefcb1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check-panic.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check.ast
index 89b8dcc..30aad36 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-check.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-panic.ast
index bfdea24..1a82321 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance-panic.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance.ast
index d629746..a3c9fe4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-edit-distance.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
index fcad98a..8c83caf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
index b059b1d..d5f40c3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
@@ -24,8 +24,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard-check.ast
index 9055050..264dad7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard-check.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard.ast
index 82a72f9..f2bb773 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/ngram-jaccard.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-contains.ast
index 0c425ac..9c875de 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-contains.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
index 8bfedca..a1f7578 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-fuzzyeq-jaccard.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard-check.ast
index e370ef4..3cf7c2c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard-check.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard.ast
index 3e080c5..607fc89 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-basic/word-jaccard.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
index 7ff7fa8..14a4945 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$eda ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
index 98fd444..76dacbe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$edb ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
index 9354f98..aa3f26a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let.ast
index 1da2986..c126153 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-let.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-substring.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
index b9bae08..93d293a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-substring.ast
@@ -44,8 +44,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
index fcc11b3..a307519 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
@@ -44,8 +44,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -56,8 +55,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-let.ast
index 3875cd8..3ff4d81 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-let.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
index db83edf..5b6b065 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/ngram-jaccard-check-multi-let.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-let.ast
index 0132430..8f852b2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-let.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-multi-let.ast
index 55c28e7..1451a85 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-complex/word-jaccard-check-multi-let.ast
@@ -32,8 +32,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
index 10b23d7..3567413 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
@@ -92,8 +92,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -156,8 +155,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_01.ast
index fb0a906..521f510 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_01.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_02.ast
index 4df1127..b9dce43 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_02.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_03.ast
index a836da0..670eca1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_03.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_04.ast
index 42281a1..e6b810e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-contains_04.ast
@@ -41,14 +41,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_01.ast
index 8e3ad38..c065c22 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_01.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_02.ast
index 2429f49..210dbcd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_02.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_03.ast
index c7665cc..5ff701b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_04.ast
index 1ceb471..8736daf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_04.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_05.ast
index 1ceb471..8736daf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-check_05.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-contains.ast
index d4e3350..d8f49be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-contains.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-inline.ast
index 09f2572..b21ed80 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance-inline.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_01.ast
index 940f918..7e52fea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_01.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_02.ast
index 5e5f175..d8bbcae 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_02.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_03.ast
index c2fca7f..a0b4ecd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_04.ast
index b33f72b..d1113ca 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_04.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_05.ast
index b33f72b..d1113ca 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-edit-distance_05.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
index 3ae061f..00a1150 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
index 855d1f0..73d44ec 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
index 0ba9b96..5b74a1b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
@@ -34,14 +34,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
index 77c3912..5113bbe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
index 77c3912..5113bbe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
index a3e07df..c48c3d1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
index 0515157..1a41722 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
index 02de029..d68d9de 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
@@ -35,14 +35,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
index 43ce4fd..6dfb496 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_01.ast
index 8479adc..4c049c3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_02.ast
index 3a0af2b..3810d56 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_02.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_03.ast
index ba335fc..62050ca 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_03.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_04.ast
index 546f130..1884ed6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-check_04.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-inline.ast
index 38a5907..a41bbd0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard-inline.ast
@@ -50,14 +50,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_01.ast
index f43dedb..ae3c2cb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_01.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_02.ast
index 89114ec..38ce601 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_02.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_03.ast
index 8fa79f3..1420456 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_03.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_04.ast
index 03cb954..be8fac5 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/ngram-jaccard_04.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
index d686415..e927313 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_01.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_02.ast
index 036d136..19dad48 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_02.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_03.ast
index 868b838..afeda0a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_03.ast
@@ -34,14 +34,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_04.ast
index 8228647..e4cf01a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-fuzzyeq-jaccard_04.ast
@@ -48,14 +48,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check-after-btree-access.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
index c7ddb54..9175934 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check-after-btree-access.ast
@@ -66,14 +66,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Let Variable [ Name=$sim ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_01.ast
index 84cffe8..2162fc1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_01.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_02.ast
index 398bdd5..43266aa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_02.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_03.ast
index 50df581..ca94210 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_04.ast
index 327d750..1b699b8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-check_04.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-inline.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-inline.ast
index b7f45d7..465564e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-inline.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard-inline.ast
@@ -49,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_01.ast
index b5d8f53..6cb7724 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_01.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_02.ast
index c1ecf1a..1c0ed4d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_02.ast
@@ -47,14 +47,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_03.ast
index a953fdd..407fa99 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_04.ast
index 483b580..200c66d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/inverted-index-join/word-jaccard_04.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
index 8e51c71..2f00aa9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
@@ -86,8 +86,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -114,8 +113,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
index 5ec7f58..8154380 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
@@ -86,8 +86,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -137,8 +136,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_01.ast
index 6aa939e..23c9f97 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_02.ast
index 9db17c9..5dca6be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_03.ast
index 3ddad6e..7761734 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_03.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_04.ast
index b83cd3f..da9f7c3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_05.ast
index b83cd3f..da9f7c3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested-open-index/rtree-index-join/spatial-intersect-point_05.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj2.ast
index 6864f31..72a12da 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj2.ast
@@ -66,8 +66,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$orders ]
   :=
@@ -89,8 +88,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
     ]
     Let Variable [ Name=$items ]
       :=
@@ -101,8 +99,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItems]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Where
           OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj3.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj3.ast
index 4920f71..0a88da9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj3.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/nested_loj3.ast
@@ -76,8 +76,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$orders ]
   :=
@@ -99,8 +98,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
     ]
     Let Variable [ Name=$items ]
       :=
@@ -122,8 +120,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItems]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Let Variable [ Name=$partsupp ]
           :=
@@ -134,8 +131,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [PartSupp]
               ]
-              AS
-              Variable [ Name=$ps ]
+              AS Variable [ Name=$ps ]
             ]
             Where
               OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/disjunction-to-join.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/disjunction-to-join.ast
index 6444609..d1e9759 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/disjunction-to-join.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/disjunction-to-join.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
index 676e410..b6936ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_1.ast
@@ -69,8 +69,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -98,8 +97,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
index a98d6c6..71e8849 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_01_2.ast
@@ -68,8 +68,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -97,8 +96,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
index aeddf34..f97de87 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_1.ast
@@ -69,8 +69,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -112,8 +111,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
index 949bc95..75b47b2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/leftouterjoin-probe-pidx-with-join-btree-sidx_02_2.ast
@@ -68,8 +68,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -111,8 +110,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_01.ast
index aa21221..6906dea 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_01.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_02.ast
index f2d72fd..c4f2627 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_02.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_03.ast
index a0013b3..0e992fb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-join_03.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_01.ast
index 435e232..7683e43 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_01.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_02.ast
index 3436d26..5a798b4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_02.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_03.ast
index 5ffc7d0..1f289e3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_03.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_04.ast
index a8b9222..46864d7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_04.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_05.ast
index bf2e615..c67c8cd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_05.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_06.ast
index c5e7691..9e8fb0c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-composite-key-prefix-join_06.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp1 ]
+  AS Variable [ Name=$emp1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Names]
   ]
-  AS
-  Variable [ Name=$emp2 ]
+  AS Variable [ Name=$emp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multiindex.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multiindex.ast
index 0b210cb..67eb1f4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multiindex.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multiindex.ast
@@ -73,14 +73,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multipred.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multipred.ast
index 2290bb0..b2eeffb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multipred.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join-multipred.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_01.ast
index 9549946..78b416a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_02.ast
index 2e3e53a..bfdff972 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_03.ast
index ca97be0..5e675be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_03.ast
@@ -27,14 +27,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_04.ast
index f19a41e..fc5c334 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_05.ast
index f19a41e..fc5c334 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index-join/secondary-equi-join_05.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-33.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-33.ast
index 1927dc8..5efb000 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-33.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-33.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-34.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-34.ast
index 8e5f71f..9fbba7b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-34.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-34.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-35.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-35.ast
index 87f8f43..23ea757 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-35.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-35.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-36.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-36.ast
index 628c58d..a307976 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-36.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-36.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-37.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-37.ast
index 7969e13..d2d2bfd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-37.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-37.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-38.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-38.ast
index 57881a5..e0bdcad 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-38.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-38.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-39.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-39.ast
index 09ee7bc..ddae1fc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-39.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-39.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-40.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-40.ast
index 3cb506d..53142c2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-40.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-40.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-41.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-41.ast
index 71b8263..9dab843 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-41.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-41.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-42.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-42.ast
index f32a2f3..f4b0a21 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-42.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-42.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-43.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-43.ast
index c9eb315..9450047 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-43.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-43.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-44.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-44.ast
index d9f0d50..80b6ed2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-44.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-44.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-45.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-45.ast
index 4ba35bc..cfcf0ff 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-45.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-45.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-46.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-46.ast
index bd41a0b..d70b77e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-46.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-46.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-47.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-47.ast
index ae0ef7a..0f5522f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-47.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-47.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-48.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-48.ast
index ede6359..899a8bd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-48.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-48.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-49.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-49.ast
index a45a7b8..59fc23f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-49.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-49.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-50.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-50.ast
index ae85df2..102872e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-50.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-50.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-51.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-51.ast
index 3259f08..c78d1a7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-51.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-51.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-52.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-52.ast
index 461ace3..d315bca 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-52.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-52.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-53.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-53.ast
index 6fe1c53..3c68c96 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-53.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-53.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-54.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-54.ast
index fd1385d..67a9fa1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-54.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-54.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-55.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-55.ast
index f826ec0..c562a35 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-55.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-55.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-56.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-56.ast
index c18e798..5edb012 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-56.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-56.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-57.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-57.ast
index b4d8a4b..610249b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-57.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-57.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-58.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-58.ast
index 61d7e19..f313fa7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-58.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-58.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-59.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-59.ast
index 89b635f..29d2ad8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-59.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-59.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-60.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-60.ast
index 51aade1..43f3d1e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-60.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-60.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-61.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-61.ast
index 23f7c3e..0d68543 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-61.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-61.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-62.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-62.ast
index af866d8f7..3df0fb0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-62.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-62.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-63.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-63.ast
index 7c033ff..af81014 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-63.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/btree-index/btree-secondary-63.ast
@@ -13,8 +13,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains-panic.ast
index 9fce7e9..9292a1a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains-panic.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains.ast
index 8717cd8..9a8a0de 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-contains.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check-panic.ast
index ef92b67..66c3b07 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check-panic.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check.ast
index dbe99f8..bf08761 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-check.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-panic.ast
index 8a68f37..e8f9179 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance-panic.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance.ast
index e06550e..fb667a1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-edit-distance.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
index cc4dd19..fa5f5fe 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-edit-distance.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
index f261627..307055c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-fuzzyeq-jaccard.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard-check.ast
index 421e18f..ca31b15 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard-check.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard.ast
index b8fdf89..725962f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/ngram-jaccard.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-contains.ast
index 47abd72..9f960eb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-contains.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-fuzzyeq-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-fuzzyeq-jaccard.ast
index 875d090..472cd7f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-fuzzyeq-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-fuzzyeq-jaccard.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard-check.ast
index c1c70c0..7d27e43 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard-check.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard.ast
index 67cf511..b4a1d64 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-basic/word-jaccard.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
index fdb3756..b32f090 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_01.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$eda ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
index 8c6e725..d947e66 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic-nopanic_02.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$edb ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
index e273b6c..b768999 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let-panic.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let.ast
index 988b924..f1b8393 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-let.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-substring.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-substring.ast
index b11af23..307a1e4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-substring.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-substring.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
index d6e60b8..9fe2be3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-edit-distance-check-word-tokens.ast
@@ -33,8 +33,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -42,8 +41,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-let.ast
index 1ea8a57..5724b68 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-let.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-multi-let.ast
index 2bb8ae2..3848c08 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/ngram-jaccard-check-multi-let.ast
@@ -28,8 +28,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-let.ast
index 9e3ffd6..3055c5d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-let.ast
@@ -16,8 +16,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-multi-let.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-multi-let.ast
index 2195633..7bbb066 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-multi-let.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-complex/word-jaccard-check-multi-let.ast
@@ -27,8 +27,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
index 4decbcf..b8b27b3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/leftouterjoin-probe-pidx-with-join-edit-distance-check-idx_01.ast
@@ -75,8 +75,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -124,8 +123,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_01.ast
index fb0a906..521f510 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_01.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_02.ast
index e1907ec..e3d355c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_02.ast
@@ -42,14 +42,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_03.ast
index a836da0..670eca1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_03.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_04.ast
index 42281a1..e6b810e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-contains_04.ast
@@ -41,14 +41,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_01.ast
index 3c5feeb..62fe9ef 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_02.ast
index de05bf0..1485a97 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_03.ast
index ff136b2..ef4be6c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_03.ast
@@ -27,14 +27,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_04.ast
index 219e048..4919e2b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_05.ast
index 219e048..4919e2b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_05.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_inline_03.ast
index 8e71586..ed41664 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-check_inline_03.ast
@@ -35,14 +35,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-contains.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-contains.ast
index 919ba68..e60ccde 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-contains.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance-contains.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_01.ast
index be87f37..b6459c2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_02.ast
index af9b9ef..5450068 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_03.ast
index e76d8dd..e6b4e7a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_03.ast
@@ -27,14 +27,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_04.ast
index 43f5e80..6faa10b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_05.ast
index 43f5e80..6faa10b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_05.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_inline_03.ast
index 8d5e71f..66defd4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-edit-distance_inline_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
index dd72303..4132835 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_01.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
index d1fbdf9..8e0c421 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_02.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
index 37f51d6..da82a34 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
index c8716bf..cd13ec4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_04.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
index c8716bf..cd13ec4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-edit-distance_05.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
index 2d6408f..f7c5b24 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_01.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
index 4f086b3..fe21703 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_02.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
index 44134d6..4ac2fdd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
index 502deb9..6ded678 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-fuzzyeq-jaccard_04.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_01.ast
index d983a09..5cd18a9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_02.ast
index 26d0cca..350b374 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_03.ast
index 021ac4d..e66eb56 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_04.ast
index f9aa024..5d5a853 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_04.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_inline_03.ast
index cfe55f3..f704f9e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard-check_inline_03.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_01.ast
index d287581..0d2b444 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_01.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_02.ast
index 423fa95..ee2e336 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_02.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_03.ast
index 9a5b13d..4b297e1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_03.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_04.ast
index eb3854e..e630757 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_04.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_inline_03.ast
index cbdbe18..b244ffb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/ngram-jaccard_inline_03.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_01.ast
index 22bb3f5..0e58695 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_01.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_02.ast
index d0372f91..407bcf7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_02.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_03.ast
index 1ca2f30..b25b620 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_03.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_04.ast
index d02fe3f..627ccae 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-fuzzyeq-jaccard_04.ast
@@ -38,14 +38,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check-after-btree-access.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check-after-btree-access.ast
index 40affc1..f547643 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check-after-btree-access.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check-after-btree-access.ast
@@ -55,14 +55,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Let Variable [ Name=$sim ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_01.ast
index bf554dd..293612b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_02.ast
index eea0cc7..f66ffa7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_03.ast
index da4db64..0d50b5d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_03.ast
@@ -27,14 +27,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_04.ast
index dba70e2..1220f3f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_inline_03.ast
index 2c1b84d..9c9fff8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard-check_inline_03.ast
@@ -35,14 +35,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_01.ast
index 2c603af..16fad9b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_01.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_02.ast
index 38e2909..7442f5c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_02.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_03.ast
index 764bafa..39aab29 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_03.ast
@@ -27,14 +27,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_04.ast
index 7bdfb3c..ea7d4cd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_04.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_inline_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_inline_03.ast
index f11b74c..5d3058e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_inline_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/inverted-index-join/word-jaccard_inline_03.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
index bc0c4b4..eaf0b26 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
@@ -69,8 +69,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -94,8 +93,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
index 8715603..3bc4067 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
@@ -69,8 +69,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -108,8 +107,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_01.ast
index e5b4056..5ca33b1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_01.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_02.ast
index e97c1e5..b98868a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_02.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_03.ast
index 1119266..a05ea27 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_03.ast
@@ -30,14 +30,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_04.ast
index 955bf16..edf9f3c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_04.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_05.ast
index 955bf16..edf9f3c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/open-index-enforced/rtree-index-join/spatial-intersect-point_05.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orderby-desc-using-gby.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orderby-desc-using-gby.ast
index 427b83b..8de7e6f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orderby-desc-using-gby.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orderby-desc-using-gby.ast
@@ -41,8 +41,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Groupby
   Variable [ Name=$name ]
@@ -51,11 +50,9 @@
     Variable [ Name=$c ]
     Field=name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$c ]
-   AS c
+    c:=Variable [ Name=$c ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-aggreg.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-aggreg.ast
index 2494cbc..3f1faf2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-aggreg.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-aggreg.ast
@@ -31,8 +31,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -49,8 +48,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -67,8 +65,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -78,8 +75,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Groupby
   Variable [ Name=$cid ]
@@ -88,10 +84,8 @@
     Variable [ Name=$o ]
     Field=cid
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o ]
-   AS o
+    o:=Variable [ Name=$o ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-composite-index-search.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-composite-index-search.ast
index a74c45c..964efa8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-composite-index-search.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-composite-index-search.ast
@@ -46,8 +46,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_01.ast
index 1142ebc..db63af0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_01.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_02.ast
index 06dd552..1d0084f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive-open_02.ast
@@ -46,8 +46,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_01.ast
index 91cb4da..9b910fc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_01.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_02.ast
index 8eaa989..006cc86 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-conjunctive_02.ast
@@ -46,8 +46,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-open.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-open.ast
index 04a11b5..eb2a419 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-open.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search-open.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search.ast
index 995cd6e..a76d6eb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/orders-index-search.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search-open.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search-open.ast
index eca2c7d..22a1c0a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search-open.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search-open.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search.ast
index 81fd86b..815b2f1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/prim-idx-search.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/pull_select_above_eq_join.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/pull_select_above_eq_join.ast
index ba71f97..c0010bf 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/pull_select_above_eq_join.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/pull_select_above_eq_join.ast
@@ -44,14 +44,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Users]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Visitors]
   ]
-  AS
-  Variable [ Name=$visitor ]
+  AS Variable [ Name=$visitor ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push-project-through-group.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push-project-through-group.ast
index e2ad00e..239c3ff 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push-project-through-group.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push-project-through-group.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$matches ]
   :=
@@ -46,8 +45,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paper ]
+      AS Variable [ Name=$paper ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push_limit.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push_limit.ast
index 9d04a0c..d4b596b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push_limit.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/push_limit.ast
@@ -38,8 +38,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q01_pricing_summary_report_nt.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q01_pricing_summary_report_nt.ast
index 1a4fc42..1a91b41 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q01_pricing_summary_report_nt.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q01_pricing_summary_report_nt.ast
@@ -46,8 +46,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -64,8 +63,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -93,8 +91,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -131,8 +128,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -149,8 +145,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -167,8 +162,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -185,8 +179,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -203,8 +196,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -214,8 +206,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -239,11 +230,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q03_shipping_priority.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q03_shipping_priority.ast
index ed3f76e..2a34cb7 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q03_shipping_priority.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q03_shipping_priority.ast
@@ -76,20 +76,17 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItems]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -167,15 +164,11 @@
     Variable [ Name=$o ]
     Field=o_shippriority
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -200,8 +193,7 @@
       ]
       ]
       FROM [        Variable [ Name=$l ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q05_local_supplier_volume.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q05_local_supplier_volume.ast
index 2b8e44b..f913928 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q05_local_supplier_volume.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q05_local_supplier_volume.ast
@@ -95,8 +95,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   (
     SELECT ELEMENT [
@@ -146,8 +145,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -197,8 +195,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItems]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -232,8 +229,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Suppliers]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -259,14 +255,12 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Nations]
                   ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Regions]
                   ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
                 ]
                 Where
                   OperatorExpr [
@@ -292,8 +286,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$n1 ]
+              AS Variable [ Name=$n1 ]
             ]
             Where
               OperatorExpr [
@@ -308,8 +301,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$s1 ]
+          AS Variable [ Name=$s1 ]
         ]
         Where
           OperatorExpr [
@@ -324,8 +316,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l1 ]
+      AS Variable [ Name=$l1 ]
     ]
     Where
       OperatorExpr [
@@ -360,8 +351,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ]
 Where
   OperatorExpr [
@@ -396,13 +386,10 @@
     Variable [ Name=$o1 ]
     Field=n_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o1 ]
-   AS o1
-  Variable [ Name=$c ]
-   AS c
+    o1:=Variable [ Name=$o1 ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -427,8 +414,7 @@
       ]
       ]
       FROM [        Variable [ Name=$o1 ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q08_group_by.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q08_group_by.ast
index 0045b3e..38a3add 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q08_group_by.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q08_group_by.ast
@@ -138,8 +138,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Supplier]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   (
     SELECT ELEMENT [
@@ -226,8 +225,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -253,8 +251,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Orders]
               ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
 ,
               (
                 SELECT ELEMENT [
@@ -272,8 +269,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Customer]
                   ]
-                  AS
-                  Variable [ Name=$c ]
+                  AS Variable [ Name=$c ]
 ,
                   (
                     SELECT ELEMENT [
@@ -291,14 +287,12 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Nation]
                       ]
-                      AS
-                      Variable [ Name=$n1 ]
+                      AS Variable [ Name=$n1 ]
 ,
                       FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Region]
                       ]
-                      AS
-                      Variable [ Name=$r1 ]
+                      AS Variable [ Name=$r1 ]
                     ]
                     Where
                       OperatorExpr [
@@ -324,8 +318,7 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$nr ]
+                  AS Variable [ Name=$nr ]
                 ]
                 Where
                   OperatorExpr [
@@ -340,8 +333,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$nrc ]
+              AS Variable [ Name=$nrc ]
             ]
             Where
               OperatorExpr [
@@ -356,8 +348,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$nrco ]
+          AS Variable [ Name=$nrco ]
         ]
         Where
           OperatorExpr [
@@ -392,14 +383,12 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$lnrco ]
+      AS Variable [ Name=$lnrco ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Part]
       ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
     ]
     Where
       OperatorExpr [
@@ -425,8 +414,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$lnrcop ]
+  AS Variable [ Name=$lnrcop ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q09_group_by.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q09_group_by.ast
index 7e19e44..4c3349b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q09_group_by.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q09_group_by.ast
@@ -156,8 +156,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Part]
   ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ,
   (
     SELECT ELEMENT [
@@ -223,8 +222,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Partsupp]
       ]
-      AS
-      Variable [ Name=$ps ]
+      AS Variable [ Name=$ps ]
 ,
       (
         SELECT ELEMENT [
@@ -311,14 +309,12 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Supplier]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Nation]
               ]
-              AS
-              Variable [ Name=$n ]
+              AS Variable [ Name=$n ]
             ]
             Where
               OperatorExpr [
@@ -333,14 +329,12 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$s1 ]
+          AS Variable [ Name=$s1 ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Where
           OperatorExpr [
@@ -355,8 +349,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l1 ]
+      AS Variable [ Name=$l1 ]
     ]
     Where
       OperatorExpr [
@@ -385,8 +378,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$l2 ]
+  AS Variable [ Name=$l2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q1.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q1.ast
index 9a32c3d..899be1a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q1.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q1.ast
@@ -41,8 +41,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q2.ast
index 6f4cf7a..6a4815e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/q2.ast
@@ -54,15 +54,13 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Event]
   ]
-  AS
-  Variable [ Name=$event ]
+  AS Variable [ Name=$event ]
 ,
   FieldAccessor [
     Variable [ Name=$event ]
     Field=sponsoring_sigs
   ]
-  AS
-  Variable [ Name=$sponsor ]
+  AS Variable [ Name=$sponsor ]
 ]
 Let Variable [ Name=$es ]
   :=
@@ -85,15 +83,11 @@
     Variable [ Name=$sponsor ]
     Field=sig_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$es ]
-   AS es
-  Variable [ Name=$sponsor ]
-   AS sponsor
-  Variable [ Name=$event ]
-   AS event
+    es:=Variable [ Name=$es ]
+    sponsor:=Variable [ Name=$sponsor ]
+    event:=Variable [ Name=$event ]
   )
 
 Let Variable [ Name=$sig_sponsorship_count ]
@@ -107,8 +101,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
@@ -134,8 +127,7 @@
             ]
             ]
             FROM [              Variable [ Name=#3 ]
-              AS
-              Variable [ Name=#4 ]
+              AS Variable [ Name=#4 ]
             ]
           )
         ]
@@ -143,8 +135,7 @@
     ]
     ]
     FROM [      Variable [ Name=$es ]
-      AS
-      Variable [ Name=$e ]
+      AS Variable [ Name=$e ]
     ]
     Groupby
       Variable [ Name=$chapter_name ]
@@ -156,23 +147,15 @@
         ]
         Field=chapter_name
       ]
-      GROUP AS
-      Variable [ Name=#3 ]
+      GROUP AS Variable [ Name=#3 ]
       (
-      Variable [ Name=$e ]
-       AS e
-      Variable [ Name=$sig_sponsorship_count ]
-       AS sig_sponsorship_count
-      Variable [ Name=$es ]
-       AS es
-      Variable [ Name=$event ]
-       AS event
-      Variable [ Name=$sponsor ]
-       AS sponsor
-      Variable [ Name=$sig_name ]
-       AS sig_name
-      Variable [ Name=#1 ]
-       AS #1
+        e:=Variable [ Name=$e ]
+        sig_sponsorship_count:=Variable [ Name=$sig_sponsorship_count ]
+        es:=Variable [ Name=$es ]
+        event:=Variable [ Name=$event ]
+        sponsor:=Variable [ Name=$sponsor ]
+        sig_name:=Variable [ Name=$sig_name ]
+        #1:=Variable [ Name=#1 ]
       )
 
   )
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue550.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue550.ast
index 7cf52e9..f8988ad 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue550.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue550.ast
@@ -162,16 +162,14 @@
       Variable [ Name=$srec ]
       ]
       FROM [        Variable [ Name=$s ]
-        AS
-        Variable [ Name=$srec ]
+        AS Variable [ Name=$srec ]
       ]
     )
   )
 ]
 ]
 FROM [  Variable [ Name=$sample ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ]
 Groupby
   Variable [ Name=$u ]
@@ -180,12 +178,9 @@
     Variable [ Name=$s ]
     Field=uid
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$s ]
-   AS s
-  Variable [ Name=$sample ]
-   AS sample
+    s:=Variable [ Name=$s ]
+    sample:=Variable [ Name=$sample ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue562.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue562.ast
index 65d7c96..4025ed0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue562.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue562.ast
@@ -74,8 +74,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Customer ]
-      AS
-      Variable [ Name=$c ]
+      AS Variable [ Name=$c ]
     ]
     Let Variable [ Name=$phone_substr ]
       :=
@@ -148,8 +147,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$c ]
+        AS Variable [ Name=$c ]
       ]
       Let Variable [ Name=$phone_substr ]
         :=
@@ -237,8 +235,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -255,8 +252,7 @@
         ]
         ]
         FROM [          Variable [ Name=$ct ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -265,8 +261,7 @@
 ]
 FROM [  FunctionCall tpch.q22_customer_tmp@0[
   ]
-  AS
-  Variable [ Name=$ct ]
+  AS Variable [ Name=$ct ]
 ]
 Where
   OperatorExpr [
@@ -278,8 +273,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
         ]
         Where
           OperatorExpr [
@@ -305,13 +299,10 @@
     Variable [ Name=$ct ]
     Field=cntrycode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$ct ]
-   AS ct
-  Variable [ Name=$avg ]
-   AS avg
+    ct:=Variable [ Name=$ct ]
+    avg:=Variable [ Name=$avg ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue601.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue601.ast
index 92954c3..7a0ad61 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue601.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue601.ast
@@ -40,8 +40,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -51,8 +50,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Groupby
   Variable [ Name=$l_linenumber ]
@@ -61,10 +59,8 @@
     Variable [ Name=$l ]
     Field=l_linenumber
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue697.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue697.ast
index 6d9ed62..4826e62 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue697.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue697.ast
@@ -26,8 +26,7 @@
         ]
         ]
         FROM [          Variable [ Name=$i ]
-          AS
-          Variable [ Name=$j ]
+          AS Variable [ Name=$j ]
         ]
         Where
           FunctionCall test.not@1[
@@ -46,8 +45,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$aid ]
@@ -56,10 +54,8 @@
     Variable [ Name=$i ]
     Field=key1
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue785.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue785.ast
index b639cfa..31d5bbc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue785.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue785.ast
@@ -83,14 +83,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$nation ]
+      AS Variable [ Name=$nation ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [SelectedNation]
       ]
-      AS
-      Variable [ Name=$sn ]
+      AS Variable [ Name=$sn ]
     ]
     Where
       OperatorExpr [
@@ -128,20 +126,17 @@
     ]
     ]
     FROM [      Variable [ Name=$t ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customer]
       ]
-      AS
-      Variable [ Name=$customer ]
+      AS Variable [ Name=$customer ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$orders ]
+      AS Variable [ Name=$orders ]
     ]
     Where
       OperatorExpr [
@@ -182,17 +177,12 @@
         Variable [ Name=$n ]
         Field=n_nationkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$orders ]
-       AS orders
-      Variable [ Name=$customer ]
-       AS customer
-      Variable [ Name=$n ]
-       AS n
-      Variable [ Name=$t ]
-       AS t
+        orders:=Variable [ Name=$orders ]
+        customer:=Variable [ Name=$customer ]
+        n:=Variable [ Name=$n ]
+        t:=Variable [ Name=$t ]
       )
 
     Let Variable [ Name=$sum ]
@@ -206,8 +196,7 @@
           ]
           ]
           FROM [            Variable [ Name=$orders ]
-            AS
-            Variable [ Name=$o ]
+            AS Variable [ Name=$o ]
           ]
         )
       ]
@@ -244,8 +233,7 @@
       ]
       ]
       FROM [        Variable [ Name=$x ]
-        AS
-        Variable [ Name=$y ]
+        AS Variable [ Name=$y ]
       ]
       Orderby
         FieldAccessor [
@@ -261,8 +249,7 @@
 ]
 ]
 FROM [  Variable [ Name=$X ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Groupby
   Variable [ Name=$nation_key ]
@@ -271,14 +258,10 @@
     Variable [ Name=$x ]
     Field=nation_key
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$x ]
-   AS x
-  Variable [ Name=$X ]
-   AS X
-  Variable [ Name=$t ]
-   AS t
+    x:=Variable [ Name=$x ]
+    X:=Variable [ Name=$X ]
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810-2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810-2.ast
index 743546b..ec8955d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810-2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810-2.ast
@@ -66,8 +66,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -91,11 +90,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Let Variable [ Name=$expensives ]
@@ -108,8 +105,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -128,8 +124,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -171,8 +166,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 Let Variable [ Name=$disc_prices ]
@@ -196,8 +190,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810.ast
index c6e9030..04e6b63 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue810.ast
@@ -52,8 +52,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -77,11 +76,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Let Variable [ Name=$cheap ]
@@ -91,8 +88,7 @@
     Variable [ Name=$m ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$m ]
+      AS Variable [ Name=$m ]
     ]
     Where
       OperatorExpr [
@@ -111,8 +107,7 @@
     Variable [ Name=$a ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$a ]
+      AS Variable [ Name=$a ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue827-2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue827-2.ast
index 6263b32..23e2076 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue827-2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query-issue827-2.ast
@@ -36,8 +36,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -65,8 +64,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -96,8 +94,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -136,8 +133,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -156,8 +152,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -185,8 +180,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -205,8 +199,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -222,8 +215,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849-2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849-2.ast
index 68be626..99cc6fa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849-2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849-2.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [s]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   (
     SELECT ELEMENT [
@@ -71,8 +70,7 @@
           )
         ]
       ]
-      AS
-      Variable [ Name=$z ]
+      AS Variable [ Name=$z ]
     ]
     Where
       OperatorExpr [
@@ -87,6 +85,5 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849.ast
index 3ee03e6..d0c967b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/query_issue849.ast
@@ -36,8 +36,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   (
     SELECT ELEMENT [
@@ -49,8 +48,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [s]
       ]
-      AS
-      Variable [ Name=$z ]
+      AS Variable [ Name=$z ]
     ]
     Where
       OperatorExpr [
@@ -65,6 +63,5 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric-desc.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric-desc.ast
index 94772a1..faa79c1 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric-desc.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric-desc.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric.ast
index a49fe29..cf34acc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-numeric.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string-desc.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string-desc.ast
index 4f20128..2f803f6 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string-desc.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string-desc.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string.ast
index bc35555..3aedf4d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/range-connector/sort-hint-on-closed-string.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/issue730.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/issue730.ast
index d7f7412..2efa289 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/issue730.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/issue730.ast
@@ -46,8 +46,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -64,8 +63,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
index 2b3ca1c..f09e21b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_01.ast
@@ -70,8 +70,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -95,8 +94,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
index 0a2af0c..ae63a0a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/leftouterjoin-probe-pidx-with-join-rtree-sidx_02.ast
@@ -70,8 +70,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -109,8 +108,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/query-issue838.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/query-issue838.ast
index c1b795d..a6266b8 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/query-issue838.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/query-issue838.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetHistorySubscriptions]
   ]
-  AS
-  Variable [ Name=$sub ]
+  AS Variable [ Name=$sub ]
 ,
   (
     SELECT ELEMENT [
@@ -57,8 +56,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TweetMessages]
       ]
-      AS
-      Variable [ Name=$tweet ]
+      AS Variable [ Name=$tweet ]
     ]
     Let Variable [ Name=$circle ]
       :=
@@ -77,8 +75,7 @@
         Variable [ Name=$circle ]
       ]
   )
-  AS
-  Variable [ Name=$text ]
+  AS Variable [ Name=$text ]
 ]
 Let Variable [ Name=$location ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_01.ast
index 5b3f0ed..988c5be 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_01.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_02.ast
index 65dcb89..7c60f2b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_02.ast
@@ -32,14 +32,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_03.ast
index a23d20d..1a79f18 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-index-join/spatial-intersect-point_03.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index-open.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index-open.ast
index d448f79..373614f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index-open.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index-open.ast
@@ -30,8 +30,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index.ast
index be9f7ba..54a2eee 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/rtree-secondary-index.ast
@@ -30,8 +30,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_01.ast
index 5d98fcf..4148306 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_01.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_02.ast
index 8cb00e4..e3c5cf3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_02.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_03.ast
index be27388..8e315b0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_03.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_04.ast
index 82c6a12..01927d0 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_04.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_05.ast
index a1a6dc6..cd42e5c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_05.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_06.ast
index 1b44ad2..22a703b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_06.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_07.ast
index 5479ba4..5c0f7a4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_07.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_08.ast
index 06ff6a1..400dc1d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-let-to-edit-distance-check_08.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_01.ast
index b0d66b8..e87ab92 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_01.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_02.ast
index bc55325..6113114 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_02.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_03.ast
index dbcb285..14bb9fa 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_03.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_04.ast
index dcaaab9..c3034c2 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_04.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_05.ast
index ab8a7ac..f32115c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_05.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_06.ast
index 2ec5fca..071f279 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_06.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_07.ast
index 44c733d..57a392a 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_07.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_08.ast
index 366a0bc..325931d 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/edit-distance-to-edit-distance-check_08.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-edit-distance-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-edit-distance-check.ast
index 225cd3c..c1b3382 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-edit-distance-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-edit-distance-check.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-jaccard-check.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-jaccard-check.ast
index bc71c3e..84c17f4 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-jaccard-check.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/fuzzyeq-to-jaccard-check.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_01.ast
index b91b293..711a1dc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_01.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_02.ast
index 9394db4..27ac1cb 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_02.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_03.ast
index 22ec108..7556b6f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_03.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_04.ast
index 1094e45..0e8ce0c 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_04.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_05.ast
index d83e97d..67702f3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_05.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_06.ast
index 84cbc0d..0b189e9 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_06.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_07.ast
index 693651d..8435543 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_07.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_08.ast
index 15e3929..8269193 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-let-to-jaccard-check_08.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_01.ast
index 62661bb..d54ff7e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_01.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_02.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_02.ast
index 3386596..ab47111 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_02.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_02.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_03.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_03.ast
index 9b836ee..eca8a1b 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_03.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_03.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_04.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_04.ast
index d601a98..d12f24e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_04.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_04.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_05.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_05.ast
index 3963f6f..9aaf423 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_05.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_05.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_06.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_06.ast
index d7e9ffcf..63e0f28 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_06.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_06.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_07.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_07.ast
index 484b6f1..cad2e24 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_07.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_07.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_08.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_08.ast
index e9d8f62..44d5c59 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_08.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/similarity/jaccard-to-jaccard-check_08.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/dont-skip-primary-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/dont-skip-primary-index.ast
index d5c4b08..a83918f 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/dont-skip-primary-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/dont-skip-primary-index.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-ngram-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-ngram-index.ast
index 87e800c..3b23ad3 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-ngram-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-ngram-index.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-rtree-secondary-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-rtree-secondary-index.ast
index be9f7ba..54a2eee 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-rtree-secondary-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-rtree-secondary-index.ast
@@ -30,8 +30,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index-2.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index-2.ast
index c534506..ccc8afc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index-2.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index-2.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index.ast
index c534506..ccc8afc 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-secondary-btree-index.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-word-index.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-word-index.ast
index 1212e22..1acf737 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-word-index.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/skip-index/skip-word-index.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/sort-cust.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/sort-cust.ast
index b9baf55..0925bfd 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/sort-cust.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/sort-cust.ast
@@ -45,8 +45,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization-above-join.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization-above-join.ast
index 80a8ba9..61f1678 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization-above-join.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization-above-join.ast
@@ -36,14 +36,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperLeft ]
+  AS Variable [ Name=$paperLeft ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperRight ]
+  AS Variable [ Name=$paperRight ]
 ,
   (
     SELECT ELEMENT [
@@ -71,8 +69,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperLeft ]
+      AS Variable [ Name=$paperLeft ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -86,14 +83,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenLeft ]
+      AS Variable [ Name=$prefixTokenLeft ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperRight ]
+      AS Variable [ Name=$paperRight ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -107,8 +102,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenRight ]
+      AS Variable [ Name=$prefixTokenRight ]
     ]
     Let Variable [ Name=$lenLeft ]
       :=
@@ -132,8 +126,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -142,8 +135,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -151,32 +143,22 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -189,8 +171,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -199,10 +180,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -237,8 +217,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -247,8 +226,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -256,36 +234,24 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenRight ]
-               AS lenRight
-              Variable [ Name=$tokensLeft ]
-               AS tokensLeft
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenRight:=Variable [ Name=$lenRight ]
+                tokensLeft:=Variable [ Name=$tokensLeft ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -298,8 +264,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -308,10 +273,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -375,32 +339,21 @@
         Variable [ Name=$paperRight ]
         Field=id
       ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensRight ]
-       AS tokensRight
-      Variable [ Name=$lenRight ]
-       AS lenRight
-      Variable [ Name=$tokensLeft ]
-       AS tokensLeft
-      Variable [ Name=$lenLeft ]
-       AS lenLeft
-      Variable [ Name=$prefixTokenRight ]
-       AS prefixTokenRight
-      Variable [ Name=$paperRight ]
-       AS paperRight
-      Variable [ Name=$prefixTokenLeft ]
-       AS prefixTokenLeft
-      Variable [ Name=$paperLeft ]
-       AS paperLeft
+        sim:=Variable [ Name=$sim ]
+        tokensRight:=Variable [ Name=$tokensRight ]
+        lenRight:=Variable [ Name=$lenRight ]
+        tokensLeft:=Variable [ Name=$tokensLeft ]
+        lenLeft:=Variable [ Name=$lenLeft ]
+        prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+        paperRight:=Variable [ Name=$paperRight ]
+        prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+        paperLeft:=Variable [ Name=$paperLeft ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization.ast
index 1704a22..8ab0020 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/split-materialization.ast
@@ -29,8 +29,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$d ]
+      AS Variable [ Name=$d ]
     ]
     Where
       OperatorExpr [
@@ -53,8 +52,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$d ]
+      AS Variable [ Name=$d ]
     ]
     Where
       OperatorExpr [
@@ -117,12 +115,10 @@
 ]
 ]
 FROM [  Variable [ Name=$lonelyusers ]
-  AS
-  Variable [ Name=$l1 ]
+  AS Variable [ Name=$l1 ]
 ,
   Variable [ Name=$lonelyusers2 ]
-  AS
-  Variable [ Name=$l2 ]
+  AS Variable [ Name=$l2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest-to-join_01.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest-to-join_01.ast
index adb3de6..d37b88e 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest-to-join_01.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest-to-join_01.ast
@@ -12,8 +12,7 @@
     LiteralExpr [LONG] [5]
     LiteralExpr [LONG] [6]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   OrderedListConstructor [
     LiteralExpr [LONG] [4]
@@ -23,8 +22,7 @@
     LiteralExpr [LONG] [8]
     LiteralExpr [LONG] [9]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest_list_in_subplan.ast b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest_list_in_subplan.ast
index c037665..9cdb149 100644
--- a/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest_list_in_subplan.ast
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results_parser_sqlpp/unnest_list_in_subplan.ast
@@ -35,8 +35,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -62,14 +61,12 @@
     ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TOKENSRANKEDADM]
       ]
-      AS
-      Variable [ Name=$tokenRanked ]
+      AS Variable [ Name=$tokenRanked ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/1.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/1.ast
index 4cd023d..807e7a7 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/1.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/1.ast
@@ -14,8 +14,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/2.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/2.ast
index fbf13fc..3bd944f 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/2.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/2.ast
@@ -21,15 +21,13 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Event]
   ]
-  AS
-  Variable [ Name=$event ]
+  AS Variable [ Name=$event ]
 ,
   FieldAccessor [
     Variable [ Name=$event ]
     Field=sponsoring_sigs
   ]
-  AS
-  Variable [ Name=$sponsor ]
+  AS Variable [ Name=$sponsor ]
 ]
 Let Variable [ Name=$es ]
   :=
@@ -52,15 +50,11 @@
     Variable [ Name=$sponsor ]
     Field=sig_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$es ]
-   AS es
-  Variable [ Name=$sponsor ]
-   AS sponsor
-  Variable [ Name=$event ]
-   AS event
+    es:=Variable [ Name=$es ]
+    sponsor:=Variable [ Name=$sponsor ]
+    event:=Variable [ Name=$event ]
   )
 
 Let Variable [ Name=$sig_sponsorship_count ]
@@ -74,8 +68,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
@@ -101,8 +94,7 @@
             ]
             ]
             FROM [              Variable [ Name=#1 ]
-              AS
-              Variable [ Name=#3 ]
+              AS Variable [ Name=#3 ]
             ]
           )
         ]
@@ -110,8 +102,7 @@
     ]
     ]
     FROM [      Variable [ Name=$es ]
-      AS
-      Variable [ Name=$e ]
+      AS Variable [ Name=$e ]
     ]
     Groupby
       Variable [ Name=$chapter_name ]
@@ -123,23 +114,15 @@
         ]
         Field=chapter_name
       ]
-      GROUP AS
-      Variable [ Name=#4 ]
+      GROUP AS Variable [ Name=#4 ]
       (
-      Variable [ Name=$e ]
-       AS e
-      Variable [ Name=$sig_sponsorship_count ]
-       AS sig_sponsorship_count
-      Variable [ Name=$es ]
-       AS es
-      Variable [ Name=$event ]
-       AS event
-      Variable [ Name=$sponsor ]
-       AS sponsor
-      Variable [ Name=$sig_name ]
-       AS sig_name
-      Variable [ Name=#1 ]
-       AS #1
+        e:=Variable [ Name=$e ]
+        sig_sponsorship_count:=Variable [ Name=$sig_sponsorship_count ]
+        es:=Variable [ Name=$es ]
+        event:=Variable [ Name=$event ]
+        sponsor:=Variable [ Name=$sponsor ]
+        sig_name:=Variable [ Name=$sig_name ]
+        #1:=Variable [ Name=#1 ]
       )
 
   )
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/4.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/4.ast
index 1aad304..f7272c5 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/4.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/4.ast
@@ -11,8 +11,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [SIGroup]
   ]
-  AS
-  Variable [ Name=$sig ]
+  AS Variable [ Name=$sig ]
 ]
 Let Variable [ Name=$similar_sigs ]
   :=
@@ -32,8 +31,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [SIGroup]
       ]
-      AS
-      Variable [ Name=$similar_sig ]
+      AS Variable [ Name=$similar_sig ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/5.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/5.ast
index dfb6f09..0fd42ae 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/5.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/5.ast
@@ -11,8 +11,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Event]
   ]
-  AS
-  Variable [ Name=$event ]
+  AS Variable [ Name=$event ]
 ]
 Let Variable [ Name=$collocated_events ]
   :=
@@ -32,8 +31,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Events]
       ]
-      AS
-      Variable [ Name=$collocated_event ]
+      AS Variable [ Name=$collocated_event ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/6.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/6.ast
index effebf2..0fb00ff 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/6.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/6.ast
@@ -19,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Users]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Let Variable [ Name=$similar_users ]
   :=
@@ -45,8 +44,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Users]
       ]
-      AS
-      Variable [ Name=$similar_user ]
+      AS Variable [ Name=$similar_user ]
     ]
     Let Variable [ Name=$similarity ]
       :=
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ANYInFieldAccessor.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ANYInFieldAccessor.ast
index 619350b..063e698 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ANYInFieldAccessor.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ANYInFieldAccessor.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Movie]
   ]
-  AS
-  Variable [ Name=$mv ]
+  AS Variable [ Name=$mv ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/IfInFLOWGR.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/IfInFLOWGR.ast
index a8b54c1..947c2d4 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/IfInFLOWGR.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/IfInFLOWGR.ast
@@ -19,14 +19,12 @@
     LiteralExpr [LONG] [30]
     LiteralExpr [LONG] [40]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   UnorderedListConstructor [
     LiteralExpr [LONG] [4]
     LiteralExpr [LONG] [5]
     LiteralExpr [LONG] [6]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/LetFor.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/LetFor.ast
index a46d1c9..68d47d8 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/LetFor.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/LetFor.ast
@@ -17,8 +17,7 @@
 ]
 ]
 FROM [  Variable [ Name=$users ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ListConstructor.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ListConstructor.ast
index f769a0d..475cd07 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ListConstructor.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/ListConstructor.ast
@@ -11,14 +11,12 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [3]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   UnorderedListConstructor [
     LiteralExpr [LONG] [4]
     LiteralExpr [LONG] [5]
     LiteralExpr [LONG] [6]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias.ast
index cb03fe8..62b84d8 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tbl_name]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=#1 ]
@@ -25,11 +24,9 @@
       ]
     ]
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Let Variable [ Name=$u ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias2.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias2.ast
index 6142478..c82e1da 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias2.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias2.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tbl_name]
   ]
-  AS
-  Variable [ Name=$root ]
+  AS Variable [ Name=$root ]
 ]
 Groupby
   Variable [ Name=#1 ]
@@ -32,11 +31,9 @@
     Variable [ Name=$root ]
     Field=id
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$root ]
-   AS root
+    root:=Variable [ Name=$root ]
   )
 
 Let Variable [ Name=$u ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias3.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias3.ast
index a7ae7ca..fd269aa 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias3.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/columnalias3.ast
@@ -11,8 +11,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tbl_name]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=#1 ]
@@ -30,11 +29,9 @@
       ]
     ]
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Let Variable [ Name=$u ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_array.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_array.ast
index 43c56e7..84a0a8a 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_array.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_array.ast
@@ -7,6 +7,5 @@
     LiteralExpr [LONG] [20]
     LiteralExpr [LONG] [30]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_bag.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_bag.ast
index 79cb01d..c1923cd 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_bag.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_collection_bag.ast
@@ -7,6 +7,5 @@
     LiteralExpr [LONG] [20]
     LiteralExpr [LONG] [30]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_correlate.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_correlate.ast
index 701d997..26a623b 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_correlate.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_correlate.ast
@@ -6,13 +6,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [sensors]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
   INNER UNNEST
     FieldAccessor [
       Variable [ Name=$s ]
       Field=readings
     ]
-     AS
-    Variable [ Name=$r ]
+     AS Variable [ Name=$r ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_flatten.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_flatten.ast
index f3c8a42..5f5e37f 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_flatten.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_flatten.ast
@@ -12,13 +12,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [sensors]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   FieldAccessor [
     Variable [ Name=$s ]
     Field=readings
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_join.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_join.ast
index d82b43d..9d28bd0 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_join.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_inner_join.ast
@@ -20,14 +20,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [sensors]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
   INNER JOIN
     FunctionCall Metadata.dataset@1[
       LiteralExpr [STRING] [sensorMeta]
     ]
-    AS
-    Variable [ Name=$m ]
+    AS Variable [ Name=$m ]
     ON
     OperatorExpr [
       FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate.ast
index f11ecaf..5098fbd 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate.ast
@@ -61,8 +61,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$sl ]
+  AS Variable [ Name=$sl ]
   LEFTOUTER UNNEST
     UnorderedListConstructor [
       RecordConstructor [
@@ -140,8 +139,7 @@
         )
       ]
     ]
-     AS
-    Variable [ Name=$sr ]
+     AS Variable [ Name=$sr ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate2.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate2.ast
index 6036b55..c8d695a 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate2.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_correlate2.ast
@@ -47,13 +47,11 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
   LEFTOUTER UNNEST
     FieldAccessor [
       Variable [ Name=$s ]
       Field=readings
     ]
-     AS
-    Variable [ Name=$r ]
+     AS Variable [ Name=$r ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_outer_join.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_outer_join.ast
index 998fc6f..cb25a66 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_outer_join.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_left_outer_join.ast
@@ -61,8 +61,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$sl ]
+  AS Variable [ Name=$sl ]
   LEFTOUTER JOIN
     UnorderedListConstructor [
       RecordConstructor [
@@ -140,8 +139,7 @@
         )
       ]
     ]
-    AS
-    Variable [ Name=$sr ]
+    AS Variable [ Name=$sr ]
     ON
     OperatorExpr [
       FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_where_select_clause.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_where_select_clause.ast
index b978b56..3f4caf6 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_where_select_clause.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/from_where_select_clause.ast
@@ -9,8 +9,7 @@
     LiteralExpr [LONG] [10]
     LiteralExpr [LONG] [10]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/functionDecl1.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/functionDecl1.ast
index 5983067..435d2f0 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/functionDecl1.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/functionDecl1.ast
@@ -20,15 +20,13 @@
     ]
     ]
     FROM [      Variable [ Name=$events ]
-      AS
-      Variable [ Name=$event ]
+      AS Variable [ Name=$event ]
 ,
       FieldAccessor [
         Variable [ Name=$event ]
         Field=sponsoring_sigs
       ]
-      AS
-      Variable [ Name=$sponsor ]
+      AS Variable [ Name=$sponsor ]
     ]
     Let Variable [ Name=$es ]
       :=
@@ -77,8 +75,7 @@
         ]
         ]
         FROM [          Variable [ Name=$es ]
-          AS
-          Variable [ Name=$e ]
+          AS Variable [ Name=$e ]
         ]
         Groupby
           Variable [ Name=$chapter_name ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/groupby_clause_count.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/groupby_clause_count.ast
index feeed6e..584c736 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/groupby_clause_count.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/groupby_clause_count.ast
@@ -9,8 +9,7 @@
     ]
     ]
     FROM [      Variable [ Name=#1 ]
-      AS
-      Variable [ Name=#2 ]
+      AS Variable [ Name=#2 ]
     ]
   )
 ]
@@ -89,8 +88,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Groupby
   Variable [ Name=$g ]
@@ -99,10 +97,8 @@
     Variable [ Name=$r ]
     Field=gas
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$r ]
-   AS r
+    r:=Variable [ Name=$r ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR.ast
index da4a74f..2f246e1 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR.ast
@@ -21,8 +21,7 @@
     Variable [ Name=$data ]
     ]
   )
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR1.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR1.ast
index ea08249..2af8be1 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR1.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR1.ast
@@ -16,8 +16,7 @@
       Else:
         Variable [ Name=$j ]
     ]
-    AS
-    Variable [ Name=$k ]
+    AS Variable [ Name=$k ]
   ]
   Where
     OperatorExpr [
@@ -33,14 +32,12 @@
     LiteralExpr [LONG] [30]
     LiteralExpr [LONG] [40]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   UnorderedListConstructor [
     LiteralExpr [LONG] [4]
     LiteralExpr [LONG] [5]
     LiteralExpr [LONG] [6]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR2.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR2.ast
index 84e2550..5e5ac9a 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR2.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR2.ast
@@ -16,8 +16,7 @@
       Else:
         Variable [ Name=$j ]
     ]
-    AS
-    Variable [ Name=$k ]
+    AS Variable [ Name=$k ]
   ]
   Where
     OperatorExpr [
@@ -38,19 +37,16 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [number]
         ]
-        AS
-        Variable [ Name=$tmp ]
+        AS Variable [ Name=$tmp ]
       ]
     )
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   UnorderedListConstructor [
     LiteralExpr [LONG] [4]
     LiteralExpr [LONG] [5]
     LiteralExpr [LONG] [6]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR3.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR3.ast
index a636e0d..b43aca8 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR3.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFLWOGR3.ast
@@ -21,15 +21,13 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Event]
   ]
-  AS
-  Variable [ Name=$event ]
+  AS Variable [ Name=$event ]
 ,
   FieldAccessor [
     Variable [ Name=$event ]
     Field=sponsoring_sigs
   ]
-  AS
-  Variable [ Name=$sponsor ]
+  AS Variable [ Name=$sponsor ]
 ]
 Let Variable [ Name=$es ]
   :=
@@ -52,15 +50,11 @@
     Variable [ Name=$sponsor ]
     Field=sig_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$es ]
-   AS es
-  Variable [ Name=$sponsor ]
-   AS sponsor
-  Variable [ Name=$event ]
-   AS event
+    es:=Variable [ Name=$es ]
+    sponsor:=Variable [ Name=$sponsor ]
+    event:=Variable [ Name=$event ]
   )
 
 Let Variable [ Name=$sig_sponsorship_count ]
@@ -74,8 +68,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
@@ -101,8 +94,7 @@
             ]
             ]
             FROM [              Variable [ Name=#1 ]
-              AS
-              Variable [ Name=#3 ]
+              AS Variable [ Name=#3 ]
             ]
           )
         ]
@@ -110,8 +102,7 @@
     ]
     ]
     FROM [      Variable [ Name=$es ]
-      AS
-      Variable [ Name=$e ]
+      AS Variable [ Name=$e ]
     ]
     Groupby
       Variable [ Name=$chapter_name ]
@@ -123,23 +114,15 @@
         ]
         Field=chapter_name
       ]
-      GROUP AS
-      Variable [ Name=#4 ]
+      GROUP AS Variable [ Name=#4 ]
       (
-      Variable [ Name=$e ]
-       AS e
-      Variable [ Name=$sig_sponsorship_count ]
-       AS sig_sponsorship_count
-      Variable [ Name=$es ]
-       AS es
-      Variable [ Name=$event ]
-       AS event
-      Variable [ Name=$sponsor ]
-       AS sponsor
-      Variable [ Name=$sig_name ]
-       AS sig_name
-      Variable [ Name=#1 ]
-       AS #1
+        e:=Variable [ Name=$e ]
+        sig_sponsorship_count:=Variable [ Name=$sig_sponsorship_count ]
+        es:=Variable [ Name=$es ]
+        event:=Variable [ Name=$event ]
+        sponsor:=Variable [ Name=$sponsor ]
+        sig_name:=Variable [ Name=$sig_name ]
+        #1:=Variable [ Name=#1 ]
       )
 
   )
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFor.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFor.ast
index d94617e..da1252e 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFor.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/nestedFor.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Movie]
   ]
-  AS
-  Variable [ Name=$mv ]
+  AS Variable [ Name=$mv ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/numberInFieldAccessor.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/numberInFieldAccessor.ast
index c9ad9d6..ef6707f 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/numberInFieldAccessor.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/numberInFieldAccessor.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Movie]
   ]
-  AS
-  Variable [ Name=$mv ]
+  AS Variable [ Name=$mv ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_clause_sugar.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_clause_sugar.ast
index 3049374..f985205 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_clause_sugar.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_clause_sugar.ast
@@ -10,8 +10,7 @@
     LiteralExpr [LONG] [10]
     LiteralExpr [LONG] [10]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_from_where_sugar.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_from_where_sugar.ast
index b978b56..3f4caf6 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_from_where_sugar.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/select_from_where_sugar.ast
@@ -9,8 +9,7 @@
     LiteralExpr [LONG] [10]
     LiteralExpr [LONG] [10]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/union.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/union.ast
index fdc8591..0b0ec68 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/union.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/union.ast
@@ -4,8 +4,7 @@
 ]
 FROM [  FunctionCall null.foo1@0[
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 UNION ALL 
   SELECT ELEMENT [
@@ -13,8 +12,7 @@
   ]
   FROM [    FunctionCall null.foo2@0[
     ]
-    AS
-    Variable [ Name=$l ]
+    AS Variable [ Name=$l ]
   ]
 UNION ALL 
   SELECT ELEMENT [
@@ -22,6 +20,5 @@
   ]
   FROM [    FunctionCall null.foo3@0[
     ]
-    AS
-    Variable [ Name=$l ]
+    AS Variable [ Name=$l ]
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/where_clause.ast b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/where_clause.ast
index 7a32a1f..4ada26d 100644
--- a/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/where_clause.ast
+++ b/asterixdb/asterix-app/src/test/resources/parserts/results_parser_sqlpp/where_clause.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [sensors]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec/agg_null_rec.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec/agg_null_rec.3.ast
index 3c4f5f4..89d8623 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec/agg_null_rec.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec/agg_null_rec.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -35,8 +34,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -55,8 +53,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -75,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec_1/agg_null_rec_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec_1/agg_null_rec_1.3.ast
index 5a12496..61d7014 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec_1/agg_null_rec_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_null_rec_1/agg_null_rec_1.3.ast
@@ -12,8 +12,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -36,12 +35,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -64,12 +61,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -92,12 +87,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -120,12 +113,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_number_rec/agg_number_rec.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_number_rec/agg_number_rec.3.ast
index 3c4f5f4..89d8623 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_number_rec/agg_number_rec.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/agg_number_rec/agg_number_rec.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -35,8 +34,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -55,8 +53,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -75,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double/avg_double.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double/avg_double.3.ast
index 772844d..f369b18 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double/avg_double.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double/avg_double.3.ast
@@ -12,8 +12,7 @@
           LiteralExpr [STRING] [3.0]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double_null/avg_double_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double_null/avg_double_null.3.ast
index ddec4ab..83cf6ef 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double_null/avg_double_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_double_null/avg_double_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_01/avg_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_01/avg_empty_01.3.ast
index c142f72..c8a2795 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_01/avg_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_01/avg_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_02/avg_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_02/avg_empty_02.3.ast
index 21b366e..2f96b47 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_02/avg_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_empty_02/avg_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float/avg_float.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float/avg_float.3.ast
index b7ac2aa..a9f805f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float/avg_float.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float/avg_float.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float_null/avg_float_nu.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float_null/avg_float_nu.3.ast
index 68c122f..bf526f8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float_null/avg_float_nu.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_float_null/avg_float_nu.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16/avg_int16.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16/avg_int16.3.ast
index 9a37e98..9d6f304 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16/avg_int16.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16/avg_int16.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16_null/avg_int16_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16_null/avg_int16_null.3.ast
index 1c48f72..7fe4c90 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16_null/avg_int16_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int16_null/avg_int16_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32/avg_int32.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32/avg_int32.3.ast
index a9e95b9..6f0431d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32/avg_int32.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32/avg_int32.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32_null/avg_int32_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32_null/avg_int32_null.3.ast
index 57e755c..114973d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32_null/avg_int32_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int32_null/avg_int32_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64/avg_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64/avg_int64.3.ast
index bba67d1..dc8d43c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64/avg_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64/avg_int64.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64_null/avg_int64_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64_null/avg_int64_null.3.ast
index a622e36..4edcfa4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64_null/avg_int64_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int64_null/avg_int64_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8/avg_int8.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8/avg_int8.3.ast
index e80871c..122ead6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8/avg_int8.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8/avg_int8.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8_null/avg_int8_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8_null/avg_int8_null.3.ast
index d0e1a63..6a7beba 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8_null/avg_int8_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_int8_null/avg_int8_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_mixed/avg_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_mixed/avg_mixed.3.ast
index 2d5c692..27e8113 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_mixed/avg_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/avg_mixed/avg_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_01/count_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_01/count_01.3.ast
index 13dd2e2..603ea9b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_01/count_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_01/count_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_01/count_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_01/count_empty_01.3.ast
index a83ec17..6482820 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_01/count_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_01/count_empty_01.3.ast
@@ -10,8 +10,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_02/count_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_02/count_empty_02.3.ast
index 36a38a9..e4fb920 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_02/count_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_empty_02/count_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_null/count_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_null/count_null.3.ast
index 6c274cf..3990ca7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_null/count_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/count_null/count_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue395/issue395.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue395/issue395.3.ast
index cbd0a79..4d546cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue395/issue395.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue395/issue395.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Employee]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue531_string_min_max/issue531_string_min_max.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue531_string_min_max/issue531_string_min_max.3.ast
index 6ffb156..29240da 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue531_string_min_max/issue531_string_min_max.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/issue531_string_min_max/issue531_string_min_max.3.ast
@@ -16,8 +16,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [t1]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
@@ -36,8 +35,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [t1]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_01/max_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_01/max_empty_01.3.ast
index 9f66425..d3c89c9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_01/max_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_01/max_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_02/max_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_02/max_empty_02.3.ast
index 85912ef..d7bf8ab 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_02/max_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/max_empty_02/max_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_01/min_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_01/min_empty_01.3.ast
index b62f1d5..825bbf4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_01/min_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_01/min_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_02/min_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_02/min_empty_02.3.ast
index 6aecde0..799e5e1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_02/min_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_empty_02/min_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_mixed/min_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_mixed/min_mixed.3.ast
index d92bce5..0bbf1c4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_mixed/min_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/min_mixed/min_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/query-issue400/query-issue400.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/query-issue400/query-issue400.3.ast
index 008601e..bc444a9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/query-issue400/query-issue400.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/query-issue400/query-issue400.3.ast
@@ -19,8 +19,7 @@
           LiteralExpr [LONG] [9]
         ]
       ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg/scalar_avg.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg/scalar_avg.3.ast
index 3f3652f..c8b53ac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg/scalar_avg.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg/scalar_avg.3.ast
@@ -101,6 +101,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg_null/scalar_avg_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg_null/scalar_avg_null.3.ast
index d1c0cbf..5f25851 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg_null/scalar_avg_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_avg_null/scalar_avg_null.3.ast
@@ -107,6 +107,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count/scalar_count.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count/scalar_count.3.ast
index 5e10637..fa5ab75 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count/scalar_count.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count/scalar_count.3.ast
@@ -111,6 +111,5 @@
     Variable [ Name=$d ]
     Variable [ Name=$s ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count_null/scalar_count_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count_null/scalar_count_null.3.ast
index 5213a15..3e49edf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count_null/scalar_count_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_count_null/scalar_count_null.3.ast
@@ -118,6 +118,5 @@
     Variable [ Name=$d ]
     Variable [ Name=$s ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max/scalar_max.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max/scalar_max.3.ast
index 62a81b9..8e4e110 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max/scalar_max.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max/scalar_max.3.ast
@@ -127,6 +127,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max_null/scalar_max_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max_null/scalar_max_null.3.ast
index 5781f80..2b025b8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max_null/scalar_max_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_max_null/scalar_max_null.3.ast
@@ -135,6 +135,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min/scalar_min.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min/scalar_min.3.ast
index aef2332..51aba85 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min/scalar_min.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min/scalar_min.3.ast
@@ -127,6 +127,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min_null/scalar_min_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min_null/scalar_min_null.3.ast
index e406615..add7c0f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min_null/scalar_min_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_min_null/scalar_min_null.3.ast
@@ -135,6 +135,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum/scalar_sum.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum/scalar_sum.3.ast
index b568d92..94e3c4d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum/scalar_sum.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum/scalar_sum.3.ast
@@ -101,6 +101,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum_null/scalar_sum_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum_null/scalar_sum_null.3.ast
index ce265b8..969685f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum_null/scalar_sum_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_sum_null/scalar_sum_null.3.ast
@@ -107,6 +107,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double/sum_double.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double/sum_double.3.ast
index 9132133..c0731ec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double/sum_double.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double/sum_double.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [DOUBLE] [2.0]
         LiteralExpr [DOUBLE] [3.0]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double_null/sum_double_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double_null/sum_double_null.3.ast
index ce4271d..0cb3ae4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double_null/sum_double_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_double_null/sum_double_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_01/sum_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_01/sum_empty_01.3.ast
index 06a668c..ee24758 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_01/sum_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_01/sum_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_02/sum_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_02/sum_empty_02.3.ast
index 86aa8d1..72f2f5a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_02/sum_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_empty_02/sum_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float/sum_float.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float/sum_float.3.ast
index c456ba6..6004dcc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float/sum_float.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float/sum_float.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float_null/sum_float_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float_null/sum_float_null.3.ast
index baa9b91..1d5e7f4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float_null/sum_float_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_float_null/sum_float_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16/sum_int16.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16/sum_int16.3.ast
index a9176a8..c499b25 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16/sum_int16.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16/sum_int16.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16_null/sum_int16_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16_null/sum_int16_null.3.ast
index 2d49797..027fe91 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16_null/sum_int16_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int16_null/sum_int16_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32/sum_int32.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32/sum_int32.3.ast
index 70a818a..828aa87 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32/sum_int32.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32/sum_int32.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32_null/sum_int32_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32_null/sum_int32_null.3.ast
index 0f6079a..338a7ff 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32_null/sum_int32_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int32_null/sum_int32_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64/sum_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64/sum_int64.3.ast
index 54dc886..4510cc7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64/sum_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64/sum_int64.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64_null/sum_int64_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64_null/sum_int64_null.3.ast
index 4f2524a..c5036ae 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64_null/sum_int64_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int64_null/sum_int64_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8/sum_int8.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8/sum_int8.3.ast
index dcffbf2..8e99a7e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8/sum_int8.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8/sum_int8.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8_null/sum_int8_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8_null/sum_int8_null.3.ast
index 3bdfe85..121675e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8_null/sum_int8_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_int8_null/sum_int8_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_mixed/sum_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_mixed/sum_mixed.3.ast
index 1d0d5be..73ed370 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_mixed/sum_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_mixed/sum_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_null-with-pred/sum_null-with-pred.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_null-with-pred/sum_null-with-pred.3.ast
index 40ba26b..acca20f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_null-with-pred/sum_null-with-pred.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_null-with-pred/sum_null-with-pred.3.ast
@@ -13,8 +13,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [tdst]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       FunctionCall test.not@1[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_numeric_null/sum_numeric_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_numeric_null/sum_numeric_null.3.ast
index a59827a..c3fe254 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_numeric_null/sum_numeric_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/sum_numeric_null/sum_numeric_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [tdst]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec/agg_null_rec.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec/agg_null_rec.3.ast
index d73dacf..035396d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec/agg_null_rec.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec/agg_null_rec.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -35,8 +34,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -55,8 +53,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -75,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec_1/agg_null_rec_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec_1/agg_null_rec_1.3.ast
index f7bad79..426089f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec_1/agg_null_rec_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_null_rec_1/agg_null_rec_1.3.ast
@@ -12,8 +12,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -36,12 +35,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -64,12 +61,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -92,12 +87,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -120,12 +113,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Test]
               ]
-              AS
-              Variable [ Name=$t ]
+              AS Variable [ Name=$t ]
             ]
           )
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_number_rec/agg_number_rec.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_number_rec/agg_number_rec.3.ast
index d73dacf..035396d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_number_rec/agg_number_rec.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/agg_number_rec/agg_number_rec.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -35,8 +34,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -55,8 +53,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -75,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Test]
           ]
-          AS
-          Variable [ Name=$t ]
+          AS Variable [ Name=$t ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double/avg_double.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double/avg_double.3.ast
index ea15957..240b5a0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double/avg_double.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double/avg_double.3.ast
@@ -12,8 +12,7 @@
           LiteralExpr [STRING] [3.0]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double_null/avg_double_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double_null/avg_double_null.3.ast
index 70a1738..4d4bbbf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double_null/avg_double_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_double_null/avg_double_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_01/avg_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_01/avg_empty_01.3.ast
index 441ca62..ec85e19 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_01/avg_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_01/avg_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_02/avg_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_02/avg_empty_02.3.ast
index 2fe644b..a8ce8c9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_02/avg_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_empty_02/avg_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float/avg_float.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float/avg_float.3.ast
index 927f646..7bcc0b5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float/avg_float.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float/avg_float.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float_null/avg_float_nu.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float_null/avg_float_nu.3.ast
index ce9cbf2..0f382fe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float_null/avg_float_nu.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_float_null/avg_float_nu.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16/avg_int16.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16/avg_int16.3.ast
index 88332e3..6019b99 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16/avg_int16.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16/avg_int16.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16_null/avg_int16_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16_null/avg_int16_null.3.ast
index 4f5daa5..7f2fbc7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16_null/avg_int16_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int16_null/avg_int16_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32/avg_int32.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32/avg_int32.3.ast
index fe7ef21..ae9ef12 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32/avg_int32.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32/avg_int32.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32_null/avg_int32_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32_null/avg_int32_null.3.ast
index 286d2bd..7a0525b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32_null/avg_int32_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int32_null/avg_int32_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64/avg_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64/avg_int64.3.ast
index 047d806..b8b6535 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64/avg_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64/avg_int64.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64_null/avg_int64_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64_null/avg_int64_null.3.ast
index bad056d..265a61f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64_null/avg_int64_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int64_null/avg_int64_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8/avg_int8.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8/avg_int8.3.ast
index e6b1c11..664587d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8/avg_int8.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8/avg_int8.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8_null/avg_int8_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8_null/avg_int8_null.3.ast
index 399f61b..1f3e356 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8_null/avg_int8_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_int8_null/avg_int8_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_mixed/avg_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_mixed/avg_mixed.3.ast
index 5d36b1a..89bf677 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_mixed/avg_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/avg_mixed/avg_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_01/count_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_01/count_01.3.ast
index e58e38a..4a6fa5f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_01/count_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_01/count_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_01/count_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_01/count_empty_01.3.ast
index 1d06a82..5912641 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_01/count_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_01/count_empty_01.3.ast
@@ -10,8 +10,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_02/count_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_02/count_empty_02.3.ast
index 9ed1050..fca2bf6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_02/count_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_empty_02/count_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_null/count_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_null/count_null.3.ast
index b46d1b3..d86a192 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_null/count_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/count_null/count_null.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Numeric]
           ]
-          AS
-          Variable [ Name=$x ]
+          AS Variable [ Name=$x ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue395/issue395.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue395/issue395.3.ast
index 983cc6d..4d200e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue395/issue395.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue395/issue395.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Employee]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue531_string_min_max/issue531_string_min_max.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue531_string_min_max/issue531_string_min_max.3.ast
index e37c5a4..f45eb74 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue531_string_min_max/issue531_string_min_max.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/issue531_string_min_max/issue531_string_min_max.3.ast
@@ -16,8 +16,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [t1]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
@@ -36,8 +35,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [t1]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_01/max_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_01/max_empty_01.3.ast
index b5c9a3e..75f0c4f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_01/max_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_01/max_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_02/max_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_02/max_empty_02.3.ast
index 4e6b888..08d23dd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_02/max_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/max_empty_02/max_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_01/min_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_01/min_empty_01.3.ast
index 1ea9d4d..e5ad077 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_01/min_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_01/min_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_02/min_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_02/min_empty_02.3.ast
index cc240fa..d799d4c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_02/min_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_empty_02/min_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_mixed/min_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_mixed/min_mixed.3.ast
index 27ab397..eecf3eb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_mixed/min_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/min_mixed/min_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/query-issue400/query-issue400.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/query-issue400/query-issue400.3.ast
index 33aa6f6..2f3778c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/query-issue400/query-issue400.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/query-issue400/query-issue400.3.ast
@@ -19,8 +19,7 @@
           LiteralExpr [LONG] [9]
         ]
       ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg/scalar_avg.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg/scalar_avg.3.ast
index bde3209..701fe21 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg/scalar_avg.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg/scalar_avg.3.ast
@@ -101,6 +101,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg_null/scalar_avg_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg_null/scalar_avg_null.3.ast
index 1d9e4df..3a0e4fb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg_null/scalar_avg_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_avg_null/scalar_avg_null.3.ast
@@ -107,6 +107,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count/scalar_count.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count/scalar_count.3.ast
index 7abcc7a..88efa93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count/scalar_count.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count/scalar_count.3.ast
@@ -111,6 +111,5 @@
     Variable [ Name=$d ]
     Variable [ Name=$s ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count_null/scalar_count_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count_null/scalar_count_null.3.ast
index e1e0c6e..8f57e33 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count_null/scalar_count_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_count_null/scalar_count_null.3.ast
@@ -118,6 +118,5 @@
     Variable [ Name=$d ]
     Variable [ Name=$s ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max/scalar_max.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max/scalar_max.3.ast
index b7bd61e..2e71b2aa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max/scalar_max.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max/scalar_max.3.ast
@@ -127,6 +127,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max_null/scalar_max_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max_null/scalar_max_null.3.ast
index da189de..33a6a4b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max_null/scalar_max_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_max_null/scalar_max_null.3.ast
@@ -135,6 +135,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min/scalar_min.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min/scalar_min.3.ast
index 8d150cf..819797f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min/scalar_min.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min/scalar_min.3.ast
@@ -127,6 +127,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min_null/scalar_min_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min_null/scalar_min_null.3.ast
index b35d3d3..4d6f373 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min_null/scalar_min_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_min_null/scalar_min_null.3.ast
@@ -135,6 +135,5 @@
     Variable [ Name=$s ]
     Variable [ Name=$dt ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum/scalar_sum.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum/scalar_sum.3.ast
index 32235b5..5e157ed 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum/scalar_sum.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum/scalar_sum.3.ast
@@ -101,6 +101,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum_null/scalar_sum_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum_null/scalar_sum_null.3.ast
index a75fe6f..2a66bea 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum_null/scalar_sum_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/scalar_sum_null/scalar_sum_null.3.ast
@@ -107,6 +107,5 @@
     Variable [ Name=$f ]
     Variable [ Name=$d ]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double/sum_double.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double/sum_double.3.ast
index 4299d22..9b1d608 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double/sum_double.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double/sum_double.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [DOUBLE] [2.0]
         LiteralExpr [DOUBLE] [3.0]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double_null/sum_double_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double_null/sum_double_null.3.ast
index 486ab5c..524dddc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double_null/sum_double_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_double_null/sum_double_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_01/sum_empty_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_01/sum_empty_01.3.ast
index 601a419..d646ceb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_01/sum_empty_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_01/sum_empty_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_02/sum_empty_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_02/sum_empty_02.3.ast
index 1a8ee7d..3a63d12 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_02/sum_empty_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_empty_02/sum_empty_02.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Test]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float/sum_float.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float/sum_float.3.ast
index 227e495..c8734ab 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float/sum_float.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float/sum_float.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float_null/sum_float_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float_null/sum_float_null.3.ast
index cdb85ab..4743a4d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float_null/sum_float_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_float_null/sum_float_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16/sum_int16.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16/sum_int16.3.ast
index 2492cfd..9aa5845 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16/sum_int16.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16/sum_int16.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16_null/sum_int16_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16_null/sum_int16_null.3.ast
index 917f0ff..2eb24c4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16_null/sum_int16_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int16_null/sum_int16_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32/sum_int32.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32/sum_int32.3.ast
index 99ab8bf..753a357 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32/sum_int32.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32/sum_int32.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32_null/sum_int32_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32_null/sum_int32_null.3.ast
index 3dfc636..0572107 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32_null/sum_int32_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int32_null/sum_int32_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64/sum_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64/sum_int64.3.ast
index 8e9351c..ad9a54c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64/sum_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64/sum_int64.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64_null/sum_int64_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64_null/sum_int64_null.3.ast
index 6b11722..dba19a2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64_null/sum_int64_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int64_null/sum_int64_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8/sum_int8.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8/sum_int8.3.ast
index 79b3bf9..12957d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8/sum_int8.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8/sum_int8.3.ast
@@ -17,8 +17,7 @@
           LiteralExpr [STRING] [3]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8_null/sum_int8_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8_null/sum_int8_null.3.ast
index 8ec8d54..a43f72f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8_null/sum_int8_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_int8_null/sum_int8_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Numeric]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_mixed/sum_mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_mixed/sum_mixed.3.ast
index 74a268d..14e5f18 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_mixed/sum_mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_mixed/sum_mixed.3.ast
@@ -15,8 +15,7 @@
           LiteralExpr [STRING] [2013-01-01]
         ]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_null-with-pred/sum_null-with-pred.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_null-with-pred/sum_null-with-pred.3.ast
index ccd8438..38a2b7a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_null-with-pred/sum_null-with-pred.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_null-with-pred/sum_null-with-pred.3.ast
@@ -13,8 +13,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [tdst]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       FunctionCall test.not@1[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_numeric_null/sum_numeric_null.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_numeric_null/sum_numeric_null.3.ast
index 38b048a..7712f82 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_numeric_null/sum_numeric_null.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate/sum_numeric_null/sum_numeric_null.3.ast
@@ -12,8 +12,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [tdst]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby-2/big_object_groupby.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby-2/big_object_groupby.3.ast
index e02bd2e..3fc7b9f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby-2/big_object_groupby.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby-2/big_object_groupby.3.ast
@@ -24,8 +24,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Line]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$comment ]
@@ -40,11 +39,9 @@
     Variable [ Name=$i ]
     Field=l_orderkey
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby/big_object_groupby.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby/big_object_groupby.3.ast
index c2d00c9..885385d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby/big_object_groupby.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_groupby/big_object_groupby.3.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Line]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$partkey ]
@@ -27,11 +26,9 @@
     Variable [ Name=$i ]
     Field=l_partkey
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_join/big_object_join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_join/big_object_join.3.ast
index 301c358..1d781bc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_join/big_object_join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_join/big_object_join.3.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Order]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_sort/big_object_sort.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_sort/big_object_sort.3.ast
index 22f3ccf..61d5c19 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_sort/big_object_sort.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/big-object/big_object_sort/big_object_sort.3.ast
@@ -41,8 +41,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Order]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/equal_join/equal_join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/equal_join/equal_join.3.ast
index dab21a7..fed3916 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/equal_join/equal_join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/equal_join/equal_join.3.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [UserCopy]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/index_join/index_join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/index_join/index_join.3.ast
index dab21a7..fed3916 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/index_join/index_join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/index_join/index_join.3.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [UserCopy]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/insert/insert.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/insert/insert.3.ast
index a1aa5bd..4123c5a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/insert/insert.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/insert/insert.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [UserOpen]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/print/print.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/print/print.3.ast
index 7ef8419..91609e5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/print/print.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/binary/print/print.3.ast
@@ -24,8 +24,7 @@
           LiteralExpr [STRING] [01020304050607080900]
           LiteralExpr [STRING] []
         ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   )
@@ -52,8 +51,7 @@
           LiteralExpr [STRING] [QXN0ZXJpeAE=]
           LiteralExpr [STRING] [QXN0ZXJpeAE8]
         ]
-        AS
-        Variable [ Name=$j ]
+        AS Variable [ Name=$j ]
       ]
     )
   )
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_order/datetime_order.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_order/datetime_order.3.ast
index 7fe9bf7..491637d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_order/datetime_order.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_order/datetime_order.3.ast
@@ -71,8 +71,7 @@
     Variable [ Name=$dt10 ]
     Variable [ Name=$dt11 ]
   ]
-  AS
-  Variable [ Name=$dt ]
+  AS Variable [ Name=$dt ]
 ]
 Orderby
   Variable [ Name=$dt ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_range/datetime_range.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_range/datetime_range.3.ast
index ce1f738..bfadfc4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_range/datetime_range.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/datetime_range/datetime_range.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterData]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/double_gte_01/double_gte_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/double_gte_01/double_gte_01.3.ast
index 2663a8c..20669a9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/double_gte_01/double_gte_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/double_gte_01/double_gte_01.3.ast
@@ -9,8 +9,7 @@
     LiteralExpr [DOUBLE] [0.9]
     LiteralExpr [DOUBLE] [0.901]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/eq_01/eq_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/eq_01/eq_01.3.ast
index 241fdf7..6cace19 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/eq_01/eq_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/eq_01/eq_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gt_01/gt_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gt_01/gt_01.3.ast
index 2d7cd6f..5a30674 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gt_01/gt_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gt_01/gt_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [3]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gte_01/gte_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gte_01/gte_01.3.ast
index 9396639..b7d177b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gte_01/gte_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/gte_01/gte_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [3]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lt_01/lt_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lt_01/lt_01.3.ast
index 76a06d6..c6e93d98 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lt_01/lt_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lt_01/lt_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [3]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lte_01/lte_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lte_01/lte_01.3.ast
index e01bc50..844024e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lte_01/lte_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/lte_01/lte_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [3]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/neq_01/neq_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/neq_01/neq_01.3.ast
index a02d844..7ebd807 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/neq_01/neq_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/neq_01/neq_01.3.ast
@@ -8,8 +8,7 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/year_month_duration_order/year_month_duration_order.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/year_month_duration_order/year_month_duration_order.3.ast
index 4829893..3d1f63c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/year_month_duration_order/year_month_duration_order.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/comparison/year_month_duration_order/year_month_duration_order.3.ast
@@ -29,8 +29,7 @@
     Variable [ Name=$dr3 ]
     Variable [ Name=$dr4 ]
   ]
-  AS
-  Variable [ Name=$dr ]
+  AS Variable [ Name=$dr ]
 ]
 Orderby
   Variable [ Name=$dr ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv01/cross-dv01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv01/cross-dv01.3.ast
index 7ef8a6f..7843472 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv01/cross-dv01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv01/cross-dv01.3.ast
@@ -26,24 +26,20 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [student.ugdstd]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [teacher.prof]
   ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [student.gdstd]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [teacher.pstdoc]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv02/cross-dv02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv02/cross-dv02.3.ast
index 33161dd..d45d4ec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv02/cross-dv02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv02/cross-dv02.3.ast
@@ -5,8 +5,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Dataset]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv03/cross-dv03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv03/cross-dv03.3.ast
index 5c0d413..67fed71 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv03/cross-dv03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv03/cross-dv03.3.ast
@@ -8,8 +8,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Metadata.Dataset]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv04/cross-dv04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv04/cross-dv04.3.ast
index 33161dd..d45d4ec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv04/cross-dv04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv04/cross-dv04.3.ast
@@ -5,8 +5,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Dataset]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv07/cross-dv07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv07/cross-dv07.3.ast
index cd41f99..5857a1f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv07/cross-dv07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv07/cross-dv07.3.ast
@@ -5,8 +5,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test.employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv15/cross-dv15.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv15/cross-dv15.3.ast
index 9395e60..e4a2db3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv15/cross-dv15.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv15/cross-dv15.3.ast
@@ -46,8 +46,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Function]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv19/cross-dv19.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv19/cross-dv19.3.ast
index f12fad9..c951c62 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv19/cross-dv19.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv19/cross-dv19.3.ast
@@ -5,8 +5,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Dataset]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv20/cross-dv20.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv20/cross-dv20.3.ast
index 7ef8a6f..7843472 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv20/cross-dv20.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/cross-dv20/cross-dv20.3.ast
@@ -26,24 +26,20 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [student.ugdstd]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [teacher.prof]
   ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [student.gdstd]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [teacher.pstdoc]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/insert_across_dataverses/insert_across_dataverses.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/insert_across_dataverses/insert_across_dataverses.3.ast
index dc5937b..01e321b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/insert_across_dataverses/insert_across_dataverses.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/insert_across_dataverses/insert_across_dataverses.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test2.Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/join_across_dataverses/join_across_dataverses.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/join_across_dataverses/join_across_dataverses.3.ast
index 15df5c4..84b9dcf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/join_across_dataverses/join_across_dataverses.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/cross-dataverse/join_across_dataverses/join_across_dataverses.3.ast
@@ -46,14 +46,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test1.Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test2.Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_01/customer_q_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_01/customer_q_01.3.ast
index 7fd2caf..8188ad5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_01/customer_q_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_01/customer_q_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_02/customer_q_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_02/customer_q_02.3.ast
index 5e940f2..a439f9d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_02/customer_q_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_02/customer_q_02.3.ast
@@ -28,8 +28,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$nestedRec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_03/customer_q_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_03/customer_q_03.3.ast
index 54f2594..49bc6ce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_03/customer_q_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_03/customer_q_03.3.ast
@@ -35,8 +35,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$nestedRec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_04/customer_q_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_04/customer_q_04.3.ast
index 40c17e4..351b4ef 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_04/customer_q_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_04/customer_q_04.3.ast
@@ -36,8 +36,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_05/customer_q_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_05/customer_q_05.3.ast
index 7f6f5ef..460fdd3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_05/customer_q_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_05/customer_q_05.3.ast
@@ -28,8 +28,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_06/customer_q_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_06/customer_q_06.3.ast
index 509909b..5d80076 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_06/customer_q_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_06/customer_q_06.3.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_07/customer_q_07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_07/customer_q_07.3.ast
index 352bac2..b8e9644 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_07/customer_q_07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_07/customer_q_07.3.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_08/customer_q_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_08/customer_q_08.3.ast
index 4919b5e..6ebc2b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_08/customer_q_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/customer_q_08/customer_q_08.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/denorm-cust-order_02/denorm-cust-order_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/denorm-cust-order_02/denorm-cust-order_02.3.ast
index e9011e1..7af85d1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/denorm-cust-order_02/denorm-cust-order_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/denorm-cust-order_02/denorm-cust-order_02.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomerOrders2]
   ]
-  AS
-  Variable [ Name=$co ]
+  AS Variable [ Name=$co ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_01/join_q_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_01/join_q_01.3.ast
index ec8788f..d36f4fb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_01/join_q_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_01/join_q_01.3.ast
@@ -45,14 +45,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_02/join_q_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_02/join_q_02.3.ast
index 9375a39..e7bcf70 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_02/join_q_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_02/join_q_02.3.ast
@@ -33,14 +33,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_03/join_q_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_03/join_q_03.3.ast
index bd229b6..239ceac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_03/join_q_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_03/join_q_03.3.ast
@@ -65,14 +65,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$rec ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_04/join_q_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_04/join_q_04.3.ast
index 3cb59e2..92d78da 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_04/join_q_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/join_q_04/join_q_04.3.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Orders]
         ]
-        AS
-        Variable [ Name=$o ]
+        AS Variable [ Name=$o ]
       ]
       Where
         OperatorExpr [
@@ -52,8 +51,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/load-test/load-test.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/load-test/load-test.4.ast
index dd5ca6b..cd92dce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/load-test/load-test.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/load-test/load-test.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [c2]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_01/order_q_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_01/order_q_01.3.ast
index 69f927f..d6b4d05 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_01/order_q_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_01/order_q_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_02/order_q_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_02/order_q_02.3.ast
index 57da1bd..1966962 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_02/order_q_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_02/order_q_02.3.ast
@@ -35,8 +35,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$c1 ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_03/order_q_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_03/order_q_03.3.ast
index 3bfbdcd..d844943 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_03/order_q_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_03/order_q_03.3.ast
@@ -52,8 +52,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$c1 ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_04/order_q_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_04/order_q_04.3.ast
index 42a314b..755c260 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_04/order_q_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_04/order_q_04.3.ast
@@ -60,8 +60,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$c1 ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_05/order_q_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_05/order_q_05.3.ast
index c519889..3b6ed3d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_05/order_q_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_05/order_q_05.3.ast
@@ -57,8 +57,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$c1 ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_06/order_q_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_06/order_q_06.3.ast
index d2c6329..0221c9d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_06/order_q_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/custord/order_q_06/order_q_06.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$c3 ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q1/q1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q1/q1.3.ast
index 612975d..a4005db 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q1/q1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q1/q1.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [User]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q2/q2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q2/q2.3.ast
index fc67ce2..f08b448 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q2/q2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dapd/q2/q2.3.ast
@@ -22,15 +22,13 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Event]
   ]
-  AS
-  Variable [ Name=$event ]
+  AS Variable [ Name=$event ]
 ,
   FieldAccessor [
     Variable [ Name=$event ]
     Field=sponsoring_sigs
   ]
-  AS
-  Variable [ Name=$sponsor ]
+  AS Variable [ Name=$sponsor ]
 ]
 Let Variable [ Name=$es ]
   :=
@@ -53,15 +51,11 @@
     Variable [ Name=$sponsor ]
     Field=sig_id
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$es ]
-   AS es
-  Variable [ Name=$sponsor ]
-   AS sponsor
-  Variable [ Name=$event ]
-   AS event
+    es:=Variable [ Name=$es ]
+    sponsor:=Variable [ Name=$sponsor ]
+    event:=Variable [ Name=$event ]
   )
 
 Let Variable [ Name=$sig_sponsorship_count ]
@@ -75,8 +69,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
@@ -102,8 +95,7 @@
             ]
             ]
             FROM [              Variable [ Name=#3 ]
-              AS
-              Variable [ Name=#4 ]
+              AS Variable [ Name=#4 ]
             ]
           )
         ]
@@ -111,8 +103,7 @@
     ]
     ]
     FROM [      Variable [ Name=$es ]
-      AS
-      Variable [ Name=$e ]
+      AS Variable [ Name=$e ]
     ]
     Groupby
       Variable [ Name=$chapter_name ]
@@ -124,23 +115,15 @@
         ]
         Field=chapter_name
       ]
-      GROUP AS
-      Variable [ Name=#3 ]
+      GROUP AS Variable [ Name=#3 ]
       (
-      Variable [ Name=$e ]
-       AS e
-      Variable [ Name=$sig_sponsorship_count ]
-       AS sig_sponsorship_count
-      Variable [ Name=$es ]
-       AS es
-      Variable [ Name=$event ]
-       AS event
-      Variable [ Name=$sponsor ]
-       AS sponsor
-      Variable [ Name=$sig_id ]
-       AS sig_id
-      Variable [ Name=#1 ]
-       AS #1
+        e:=Variable [ Name=$e ]
+        sig_sponsorship_count:=Variable [ Name=$sig_sponsorship_count ]
+        es:=Variable [ Name=$es ]
+        event:=Variable [ Name=$event ]
+        sponsor:=Variable [ Name=$sponsor ]
+        sig_id:=Variable [ Name=$sig_id ]
+        #1:=Variable [ Name=#1 ]
       )
 
   )
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443-2/query-issue443-2.1.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443-2/query-issue443-2.1.ast
index b2a8474..e5b98d2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443-2/query-issue443-2.1.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443-2/query-issue443-2.1.ast
@@ -64,6 +64,5 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443/query-issue443.1.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443/query-issue443.1.ast
index ebbabb7..06e56e1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443/query-issue443.1.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/distinct/query-issue443/query-issue443.1.ast
@@ -39,6 +39,5 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-cltype/create-drop-cltype.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-cltype/create-drop-cltype.3.ast
index b793763..c698b2d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-cltype/create-drop-cltype.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-cltype/create-drop-cltype.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Datatype]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-opntype/create-drop-opntype.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-opntype/create-drop-opntype.3.ast
index b793763..c698b2d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-opntype/create-drop-opntype.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/create-drop-opntype/create-drop-opntype.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Datatype]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
index 93180bd..38a6ea9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-multi-statement/delete-multi-statement.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-multi-statement/delete-multi-statement.3.ast
index a5a5824..8968082 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-multi-statement/delete-multi-statement.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-multi-statement/delete-multi-statement.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-syntax-change/delete-syntax-change.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-syntax-change/delete-syntax-change.3.ast
index 93180bd..38a6ea9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-syntax-change/delete-syntax-change.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/delete-syntax-change/delete-syntax-change.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
index 4612d6e..2bf9eb7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Index]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-index/drop-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-index/drop-index.4.ast
index 6352064..6802467 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-index/drop-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/drop-index/drop-index.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/empty-load-with-index/empty-load-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/empty-load-with-index/empty-load-with-index.3.ast
index 2ab0040..d52d730 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/empty-load-with-index/empty-load-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/empty-load-with-index/empty-load-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
index 7839ec7..4a6c0e4e5f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test.employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset/insert-and-scan-dataset.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
index 8d78a96..bb37414 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [myData]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-joined-datasets/insert-and-scan-joined-datasets.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-joined-datasets/insert-and-scan-joined-datasets.3.ast
index 8d78a96..bb37414 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-joined-datasets/insert-and-scan-joined-datasets.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-and-scan-joined-datasets/insert-and-scan-joined-datasets.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [myData]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
index e09a921..7553fc3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset/insert-into-empty-dataset.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset/insert-into-empty-dataset.3.ast
index e09a921..7553fc3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset/insert-into-empty-dataset.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-empty-dataset/insert-into-empty-dataset.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
index 037f474..961abaf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
index e09a921..7553fc3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_01/insert-into-loaded-dataset_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_01/insert-into-loaded-dataset_01.3.ast
index e09a921..7553fc3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_01/insert-into-loaded-dataset_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_01/insert-into-loaded-dataset_01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_02/insert-into-loaded-dataset_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_02/insert-into-loaded-dataset_02.3.ast
index 9ec1229..7a4233f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_02/insert-into-loaded-dataset_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-into-loaded-dataset_02/insert-into-loaded-dataset_02.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tmp]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-src-dst-01/insert-src-dst-01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-src-dst-01/insert-src-dst-01.3.ast
index f646e71..660fb7f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-src-dst-01/insert-src-dst-01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-src-dst-01/insert-src-dst-01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-syntax/insert-syntax.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-syntax/insert-syntax.3.ast
index 1c6d7f0..e739a6d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-syntax/insert-syntax.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-syntax/insert-syntax.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_01/insert-with-autogenerated-pk_adm_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_01/insert-with-autogenerated-pk_adm_01.3.ast
index e79a75b..0482435 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_01/insert-with-autogenerated-pk_adm_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_01/insert-with-autogenerated-pk_adm_01.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_02/insert-with-autogenerated-pk_adm_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_02/insert-with-autogenerated-pk_adm_02.3.ast
index e79a75b..0482435 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_02/insert-with-autogenerated-pk_adm_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_02/insert-with-autogenerated-pk_adm_02.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_03/insert-with-autogenerated-pk_adm_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_03/insert-with-autogenerated-pk_adm_03.3.ast
index 6579dcd..c02fa79 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_03/insert-with-autogenerated-pk_adm_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert-with-autogenerated-pk_adm_03/insert-with-autogenerated-pk_adm_03.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert/insert.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert/insert.3.ast
index d3c7e57..4d878f1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert/insert.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert/insert.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert_less_nc/insert_less_nc.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert_less_nc/insert_less_nc.3.ast
index d3c7e57..4d878f1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert_less_nc/insert_less_nc.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/insert_less_nc/insert_less_nc.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_01/load-with-autogenerated-pk_adm_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_01/load-with-autogenerated-pk_adm_01.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_01/load-with-autogenerated-pk_adm_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_01/load-with-autogenerated-pk_adm_01.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_02/load-with-autogenerated-pk_adm_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_02/load-with-autogenerated-pk_adm_01.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_02/load-with-autogenerated-pk_adm_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_02/load-with-autogenerated-pk_adm_01.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_03/load-with-autogenerated-pk_adm_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_03/load-with-autogenerated-pk_adm_03.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_03/load-with-autogenerated-pk_adm_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_03/load-with-autogenerated-pk_adm_03.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_04/load-with-autogenerated-pk_adm_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_04/load-with-autogenerated-pk_adm_04.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_04/load-with-autogenerated-pk_adm_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_adm_04/load-with-autogenerated-pk_adm_04.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_01/load-with-autogenerated-pk_csv_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_01/load-with-autogenerated-pk_csv_01.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_01/load-with-autogenerated-pk_csv_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_01/load-with-autogenerated-pk_csv_01.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_02/load-with-autogenerated-pk_csv_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_02/load-with-autogenerated-pk_csv_02.3.ast
index b24adbb..71f5bd2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_02/load-with-autogenerated-pk_csv_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_csv_02/load-with-autogenerated-pk_csv_02.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_txt_01/load-with-autogenerated-pk_txt_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_txt_01/load-with-autogenerated-pk_txt_01.3.ast
index 2ebe2b1..165cb7b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_txt_01/load-with-autogenerated-pk_txt_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-autogenerated-pk_txt_01/load-with-autogenerated-pk_txt_01.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index-open/load-with-index-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index-open/load-with-index-open.3.ast
index 0356975..c26b29e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index-open/load-with-index-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index-open/load-with-index-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItemOpen]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index/load-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index/load-with-index.3.ast
index c349fe6..ad91508 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index/load-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-index/load-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index-open/load-with-ngram-index-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index-open/load-with-ngram-index-open.3.ast
index 7389afc..857c325 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index-open/load-with-ngram-index-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index-open/load-with-ngram-index-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index/load-with-ngram-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index/load-with-ngram-index.3.ast
index 84b8cef..a4f5e43 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index/load-with-ngram-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-ngram-index/load-with-ngram-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index-open/load-with-rtree-index-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index-open/load-with-rtree-index-open.3.ast
index b0fdb23..7418fdc4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index-open/load-with-rtree-index-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index-open/load-with-rtree-index-open.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyDataOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index/load-with-rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index/load-with-rtree-index.3.ast
index a8fb7a2..f814183 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index/load-with-rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-rtree-index/load-with-rtree-index.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index-open/load-with-word-index-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index-open/load-with-word-index-open.3.ast
index 51bda44..05ff6d0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index-open/load-with-word-index-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index-open/load-with-word-index-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index/load-with-word-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index/load-with-word-index.3.ast
index fe9235b..1795965 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index/load-with-word-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/load-with-word-index/load-with-word-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o-recursive/opentype-c2o-recursive.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o-recursive/opentype-c2o-recursive.3.ast
index 3f55eea..5082316 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o-recursive/opentype-c2o-recursive.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o-recursive/opentype-c2o-recursive.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds2]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o/opentype-c2o.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o/opentype-c2o.3.ast
index 3f55eea..5082316 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o/opentype-c2o.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-c2o/opentype-c2o.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds2]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-closed-optional/opentype-closed-optional.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-closed-optional/opentype-closed-optional.3.ast
index 1c6d7f0..e739a6d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-closed-optional/opentype-closed-optional.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-closed-optional/opentype-closed-optional.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert/opentype-insert.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert/opentype-insert.3.ast
index 575c62e..28f0e23 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert/opentype-insert.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert/opentype-insert.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert2/opentype-insert2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert2/opentype-insert2.3.ast
index b3df586..00bab71 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert2/opentype-insert2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-insert2/opentype-insert2.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-noexpand/opentype-noexpand.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-noexpand/opentype-noexpand.3.ast
index 1c6d7f0..e739a6d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-noexpand/opentype-noexpand.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-noexpand/opentype-noexpand.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c-recursive/opentype-o2c-recursive.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c-recursive/opentype-o2c-recursive.3.ast
index 3f55eea..5082316 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c-recursive/opentype-o2c-recursive.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c-recursive/opentype-o2c-recursive.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds2]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c/opentype-o2c.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c/opentype-o2c.3.ast
index 3f55eea..5082316 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c/opentype-o2c.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2c/opentype-o2c.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds2]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2o/opentype-o2o.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2o/opentype-o2o.3.ast
index 3f55eea..5082316 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2o/opentype-o2o.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/opentype-o2o/opentype-o2o.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds2]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue205/query-issue205.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue205/query-issue205.3.ast
index 32645d1..ef7410a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue205/query-issue205.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue205/query-issue205.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Employees]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue288/query-issue288.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue288/query-issue288.5.ast
index ca4fdf8..c812590 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue288/query-issue288.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue288/query-issue288.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineID2]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue382/query-issue382.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue382/query-issue382.3.ast
index 4c6695e..19bebeb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue382/query-issue382.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue382/query-issue382.3.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [HandbookUsers]
       ]
-      AS
-      Variable [ Name=$h ]
+      AS Variable [ Name=$h ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue433/query-issue433.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue433/query-issue433.3.ast
index b3b58e3..76f5ca2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue433/query-issue433.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/query-issue433/query-issue433.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [myDataset]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
index 62e3142..c6ad91b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-open/scan-delete-btree-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-open/scan-delete-btree-secondary-index-open.5.ast
index 5a910b0..0001d01 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-open/scan-delete-btree-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-btree-secondary-index-open/scan-delete-btree-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomersOpen]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
index 84b8cef..a4f5e43 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-open/scan-delete-inverted-index-ngram-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-open/scan-delete-inverted-index-ngram-secondary-index-open.5.ast
index 7389afc..857c325 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-open/scan-delete-inverted-index-ngram-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index-open/scan-delete-inverted-index-ngram-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
index 84b8cef..a4f5e43 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
index fe9235b..1795965 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-open/scan-delete-inverted-index-word-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-open/scan-delete-inverted-index-word-secondary-index-open.5.ast
index 51bda44..05ff6d0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-open/scan-delete-inverted-index-word-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index-open/scan-delete-inverted-index-word-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
index fe9235b..1795965 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
index a8fb7a2..f814183 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-open/scan-delete-rtree-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-open/scan-delete-rtree-secondary-index-open.5.ast
index b0fdb23..7418fdc4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-open/scan-delete-rtree-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index-open/scan-delete-rtree-secondary-index-open.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyDataOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
index a8fb7a2..f814183 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
index 8c70eff..cb88c12 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomersMini]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-open/scan-insert-btree-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-open/scan-insert-btree-secondary-index-open.5.ast
index 5a910b0..0001d01 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-open/scan-insert-btree-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-btree-secondary-index-open/scan-insert-btree-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomersOpen]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
index 77097fc..ea6fcbe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP1]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-open/scan-insert-inverted-index-ngram-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-open/scan-insert-inverted-index-ngram-secondary-index-open.5.ast
index 7389afc..857c325 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-open/scan-insert-inverted-index-ngram-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index-open/scan-insert-inverted-index-ngram-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
index 77097fc..ea6fcbe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP1]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
index 94fc6b6..30b0e34 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP1]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-open/scan-insert-inverted-index-word-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-open/scan-insert-inverted-index-word-secondary-index-open.5.ast
index 51bda44..05ff6d0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-open/scan-insert-inverted-index-word-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index-open/scan-insert-inverted-index-word-secondary-index-open.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
index 94fc6b6..30b0e34 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP1]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
index 68e4dd8..bc7ec93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-open/scan-insert-rtree-secondary-index-open.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-open/scan-insert-rtree-secondary-index-open.5.ast
index 274b4d4..9451ea3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-open/scan-insert-rtree-secondary-index-open.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index-open/scan-insert-rtree-secondary-index-open.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyOpenData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
index 68e4dd8..bc7ec93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-constant-merge-policy/using-constant-merge-policy.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-constant-merge-policy/using-constant-merge-policy.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-constant-merge-policy/using-constant-merge-policy.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-constant-merge-policy/using-constant-merge-policy.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-correlated-prefix-merge-policy/using-correlated-prefix-merge-policy.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-correlated-prefix-merge-policy/using-correlated-prefix-merge-policy.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-correlated-prefix-merge-policy/using-correlated-prefix-merge-policy.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-correlated-prefix-merge-policy/using-correlated-prefix-merge-policy.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-no-merge-policy/using-no-merge-policy.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-no-merge-policy/using-no-merge-policy.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-no-merge-policy/using-no-merge-policy.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-no-merge-policy/using-no-merge-policy.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-prefix-merge-policy/using-prefix-merge-policy.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-prefix-merge-policy/using-prefix-merge-policy.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-prefix-merge-policy/using-prefix-merge-policy.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/dml/using-prefix-merge-policy/using-prefix-merge-policy.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_01/q_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_01/q_01.3.ast
index fa27a43..0718a9d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_01/q_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_01/q_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Emp]
   ]
-  AS
-  Variable [ Name=$e ]
+  AS Variable [ Name=$e ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_02/q_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_02/q_02.3.ast
index 9de5b2c..0e5b3d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_02/q_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/employee/q_02/q_02.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Emp]
   ]
-  AS
-  Variable [ Name=$e ]
+  AS Variable [ Name=$e ]
 ]
 Let Variable [ Name=$m ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
index ab69658..927f192 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -70,8 +69,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin/leftouterjoin.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin/leftouterjoin.3.ast
index cec3efa..016d582 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin/leftouterjoin.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/leftouterjoin/leftouterjoin.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -74,8 +73,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rc-format/rc-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rc-format/rc-format.3.ast
index 7604fff..ed64b71 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rc-format/rc-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rc-format/rc-format.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [EmployeeDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rtree-index/rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rtree-index/rtree-index.3.ast
index 1302b5e..7c356c1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rtree-index/rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/rtree-index/rtree-index.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/sequence-format/sequence-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/sequence-format/sequence-format.3.ast
index 7604fff..ed64b71 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/sequence-format/sequence-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/sequence-format/sequence-format.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [EmployeeDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/text-format/text-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/text-format/text-format.3.ast
index cfb6277..e5649c0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/text-format/text-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/external-indexing/text-format/text-format.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [EmployeeDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/equality-predicate/equality-predicate.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/equality-predicate/equality-predicate.5.ast
index 4788c3e..d23ef11 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/equality-predicate/equality-predicate.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/equality-predicate/equality-predicate.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-btree/insert-with-secondary-btree.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-btree/insert-with-secondary-btree.5.ast
index 5241dbb..0a178d8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-btree/insert-with-secondary-btree.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-btree/insert-with-secondary-btree.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages2]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-ngram/insert-with-secondary-inverted-ngram.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-ngram/insert-with-secondary-inverted-ngram.5.ast
index 17c5ce7..55a463c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-ngram/insert-with-secondary-inverted-ngram.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-ngram/insert-with-secondary-inverted-ngram.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-word/insert-with-secondary-inverted-word.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-word/insert-with-secondary-inverted-word.5.ast
index 1ab98c4..6d330a8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-word/insert-with-secondary-inverted-word.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-inverted-word/insert-with-secondary-inverted-word.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-rtree/insert-with-secondary-rtree.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-rtree/insert-with-secondary-rtree.5.ast
index 647e3a8..b83a453 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-rtree/insert-with-secondary-rtree.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert-with-secondary-rtree/insert-with-secondary-rtree.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert/insert.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert/insert.5.ast
index 52fc41d..286161b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert/insert.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/insert/insert.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages2]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-btree/load-with-secondary-btree.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-btree/load-with-secondary-btree.5.ast
index 5071e45..60a0e7b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-btree/load-with-secondary-btree.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-btree/load-with-secondary-btree.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-ngram/load-with-secondary-inverted-ngram.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-ngram/load-with-secondary-inverted-ngram.5.ast
index 17c5ce7..55a463c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-ngram/load-with-secondary-inverted-ngram.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-ngram/load-with-secondary-inverted-ngram.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-word/load-with-secondary-inverted-word.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-word/load-with-secondary-inverted-word.5.ast
index 1ab98c4..6d330a8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-word/load-with-secondary-inverted-word.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-inverted-word/load-with-secondary-inverted-word.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-rtree/load-with-secondary-rtree.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-rtree/load-with-secondary-rtree.5.ast
index 647e3a8..b83a453 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-rtree/load-with-secondary-rtree.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load-with-secondary-rtree/load-with-secondary-rtree.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load/load.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load/load.5.ast
index aa484cd..d2ac504 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load/load.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/filters/load/load.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.3.ast
index 633ec16..d9d1e6e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.3.ast
@@ -47,8 +47,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Orderby
           FieldAccessor [
@@ -63,8 +62,7 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Groupby
       Variable [ Name=$partkey ]
@@ -73,25 +71,21 @@
         Variable [ Name=$i ]
         Field=l_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$i ]
-       AS i
+        i:=Variable [ Name=$i ]
       )
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   FieldAccessor [
     Variable [ Name=$gen0 ]
     Field=i
   ]
-  AS
-  Variable [ Name=$j ]
-  AT
-  Variable [ Name=$p ]
+  AS Variable [ Name=$j ]
+ AT 
+Variable [ Name=$p ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.4.ast
index 633ec16..d9d1e6e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.4.ast
@@ -47,8 +47,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Orderby
           FieldAccessor [
@@ -63,8 +62,7 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Groupby
       Variable [ Name=$partkey ]
@@ -73,25 +71,21 @@
         Variable [ Name=$i ]
         Field=l_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$i ]
-       AS i
+        i:=Variable [ Name=$i ]
       )
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   FieldAccessor [
     Variable [ Name=$gen0 ]
     Field=i
   ]
-  AS
-  Variable [ Name=$j ]
-  AT
-  Variable [ Name=$p ]
+  AS Variable [ Name=$j ]
+ AT 
+Variable [ Name=$p ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.5.ast
index 633ec16..d9d1e6e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at00/at00.5.ast
@@ -47,8 +47,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Orderby
           FieldAccessor [
@@ -63,8 +62,7 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Groupby
       Variable [ Name=$partkey ]
@@ -73,25 +71,21 @@
         Variable [ Name=$i ]
         Field=l_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$i ]
-       AS i
+        i:=Variable [ Name=$i ]
       )
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   FieldAccessor [
     Variable [ Name=$gen0 ]
     Field=i
   ]
-  AS
-  Variable [ Name=$j ]
-  AT
-  Variable [ Name=$p ]
+  AS Variable [ Name=$j ]
+ AT 
+Variable [ Name=$p ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at01/at01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at01/at01.3.ast
index 770fb09..04f0c6d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at01/at01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at01/at01.3.ast
@@ -32,8 +32,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$fb ]
+      AS Variable [ Name=$fb ]
     ]
     Orderby
       FieldAccessor [
@@ -43,8 +42,7 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$i ]
-  AT
-  Variable [ Name=$p ]
+  AS Variable [ Name=$i ]
+ AT 
+Variable [ Name=$p ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at02/at02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at02/at02.3.ast
index fc41a3b..afd1f81 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at02/at02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at02/at02.3.ast
@@ -33,8 +33,7 @@
           Variable [ Name=$ii ]
           ]
           FROM [            Variable [ Name=$m ]
-            AS
-            Variable [ Name=$ii ]
+            AS Variable [ Name=$ii ]
           ]
           Orderby
             FieldAccessor [
@@ -44,10 +43,9 @@
             ASC
 
         )
-        AS
-        Variable [ Name=$a ]
-        AT
-        Variable [ Name=$p ]
+        AS Variable [ Name=$a ]
+ AT 
+Variable [ Name=$p ]
       ]
     )
   )
@@ -56,14 +54,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$u ]
+  AS Variable [ Name=$u ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
@@ -84,13 +80,10 @@
     Variable [ Name=$u ]
     Field=id
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$m ]
-   AS m
-  Variable [ Name=$u ]
-   AS u
+    m:=Variable [ Name=$m ]
+    u:=Variable [ Name=$u ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at03/at03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at03/at03.3.ast
index d7e0dcc..426052c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at03/at03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at03/at03.3.ast
@@ -33,8 +33,7 @@
           Variable [ Name=$i1 ]
           ]
           FROM [            Variable [ Name=$i ]
-            AS
-            Variable [ Name=$i1 ]
+            AS Variable [ Name=$i1 ]
           ]
           Orderby
             FieldAccessor [
@@ -44,10 +43,9 @@
             ASC
 
         )
-        AS
-        Variable [ Name=$f ]
-        AT
-        Variable [ Name=$ip ]
+        AS Variable [ Name=$f ]
+ AT 
+Variable [ Name=$ip ]
       ]
     )
   )
@@ -60,12 +58,10 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$fb ]
+      AS Variable [ Name=$fb ]
     ]
   )
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$fus ]
@@ -76,11 +72,9 @@
       Field=user-since
     ]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at04/at04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at04/at04.3.ast
index 5286e9c..1efc828 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at04/at04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at04/at04.3.ast
@@ -33,8 +33,7 @@
           Variable [ Name=$i1 ]
           ]
           FROM [            Variable [ Name=$i ]
-            AS
-            Variable [ Name=$i1 ]
+            AS Variable [ Name=$i1 ]
           ]
           Orderby
             FieldAccessor [
@@ -44,10 +43,9 @@
             ASC
 
         )
-        AS
-        Variable [ Name=$f ]
-        AT
-        Variable [ Name=$ip ]
+        AS Variable [ Name=$f ]
+ AT 
+Variable [ Name=$ip ]
       ]
     )
   )
@@ -60,12 +58,10 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
     ]
   )
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$ckey ]
@@ -74,11 +70,9 @@
     Variable [ Name=$i ]
     Field=o_custkey
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at05/at05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at05/at05.3.ast
index 87ce40d..12ed5fa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at05/at05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at05/at05.3.ast
@@ -26,8 +26,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
@@ -45,11 +44,9 @@
         Variable [ Name=$x ]
         Field=o_custkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$x ]
-       AS x
+        x:=Variable [ Name=$x ]
       )
 
     Let Variable [ Name=$xx ]
@@ -82,8 +79,7 @@
             Variable [ Name=$xxx ]
             ]
             FROM [              Variable [ Name=$x ]
-              AS
-              Variable [ Name=$xxx ]
+              AS Variable [ Name=$xxx ]
             ]
             Orderby
               FieldAccessor [
@@ -93,10 +89,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$y ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$y ]
+ AT 
+Variable [ Name=$i ]
         ]
       )
     Orderby
@@ -104,13 +99,11 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   FieldAccessor [
     Variable [ Name=$gen0 ]
     Field=xx
   ]
-  AS
-  Variable [ Name=$si ]
+  AS Variable [ Name=$si ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at06/at06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at06/at06.3.ast
index 6fdea10..dfeebe0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at06/at06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/at06/at06.3.ast
@@ -55,8 +55,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Orderby
           FieldAccessor [
@@ -66,8 +65,7 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Groupby
       Variable [ Name=$partkey ]
@@ -76,16 +74,13 @@
         Variable [ Name=$i ]
         Field=l_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$i ]
-       AS i
+        i:=Variable [ Name=$i ]
       )
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   (
     SELECT ELEMENT [
@@ -95,8 +90,7 @@
         Variable [ Name=$gen0 ]
         Field=i
       ]
-      AS
-      Variable [ Name=$ii ]
+      AS Variable [ Name=$ii ]
     ]
     Orderby
       FieldAccessor [
@@ -106,10 +100,9 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$j ]
-  AT
-  Variable [ Name=$p ]
+  AS Variable [ Name=$j ]
+ AT 
+Variable [ Name=$p ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/query-issue550/query-issue550.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/query-issue550/query-issue550.3.ast
index 7cf52e9..f8988ad 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/query-issue550/query-issue550.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/flwor/query-issue550/query-issue550.3.ast
@@ -162,16 +162,14 @@
       Variable [ Name=$srec ]
       ]
       FROM [        Variable [ Name=$s ]
-        AS
-        Variable [ Name=$srec ]
+        AS Variable [ Name=$srec ]
       ]
     )
   )
 ]
 ]
 FROM [  Variable [ Name=$sample ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ]
 Groupby
   Variable [ Name=$u ]
@@ -180,12 +178,9 @@
     Variable [ Name=$s ]
     Field=uid
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$s ]
-   AS s
-  Variable [ Name=$sample ]
-   AS sample
+    s:=Variable [ Name=$s ]
+    sample:=Variable [ Name=$sample ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_1/dblp-1_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_1/dblp-1_1.3.ast
index 0e2d5bf..9097792 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_1/dblp-1_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_1/dblp-1_1.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
     FieldAccessor [
@@ -16,20 +15,16 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tokenGroupped ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$paper ]
-   AS paper
+    token:=Variable [ Name=$token ]
+    paper:=Variable [ Name=$paper ]
   )
 
 Orderby
@@ -42,8 +37,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1.1/dblp-1_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1.1/dblp-1_2.3.ast
index 191068a..892dfd4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1.1/dblp-1_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1.1/dblp-1_2.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
     FieldAccessor [
@@ -16,8 +15,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Let Variable [ Name=$id ]
   :=
@@ -29,15 +27,11 @@
   Variable [ Name=$tokenGroupped ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$id ]
-   AS id
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$paper ]
-   AS paper
+    id:=Variable [ Name=$id ]
+    token:=Variable [ Name=$token ]
+    paper:=Variable [ Name=$paper ]
   )
 
 Orderby
@@ -50,8 +44,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1/dblp-1_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1/dblp-1_2.3.ast
index 191068a..892dfd4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1/dblp-1_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2.1/dblp-1_2.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
     FieldAccessor [
@@ -16,8 +15,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Let Variable [ Name=$id ]
   :=
@@ -29,15 +27,11 @@
   Variable [ Name=$tokenGroupped ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$id ]
-   AS id
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$paper ]
-   AS paper
+    id:=Variable [ Name=$id ]
+    token:=Variable [ Name=$token ]
+    paper:=Variable [ Name=$paper ]
   )
 
 Orderby
@@ -50,8 +44,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2/dblp-1_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2/dblp-1_2.3.ast
index fa9ab5f..fa2eda4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2/dblp-1_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-1_2/dblp-1_2.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
     FieldAccessor [
@@ -16,8 +15,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Let Variable [ Name=$paperid ]
   :=
@@ -29,15 +27,11 @@
   Variable [ Name=$tokenGroupped ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$paperid ]
-   AS paperid
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$paper ]
-   AS paper
+    paperid:=Variable [ Name=$paperid ]
+    token:=Variable [ Name=$token ]
+    paper:=Variable [ Name=$paper ]
   )
 
 Orderby
@@ -50,8 +44,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.1_5.3.1/dblp-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.1_5.3.1/dblp-2.3.ast
index 315a705..51bc1bc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.1_5.3.1/dblp-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.1_5.3.1/dblp-2.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -38,8 +37,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -67,8 +65,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -77,8 +74,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -86,8 +82,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -99,27 +94,17 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -132,8 +117,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -142,10 +126,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.2/dblp-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.2/dblp-2.3.ast
index 44a7325..83b5471 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.2/dblp-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2.2/dblp-2.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -40,8 +39,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -72,14 +70,12 @@
     ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TOKENSRANKEDADM]
       ]
-      AS
-      Variable [ Name=$tokenRanked ]
+      AS Variable [ Name=$tokenRanked ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_1/dblp-2_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_1/dblp-2_1.3.ast
index 8ea2c98..44c07b7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_1/dblp-2_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_1/dblp-2_1.3.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$tokensDBLP ]
   :=
@@ -36,8 +35,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -46,8 +44,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -55,24 +52,18 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Groupby
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -85,8 +76,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -95,10 +85,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_2/dblp-2_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_2/dblp-2_2.3.ast
index bdec735..b6090dd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_2/dblp-2_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_2/dblp-2_2.3.ast
@@ -21,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$tokensDBLP ]
   :=
@@ -36,8 +35,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -46,8 +44,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -55,8 +52,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -68,19 +64,13 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -93,8 +83,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -103,10 +92,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_3/dblp-2_3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_3/dblp-2_3.3.ast
index 3faf452..c6dba16 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_3/dblp-2_3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_3/dblp-2_3.3.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -39,8 +38,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -49,8 +47,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -58,8 +55,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -71,21 +67,14 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -98,8 +87,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -108,10 +96,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_4/dblp-2_4.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_4/dblp-2_4.3.ast
index 6f085fc..3b1ded7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_4/dblp-2_4.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_4/dblp-2_4.3.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -42,8 +41,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -52,8 +50,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -61,8 +58,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -74,23 +70,15 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -103,8 +91,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -113,10 +100,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.1/dblp-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.1/dblp-2_5.3.ast
index 460fb11..42edfe5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.1/dblp-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.1/dblp-2_5.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -52,8 +51,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -62,8 +60,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -71,8 +68,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -84,25 +80,16 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -115,8 +102,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -125,10 +111,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.2/dblp-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.2/dblp-2_5.3.ast
index 460fb11..42edfe5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.2/dblp-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.2/dblp-2_5.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -52,8 +51,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -62,8 +60,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -71,8 +68,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -84,25 +80,16 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -115,8 +102,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -125,10 +111,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3.1/dblp-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3.1/dblp-2_5.3.ast
index 460fb11..42edfe5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3.1/dblp-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3.1/dblp-2_5.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -52,8 +51,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -62,8 +60,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -71,8 +68,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -84,25 +80,16 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -115,8 +102,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -125,10 +111,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3/dblp-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3/dblp-2_5.3.ast
index 460fb11..42edfe5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3/dblp-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5.3/dblp-2_5.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -52,8 +51,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -62,8 +60,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -71,8 +68,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -84,25 +80,16 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -115,8 +102,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -125,10 +111,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5/dblp-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5/dblp-2_5.3.ast
index 4a9aac3..2fc6e0f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5/dblp-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-2_5/dblp-2_5.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -52,8 +51,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -62,8 +60,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -71,8 +68,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -84,25 +80,16 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -115,8 +102,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -125,10 +111,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.1/dblp-3_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.1/dblp-3_1.3.ast
index 7201110..9257b1e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.1/dblp-3_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.1/dblp-3_1.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperLeft ]
+      AS Variable [ Name=$paperLeft ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -64,14 +63,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenLeft ]
+      AS Variable [ Name=$prefixTokenLeft ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperRight ]
+      AS Variable [ Name=$paperRight ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -85,8 +82,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenRight ]
+      AS Variable [ Name=$prefixTokenRight ]
     ]
     Let Variable [ Name=$lenLeft ]
       :=
@@ -110,8 +106,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -120,8 +115,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -129,32 +123,22 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -167,8 +151,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -177,10 +160,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -215,8 +197,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -225,8 +206,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -234,36 +214,24 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenRight ]
-               AS lenRight
-              Variable [ Name=$tokensLeft ]
-               AS tokensLeft
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenRight:=Variable [ Name=$lenRight ]
+                tokensLeft:=Variable [ Name=$tokensLeft ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -276,8 +244,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -286,10 +253,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -353,44 +319,31 @@
         Variable [ Name=$paperRight ]
         Field=id
       ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensRight ]
-       AS tokensRight
-      Variable [ Name=$lenRight ]
-       AS lenRight
-      Variable [ Name=$tokensLeft ]
-       AS tokensLeft
-      Variable [ Name=$lenLeft ]
-       AS lenLeft
-      Variable [ Name=$prefixTokenRight ]
-       AS prefixTokenRight
-      Variable [ Name=$paperRight ]
-       AS paperRight
-      Variable [ Name=$prefixTokenLeft ]
-       AS prefixTokenLeft
-      Variable [ Name=$paperLeft ]
-       AS paperLeft
+        sim:=Variable [ Name=$sim ]
+        tokensRight:=Variable [ Name=$tokensRight ]
+        lenRight:=Variable [ Name=$lenRight ]
+        tokensLeft:=Variable [ Name=$tokensLeft ]
+        lenLeft:=Variable [ Name=$lenLeft ]
+        prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+        paperRight:=Variable [ Name=$paperRight ]
+        prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+        paperLeft:=Variable [ Name=$paperLeft ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperLeft ]
+  AS Variable [ Name=$paperLeft ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperRight ]
+  AS Variable [ Name=$paperRight ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.2/dblp-3_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.2/dblp-3_1.3.ast
index 7201110..9257b1e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.2/dblp-3_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1.2/dblp-3_1.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperLeft ]
+      AS Variable [ Name=$paperLeft ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -64,14 +63,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenLeft ]
+      AS Variable [ Name=$prefixTokenLeft ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperRight ]
+      AS Variable [ Name=$paperRight ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -85,8 +82,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenRight ]
+      AS Variable [ Name=$prefixTokenRight ]
     ]
     Let Variable [ Name=$lenLeft ]
       :=
@@ -110,8 +106,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -120,8 +115,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -129,32 +123,22 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -167,8 +151,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -177,10 +160,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -215,8 +197,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -225,8 +206,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -234,36 +214,24 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenRight ]
-               AS lenRight
-              Variable [ Name=$tokensLeft ]
-               AS tokensLeft
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenRight:=Variable [ Name=$lenRight ]
+                tokensLeft:=Variable [ Name=$tokensLeft ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -276,8 +244,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -286,10 +253,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -353,44 +319,31 @@
         Variable [ Name=$paperRight ]
         Field=id
       ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensRight ]
-       AS tokensRight
-      Variable [ Name=$lenRight ]
-       AS lenRight
-      Variable [ Name=$tokensLeft ]
-       AS tokensLeft
-      Variable [ Name=$lenLeft ]
-       AS lenLeft
-      Variable [ Name=$prefixTokenRight ]
-       AS prefixTokenRight
-      Variable [ Name=$paperRight ]
-       AS paperRight
-      Variable [ Name=$prefixTokenLeft ]
-       AS prefixTokenLeft
-      Variable [ Name=$paperLeft ]
-       AS paperLeft
+        sim:=Variable [ Name=$sim ]
+        tokensRight:=Variable [ Name=$tokensRight ]
+        lenRight:=Variable [ Name=$lenRight ]
+        tokensLeft:=Variable [ Name=$tokensLeft ]
+        lenLeft:=Variable [ Name=$lenLeft ]
+        prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+        paperRight:=Variable [ Name=$paperRight ]
+        prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+        paperLeft:=Variable [ Name=$paperLeft ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperLeft ]
+  AS Variable [ Name=$paperLeft ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperRight ]
+  AS Variable [ Name=$paperRight ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1/dblp-3_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1/dblp-3_1.3.ast
index 77b36ad..c9d8570 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1/dblp-3_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-3_1/dblp-3_1.3.ast
@@ -26,14 +26,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperLeft ]
+  AS Variable [ Name=$paperLeft ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperRight ]
+  AS Variable [ Name=$paperRight ]
 ,
   (
     SELECT ELEMENT [
@@ -61,8 +59,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperLeft ]
+      AS Variable [ Name=$paperLeft ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -76,14 +73,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenLeft ]
+      AS Variable [ Name=$prefixTokenLeft ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperRight ]
+      AS Variable [ Name=$paperRight ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -97,8 +92,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenRight ]
+      AS Variable [ Name=$prefixTokenRight ]
     ]
     Let Variable [ Name=$lenLeft ]
       :=
@@ -122,8 +116,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -132,8 +125,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -141,32 +133,22 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -179,8 +161,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -189,10 +170,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -227,8 +207,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -237,8 +216,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -246,36 +224,24 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenRight ]
-               AS lenRight
-              Variable [ Name=$tokensLeft ]
-               AS tokensLeft
-              Variable [ Name=$lenLeft ]
-               AS lenLeft
-              Variable [ Name=$prefixTokenRight ]
-               AS prefixTokenRight
-              Variable [ Name=$paperRight ]
-               AS paperRight
-              Variable [ Name=$prefixTokenLeft ]
-               AS prefixTokenLeft
-              Variable [ Name=$paperLeft ]
-               AS paperLeft
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenRight:=Variable [ Name=$lenRight ]
+                tokensLeft:=Variable [ Name=$tokensLeft ]
+                lenLeft:=Variable [ Name=$lenLeft ]
+                prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+                paperRight:=Variable [ Name=$paperRight ]
+                prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+                paperLeft:=Variable [ Name=$paperLeft ]
               )
 
             Orderby
@@ -288,8 +254,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -298,10 +263,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -365,32 +329,21 @@
         Variable [ Name=$paperRight ]
         Field=id
       ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensRight ]
-       AS tokensRight
-      Variable [ Name=$lenRight ]
-       AS lenRight
-      Variable [ Name=$tokensLeft ]
-       AS tokensLeft
-      Variable [ Name=$lenLeft ]
-       AS lenLeft
-      Variable [ Name=$prefixTokenRight ]
-       AS prefixTokenRight
-      Variable [ Name=$paperRight ]
-       AS paperRight
-      Variable [ Name=$prefixTokenLeft ]
-       AS prefixTokenLeft
-      Variable [ Name=$paperLeft ]
-       AS paperLeft
+        sim:=Variable [ Name=$sim ]
+        tokensRight:=Variable [ Name=$tokensRight ]
+        lenRight:=Variable [ Name=$lenRight ]
+        tokensLeft:=Variable [ Name=$tokensLeft ]
+        lenLeft:=Variable [ Name=$lenLeft ]
+        prefixTokenRight:=Variable [ Name=$prefixTokenRight ]
+        paperRight:=Variable [ Name=$paperRight ]
+        prefixTokenLeft:=Variable [ Name=$prefixTokenLeft ]
+        paperLeft:=Variable [ Name=$paperLeft ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_1/dblp-aqlplus_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_1/dblp-aqlplus_1.3.ast
index 22d651f..175ec78 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_1/dblp-aqlplus_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_1/dblp-aqlplus_1.3.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp ]
+  AS Variable [ Name=$dblp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp2 ]
+  AS Variable [ Name=$dblp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_2/dblp-aqlplus_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_2/dblp-aqlplus_2.3.ast
index cc6eb88..6afb337 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_2/dblp-aqlplus_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-aqlplus_2/dblp-aqlplus_2.3.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp ]
+  AS Variable [ Name=$dblp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp2 ]
+  AS Variable [ Name=$dblp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_1/dblp-csx-2_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_1/dblp-csx-2_1.3.ast
index 4936e10..2c59ebb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_1/dblp-csx-2_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_1/dblp-csx-2_1.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$tokensDBLP ]
   :=
@@ -81,8 +77,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -91,8 +86,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -100,30 +94,21 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Groupby
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -136,8 +121,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -146,10 +130,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -174,8 +157,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -184,8 +166,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -193,32 +174,22 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Groupby
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -231,8 +202,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -241,10 +211,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -311,23 +280,15 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_2/dblp-csx-2_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_2/dblp-csx-2_2.3.ast
index 4093d2a..7818c84 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_2/dblp-csx-2_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_2/dblp-csx-2_2.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$tokensDBLP ]
   :=
@@ -81,8 +77,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -91,8 +86,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -100,8 +94,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -113,25 +106,16 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -144,8 +128,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -154,10 +137,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -182,8 +164,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -192,8 +173,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -201,8 +181,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -214,27 +193,17 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -247,8 +216,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -257,10 +225,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -327,23 +294,15 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_3/dblp-csx-2_3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_3/dblp-csx-2_3.3.ast
index 1276294..df4f32a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_3/dblp-csx-2_3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_3/dblp-csx-2_3.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -87,8 +83,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -97,8 +92,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -106,8 +100,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -119,27 +112,17 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -152,8 +135,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -162,10 +144,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -196,8 +177,7 @@
           Field=title
         ]
       ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -206,8 +186,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -215,8 +194,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -228,31 +206,19 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -265,8 +231,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -275,10 +240,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -339,27 +303,17 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_4/dblp-csx-2_4.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_4/dblp-csx-2_4.3.ast
index 5358e91..ce7906f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_4/dblp-csx-2_4.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_4/dblp-csx-2_4.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -90,8 +86,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -100,8 +95,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -109,8 +103,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -122,29 +115,18 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -157,8 +139,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -167,10 +148,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -204,8 +184,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -214,8 +193,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -223,8 +201,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -236,35 +213,21 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -277,8 +240,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -287,10 +249,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -341,31 +302,19 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.1/dblp-csx-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.1/dblp-csx-2_5.3.ast
index c925dea..e7f281d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.1/dblp-csx-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.1/dblp-csx-2_5.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -95,8 +91,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -105,8 +100,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -114,8 +108,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -127,31 +120,19 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -164,8 +145,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -174,10 +154,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -216,8 +195,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -226,8 +204,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -235,8 +212,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -248,39 +224,23 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -293,8 +253,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -303,10 +262,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -350,35 +308,21 @@
   Variable [ Name=$idCSX ]
   :=
   Variable [ Name=$idCSX ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$lenCSX ]
-   AS lenCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$lenDBLP ]
-   AS lenDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    lenCSX:=Variable [ Name=$lenCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    lenDBLP:=Variable [ Name=$lenDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.2/dblp-csx-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.2/dblp-csx-2_5.3.ast
index c925dea..e7f281d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.2/dblp-csx-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.2/dblp-csx-2_5.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -95,8 +91,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -105,8 +100,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -114,8 +108,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -127,31 +120,19 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -164,8 +145,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -174,10 +154,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -216,8 +195,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -226,8 +204,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -235,8 +212,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -248,39 +224,23 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -293,8 +253,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -303,10 +262,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -350,35 +308,21 @@
   Variable [ Name=$idCSX ]
   :=
   Variable [ Name=$idCSX ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$lenCSX ]
-   AS lenCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$lenDBLP ]
-   AS lenDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    lenCSX:=Variable [ Name=$lenCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    lenDBLP:=Variable [ Name=$lenDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3.1/dblp-csx-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3.1/dblp-csx-2_5.3.ast
index 8ddc7b1..3ffdad1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3.1/dblp-csx-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3.1/dblp-csx-2_5.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -95,8 +91,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -105,8 +100,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -114,8 +108,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -127,31 +120,19 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -164,8 +145,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -174,10 +154,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -216,8 +195,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -226,8 +204,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -235,8 +212,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -248,39 +224,23 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -293,8 +253,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -303,10 +262,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -353,35 +311,21 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$lenCSX ]
-   AS lenCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$lenDBLP ]
-   AS lenDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    lenCSX:=Variable [ Name=$lenCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    lenDBLP:=Variable [ Name=$lenDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3/dblp-csx-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3/dblp-csx-2_5.3.ast
index c925dea..e7f281d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3/dblp-csx-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5.3/dblp-csx-2_5.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -95,8 +91,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -105,8 +100,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -114,8 +108,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -127,31 +120,19 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -164,8 +145,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -174,10 +154,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -216,8 +195,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -226,8 +204,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -235,8 +212,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -248,39 +224,23 @@
           Variable [ Name=$tokenGrouped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -293,8 +253,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -303,10 +262,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -350,35 +308,21 @@
   Variable [ Name=$idCSX ]
   :=
   Variable [ Name=$idCSX ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$lenCSX ]
-   AS lenCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$lenDBLP ]
-   AS lenDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    lenCSX:=Variable [ Name=$lenCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    lenDBLP:=Variable [ Name=$lenDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5/dblp-csx-2_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5/dblp-csx-2_5.3.ast
index 8ddc7b1..3ffdad1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5/dblp-csx-2_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-2_5/dblp-csx-2_5.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -43,14 +42,12 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenDBLP ]
+  AS Variable [ Name=$prefixTokenDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   FunctionCall fuzzyjoin.subset-collection@3[
     FunctionCall Metadata.dataset@1[
@@ -66,8 +63,7 @@
       LiteralExpr [FLOAT] [0.5]
     ]
   ]
-  AS
-  Variable [ Name=$prefixTokenCSX ]
+  AS Variable [ Name=$prefixTokenCSX ]
 ]
 Let Variable [ Name=$idDBLP ]
   :=
@@ -95,8 +91,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedDBLP ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -105,8 +100,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -114,8 +108,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -127,31 +120,19 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -164,8 +145,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -174,10 +154,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -216,8 +195,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$tokensUnrankedCSX ]
-      AS
-      Variable [ Name=$tokenUnranked ]
+      AS Variable [ Name=$tokenUnranked ]
 ,
       (
         SELECT ELEMENT [
@@ -226,8 +204,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paper ]
+          AS Variable [ Name=$paper ]
 ,
           FunctionCall fuzzyjoin.counthashed-word-tokens@1[
             FieldAccessor [
@@ -235,8 +212,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$token ]
+          AS Variable [ Name=$token ]
         ]
         Let Variable [ Name=$id ]
           :=
@@ -248,39 +224,23 @@
           Variable [ Name=$tokenGroupped ]
           :=
           Variable [ Name=$token ]
-          GROUP AS
-          Variable [ Name=#3 ]
+          GROUP AS Variable [ Name=#3 ]
           (
-          Variable [ Name=$id ]
-           AS id
-          Variable [ Name=$token ]
-           AS token
-          Variable [ Name=$paper ]
-           AS paper
-          Variable [ Name=$tokenUnranked ]
-           AS tokenUnranked
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            id:=Variable [ Name=$id ]
+            token:=Variable [ Name=$token ]
+            paper:=Variable [ Name=$paper ]
+            tokenUnranked:=Variable [ Name=$tokenUnranked ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
         Orderby
@@ -293,8 +253,7 @@
               ]
               ]
               FROM [                Variable [ Name=#3 ]
-                AS
-                Variable [ Name=#4 ]
+                AS Variable [ Name=#4 ]
               ]
             )
           ]
@@ -303,10 +262,9 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$tokenRanked ]
-      AT
-      Variable [ Name=$i ]
+      AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -353,35 +311,21 @@
   Variable [ Name=$sim ]
   :=
   Variable [ Name=$sim ]
-  GROUP AS
-  Variable [ Name=#5 ]
+  GROUP AS Variable [ Name=#5 ]
   (
-  Variable [ Name=$sim ]
-   AS sim
-  Variable [ Name=$tokensCSX ]
-   AS tokensCSX
-  Variable [ Name=$lenCSX ]
-   AS lenCSX
-  Variable [ Name=$tokensUnrankedCSX ]
-   AS tokensUnrankedCSX
-  Variable [ Name=$idCSX ]
-   AS idCSX
-  Variable [ Name=$tokensDBLP ]
-   AS tokensDBLP
-  Variable [ Name=$lenDBLP ]
-   AS lenDBLP
-  Variable [ Name=$tokensUnrankedDBLP ]
-   AS tokensUnrankedDBLP
-  Variable [ Name=$idDBLP ]
-   AS idDBLP
-  Variable [ Name=$prefixTokenCSX ]
-   AS prefixTokenCSX
-  Variable [ Name=$paperCSX ]
-   AS paperCSX
-  Variable [ Name=$prefixTokenDBLP ]
-   AS prefixTokenDBLP
-  Variable [ Name=$paperDBLP ]
-   AS paperDBLP
+    sim:=Variable [ Name=$sim ]
+    tokensCSX:=Variable [ Name=$tokensCSX ]
+    lenCSX:=Variable [ Name=$lenCSX ]
+    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+    idCSX:=Variable [ Name=$idCSX ]
+    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+    lenDBLP:=Variable [ Name=$lenDBLP ]
+    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+    idDBLP:=Variable [ Name=$idDBLP ]
+    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+    paperCSX:=Variable [ Name=$paperCSX ]
+    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+    paperDBLP:=Variable [ Name=$paperDBLP ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_1/dblp-csx-3_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_1/dblp-csx-3_1.3.ast
index 74480b0..92e8c06 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_1/dblp-csx-3_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_1/dblp-csx-3_1.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$tokensDBLP ]
       :=
@@ -104,8 +100,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -114,8 +109,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -123,30 +117,21 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -159,8 +144,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -169,10 +153,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -197,8 +180,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -207,8 +189,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -216,32 +197,22 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Groupby
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -254,8 +225,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -264,10 +234,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -334,40 +303,29 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_2/dblp-csx-3_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_2/dblp-csx-3_2.3.ast
index 4ee78c2..efbad42 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_2/dblp-csx-3_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_2/dblp-csx-3_2.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$tokensDBLP ]
       :=
@@ -104,8 +100,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -114,8 +109,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -123,8 +117,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -136,25 +129,16 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -167,8 +151,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -177,10 +160,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -205,8 +187,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -215,8 +196,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -224,8 +204,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -237,27 +216,17 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -270,8 +239,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -280,10 +248,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -350,40 +317,29 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_3/dblp-csx-3_3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_3/dblp-csx-3_3.3.ast
index f22a4e2..2deaaf5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_3/dblp-csx-3_3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_3/dblp-csx-3_3.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -110,8 +106,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -120,8 +115,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -129,8 +123,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -142,27 +135,17 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -175,8 +158,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -185,10 +167,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -219,8 +200,7 @@
               Field=title
             ]
           ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -229,8 +209,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -238,8 +217,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -251,31 +229,19 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -288,8 +254,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -298,10 +263,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -362,44 +326,31 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_4/dblp-csx-3_4.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_4/dblp-csx-3_4.3.ast
index 4e9103a..3dcfb48 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_4/dblp-csx-3_4.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_4/dblp-csx-3_4.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -113,8 +109,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -123,8 +118,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -132,8 +126,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -145,29 +138,18 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -180,8 +162,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -190,10 +171,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -227,8 +207,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -237,8 +216,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -246,8 +224,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -259,35 +236,21 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -300,8 +263,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -310,10 +272,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -364,48 +325,33 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.1/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.1/dblp-csx-3_5.3.ast
index 7f6a679..3588a30 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.1/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.1/dblp-csx-3_5.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -118,8 +114,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -128,8 +123,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -137,8 +131,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -150,31 +143,19 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -187,8 +168,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -197,10 +177,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -239,8 +218,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -249,8 +227,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -258,8 +235,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -271,39 +247,23 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenCSX ]
-               AS lenCSX
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenCSX:=Variable [ Name=$lenCSX ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -316,8 +276,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -326,10 +285,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -373,52 +331,35 @@
       Variable [ Name=$idCSX ]
       :=
       Variable [ Name=$idCSX ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$lenCSX ]
-       AS lenCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$lenDBLP ]
-       AS lenDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        lenCSX:=Variable [ Name=$lenCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        lenDBLP:=Variable [ Name=$lenDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.2/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.2/dblp-csx-3_5.3.ast
index 7f6a679..3588a30 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.2/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.2/dblp-csx-3_5.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -118,8 +114,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -128,8 +123,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -137,8 +131,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -150,31 +143,19 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -187,8 +168,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -197,10 +177,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -239,8 +218,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -249,8 +227,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -258,8 +235,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -271,39 +247,23 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenCSX ]
-               AS lenCSX
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenCSX:=Variable [ Name=$lenCSX ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -316,8 +276,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -326,10 +285,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -373,52 +331,35 @@
       Variable [ Name=$idCSX ]
       :=
       Variable [ Name=$idCSX ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$lenCSX ]
-       AS lenCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$lenDBLP ]
-       AS lenDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        lenCSX:=Variable [ Name=$lenCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        lenDBLP:=Variable [ Name=$lenDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3.1/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3.1/dblp-csx-3_5.3.ast
index 7f6a679..3588a30 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3.1/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3.1/dblp-csx-3_5.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -118,8 +114,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -128,8 +123,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -137,8 +131,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -150,31 +143,19 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -187,8 +168,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -197,10 +177,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -239,8 +218,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -249,8 +227,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -258,8 +235,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -271,39 +247,23 @@
               Variable [ Name=$tokenGrouped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenCSX ]
-               AS lenCSX
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenCSX:=Variable [ Name=$lenCSX ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -316,8 +276,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -326,10 +285,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -373,52 +331,35 @@
       Variable [ Name=$idCSX ]
       :=
       Variable [ Name=$idCSX ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$lenCSX ]
-       AS lenCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$lenDBLP ]
-       AS lenDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        lenCSX:=Variable [ Name=$lenCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        lenDBLP:=Variable [ Name=$lenDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3/dblp-csx-3_5.3.ast
index 4838a20..adcea8c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.3/dblp-csx-3_5.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -118,8 +114,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -128,8 +123,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -137,8 +131,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -150,31 +143,19 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -187,8 +168,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -197,10 +177,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -239,8 +218,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -249,8 +227,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -258,8 +235,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -271,39 +247,23 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenCSX ]
-               AS lenCSX
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenCSX:=Variable [ Name=$lenCSX ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -316,8 +276,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -326,10 +285,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -376,52 +334,35 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$lenCSX ]
-       AS lenCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$lenDBLP ]
-       AS lenDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        lenCSX:=Variable [ Name=$lenCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        lenDBLP:=Variable [ Name=$lenDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4.1/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4.1/dblp-csx-3_5.3.ast
index 3f963eb..18723de 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4.1/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4.1/dblp-csx-3_5.3.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   (
     SELECT ELEMENT [
@@ -69,8 +68,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       (
         SELECT ELEMENT [
@@ -98,8 +96,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paperDBLP ]
+          AS Variable [ Name=$paperDBLP ]
 ,
           FunctionCall fuzzyjoin.subset-collection@3[
             FunctionCall Metadata.dataset@1[
@@ -115,14 +112,12 @@
               LiteralExpr [FLOAT] [0.5]
             ]
           ]
-          AS
-          Variable [ Name=$prefixTokenDBLP ]
+          AS Variable [ Name=$prefixTokenDBLP ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [CSX]
           ]
-          AS
-          Variable [ Name=$paperCSX ]
+          AS Variable [ Name=$paperCSX ]
 ,
           FunctionCall fuzzyjoin.subset-collection@3[
             FunctionCall Metadata.dataset@1[
@@ -138,8 +133,7 @@
               LiteralExpr [FLOAT] [0.5]
             ]
           ]
-          AS
-          Variable [ Name=$prefixTokenCSX ]
+          AS Variable [ Name=$prefixTokenCSX ]
         ]
         Let Variable [ Name=$idDBLP ]
           :=
@@ -167,8 +161,7 @@
             Variable [ Name=$i ]
             ]
             FROM [              Variable [ Name=$tokensUnrankedDBLP ]
-              AS
-              Variable [ Name=$tokenUnranked ]
+              AS Variable [ Name=$tokenUnranked ]
 ,
               (
                 SELECT ELEMENT [
@@ -177,8 +170,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [DBLP]
                   ]
-                  AS
-                  Variable [ Name=$paper ]
+                  AS Variable [ Name=$paper ]
 ,
                   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                     FieldAccessor [
@@ -186,8 +178,7 @@
                       Field=title
                     ]
                   ]
-                  AS
-                  Variable [ Name=$token ]
+                  AS Variable [ Name=$token ]
                 ]
                 Let Variable [ Name=$id ]
                   :=
@@ -199,31 +190,19 @@
                   Variable [ Name=$tokenGrouped ]
                   :=
                   Variable [ Name=$token ]
-                  GROUP AS
-                  Variable [ Name=#1 ]
+                  GROUP AS Variable [ Name=#1 ]
                   (
-                  Variable [ Name=$id ]
-                   AS id
-                  Variable [ Name=$token ]
-                   AS token
-                  Variable [ Name=$paper ]
-                   AS paper
-                  Variable [ Name=$tokenUnranked ]
-                   AS tokenUnranked
-                  Variable [ Name=$lenDBLP ]
-                   AS lenDBLP
-                  Variable [ Name=$tokensUnrankedDBLP ]
-                   AS tokensUnrankedDBLP
-                  Variable [ Name=$idDBLP ]
-                   AS idDBLP
-                  Variable [ Name=$prefixTokenCSX ]
-                   AS prefixTokenCSX
-                  Variable [ Name=$paperCSX ]
-                   AS paperCSX
-                  Variable [ Name=$prefixTokenDBLP ]
-                   AS prefixTokenDBLP
-                  Variable [ Name=$paperDBLP ]
-                   AS paperDBLP
+                    id:=Variable [ Name=$id ]
+                    token:=Variable [ Name=$token ]
+                    paper:=Variable [ Name=$paper ]
+                    tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                    lenDBLP:=Variable [ Name=$lenDBLP ]
+                    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                    idDBLP:=Variable [ Name=$idDBLP ]
+                    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                    paperCSX:=Variable [ Name=$paperCSX ]
+                    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                    paperDBLP:=Variable [ Name=$paperDBLP ]
                   )
 
                 Orderby
@@ -236,8 +215,7 @@
                       ]
                       ]
                       FROM [                        Variable [ Name=#1 ]
-                        AS
-                        Variable [ Name=#2 ]
+                        AS Variable [ Name=#2 ]
                       ]
                     )
                   ]
@@ -246,10 +224,9 @@
                   ASC
 
               )
-              AS
-              Variable [ Name=$tokenRanked ]
-              AT
-              Variable [ Name=$i ]
+              AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
             ]
             Where
               OperatorExpr [
@@ -288,8 +265,7 @@
             Variable [ Name=$i ]
             ]
             FROM [              Variable [ Name=$tokensUnrankedCSX ]
-              AS
-              Variable [ Name=$tokenUnranked ]
+              AS Variable [ Name=$tokenUnranked ]
 ,
               (
                 SELECT ELEMENT [
@@ -298,8 +274,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [DBLP]
                   ]
-                  AS
-                  Variable [ Name=$paper ]
+                  AS Variable [ Name=$paper ]
 ,
                   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                     FieldAccessor [
@@ -307,8 +282,7 @@
                       Field=title
                     ]
                   ]
-                  AS
-                  Variable [ Name=$token ]
+                  AS Variable [ Name=$token ]
                 ]
                 Let Variable [ Name=$id ]
                   :=
@@ -320,39 +294,23 @@
                   Variable [ Name=$tokenGrouped ]
                   :=
                   Variable [ Name=$token ]
-                  GROUP AS
-                  Variable [ Name=#3 ]
+                  GROUP AS Variable [ Name=#3 ]
                   (
-                  Variable [ Name=$id ]
-                   AS id
-                  Variable [ Name=$token ]
-                   AS token
-                  Variable [ Name=$paper ]
-                   AS paper
-                  Variable [ Name=$tokenUnranked ]
-                   AS tokenUnranked
-                  Variable [ Name=$lenCSX ]
-                   AS lenCSX
-                  Variable [ Name=$tokensUnrankedCSX ]
-                   AS tokensUnrankedCSX
-                  Variable [ Name=$idCSX ]
-                   AS idCSX
-                  Variable [ Name=$tokensDBLP ]
-                   AS tokensDBLP
-                  Variable [ Name=$lenDBLP ]
-                   AS lenDBLP
-                  Variable [ Name=$tokensUnrankedDBLP ]
-                   AS tokensUnrankedDBLP
-                  Variable [ Name=$idDBLP ]
-                   AS idDBLP
-                  Variable [ Name=$prefixTokenCSX ]
-                   AS prefixTokenCSX
-                  Variable [ Name=$paperCSX ]
-                   AS paperCSX
-                  Variable [ Name=$prefixTokenDBLP ]
-                   AS prefixTokenDBLP
-                  Variable [ Name=$paperDBLP ]
-                   AS paperDBLP
+                    id:=Variable [ Name=$id ]
+                    token:=Variable [ Name=$token ]
+                    paper:=Variable [ Name=$paper ]
+                    tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                    lenCSX:=Variable [ Name=$lenCSX ]
+                    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                    idCSX:=Variable [ Name=$idCSX ]
+                    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                    lenDBLP:=Variable [ Name=$lenDBLP ]
+                    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                    idDBLP:=Variable [ Name=$idDBLP ]
+                    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                    paperCSX:=Variable [ Name=$paperCSX ]
+                    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                    paperDBLP:=Variable [ Name=$paperDBLP ]
                   )
 
                 Orderby
@@ -365,8 +323,7 @@
                       ]
                       ]
                       FROM [                        Variable [ Name=#3 ]
-                        AS
-                        Variable [ Name=#4 ]
+                        AS Variable [ Name=#4 ]
                       ]
                     )
                   ]
@@ -375,10 +332,9 @@
                   ASC
 
               )
-              AS
-              Variable [ Name=$tokenRanked ]
-              AT
-              Variable [ Name=$i ]
+              AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
             ]
             Where
               OperatorExpr [
@@ -422,40 +378,25 @@
           Variable [ Name=$idCSX ]
           :=
           Variable [ Name=$idCSX ]
-          GROUP AS
-          Variable [ Name=#5 ]
+          GROUP AS Variable [ Name=#5 ]
           (
-          Variable [ Name=$sim ]
-           AS sim
-          Variable [ Name=$tokensCSX ]
-           AS tokensCSX
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            sim:=Variable [ Name=$sim ]
+            tokensCSX:=Variable [ Name=$tokensCSX ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
       )
-      AS
-      Variable [ Name=$ridpair ]
+      AS Variable [ Name=$ridpair ]
     ]
     Where
       OperatorExpr [
@@ -470,8 +411,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$paperDBLPridpair ]
+  AS Variable [ Name=$paperDBLPridpair ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4/dblp-csx-3_5.3.ast
index a9c8ad6..39615a7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5.4/dblp-csx-3_5.3.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ,
   (
     SELECT ELEMENT [
@@ -69,8 +68,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       (
         SELECT ELEMENT [
@@ -98,8 +96,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [DBLP]
           ]
-          AS
-          Variable [ Name=$paperDBLP ]
+          AS Variable [ Name=$paperDBLP ]
 ,
           FunctionCall fuzzyjoin.subset-collection@3[
             FunctionCall Metadata.dataset@1[
@@ -115,14 +112,12 @@
               LiteralExpr [FLOAT] [0.5]
             ]
           ]
-          AS
-          Variable [ Name=$prefixTokenDBLP ]
+          AS Variable [ Name=$prefixTokenDBLP ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [CSX]
           ]
-          AS
-          Variable [ Name=$paperCSX ]
+          AS Variable [ Name=$paperCSX ]
 ,
           FunctionCall fuzzyjoin.subset-collection@3[
             FunctionCall Metadata.dataset@1[
@@ -138,8 +133,7 @@
               LiteralExpr [FLOAT] [0.5]
             ]
           ]
-          AS
-          Variable [ Name=$prefixTokenCSX ]
+          AS Variable [ Name=$prefixTokenCSX ]
         ]
         Let Variable [ Name=$idDBLP ]
           :=
@@ -167,8 +161,7 @@
             Variable [ Name=$i ]
             ]
             FROM [              Variable [ Name=$tokensUnrankedDBLP ]
-              AS
-              Variable [ Name=$tokenUnranked ]
+              AS Variable [ Name=$tokenUnranked ]
 ,
               (
                 SELECT ELEMENT [
@@ -177,8 +170,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [DBLP]
                   ]
-                  AS
-                  Variable [ Name=$paper ]
+                  AS Variable [ Name=$paper ]
 ,
                   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                     FieldAccessor [
@@ -186,8 +178,7 @@
                       Field=title
                     ]
                   ]
-                  AS
-                  Variable [ Name=$token ]
+                  AS Variable [ Name=$token ]
                 ]
                 Let Variable [ Name=$id ]
                   :=
@@ -199,31 +190,19 @@
                   Variable [ Name=$tokenGrouped ]
                   :=
                   Variable [ Name=$token ]
-                  GROUP AS
-                  Variable [ Name=#1 ]
+                  GROUP AS Variable [ Name=#1 ]
                   (
-                  Variable [ Name=$id ]
-                   AS id
-                  Variable [ Name=$token ]
-                   AS token
-                  Variable [ Name=$paper ]
-                   AS paper
-                  Variable [ Name=$tokenUnranked ]
-                   AS tokenUnranked
-                  Variable [ Name=$lenDBLP ]
-                   AS lenDBLP
-                  Variable [ Name=$tokensUnrankedDBLP ]
-                   AS tokensUnrankedDBLP
-                  Variable [ Name=$idDBLP ]
-                   AS idDBLP
-                  Variable [ Name=$prefixTokenCSX ]
-                   AS prefixTokenCSX
-                  Variable [ Name=$paperCSX ]
-                   AS paperCSX
-                  Variable [ Name=$prefixTokenDBLP ]
-                   AS prefixTokenDBLP
-                  Variable [ Name=$paperDBLP ]
-                   AS paperDBLP
+                    id:=Variable [ Name=$id ]
+                    token:=Variable [ Name=$token ]
+                    paper:=Variable [ Name=$paper ]
+                    tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                    lenDBLP:=Variable [ Name=$lenDBLP ]
+                    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                    idDBLP:=Variable [ Name=$idDBLP ]
+                    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                    paperCSX:=Variable [ Name=$paperCSX ]
+                    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                    paperDBLP:=Variable [ Name=$paperDBLP ]
                   )
 
                 Orderby
@@ -236,8 +215,7 @@
                       ]
                       ]
                       FROM [                        Variable [ Name=#1 ]
-                        AS
-                        Variable [ Name=#2 ]
+                        AS Variable [ Name=#2 ]
                       ]
                     )
                   ]
@@ -246,10 +224,9 @@
                   ASC
 
               )
-              AS
-              Variable [ Name=$tokenRanked ]
-              AT
-              Variable [ Name=$i ]
+              AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
             ]
             Where
               OperatorExpr [
@@ -288,8 +265,7 @@
             Variable [ Name=$i ]
             ]
             FROM [              Variable [ Name=$tokensUnrankedCSX ]
-              AS
-              Variable [ Name=$tokenUnranked ]
+              AS Variable [ Name=$tokenUnranked ]
 ,
               (
                 SELECT ELEMENT [
@@ -298,8 +274,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [DBLP]
                   ]
-                  AS
-                  Variable [ Name=$paper ]
+                  AS Variable [ Name=$paper ]
 ,
                   FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                     FieldAccessor [
@@ -307,8 +282,7 @@
                       Field=title
                     ]
                   ]
-                  AS
-                  Variable [ Name=$token ]
+                  AS Variable [ Name=$token ]
                 ]
                 Let Variable [ Name=$id ]
                   :=
@@ -320,39 +294,23 @@
                   Variable [ Name=$tokenGrouped ]
                   :=
                   Variable [ Name=$token ]
-                  GROUP AS
-                  Variable [ Name=#3 ]
+                  GROUP AS Variable [ Name=#3 ]
                   (
-                  Variable [ Name=$id ]
-                   AS id
-                  Variable [ Name=$token ]
-                   AS token
-                  Variable [ Name=$paper ]
-                   AS paper
-                  Variable [ Name=$tokenUnranked ]
-                   AS tokenUnranked
-                  Variable [ Name=$lenCSX ]
-                   AS lenCSX
-                  Variable [ Name=$tokensUnrankedCSX ]
-                   AS tokensUnrankedCSX
-                  Variable [ Name=$idCSX ]
-                   AS idCSX
-                  Variable [ Name=$tokensDBLP ]
-                   AS tokensDBLP
-                  Variable [ Name=$lenDBLP ]
-                   AS lenDBLP
-                  Variable [ Name=$tokensUnrankedDBLP ]
-                   AS tokensUnrankedDBLP
-                  Variable [ Name=$idDBLP ]
-                   AS idDBLP
-                  Variable [ Name=$prefixTokenCSX ]
-                   AS prefixTokenCSX
-                  Variable [ Name=$paperCSX ]
-                   AS paperCSX
-                  Variable [ Name=$prefixTokenDBLP ]
-                   AS prefixTokenDBLP
-                  Variable [ Name=$paperDBLP ]
-                   AS paperDBLP
+                    id:=Variable [ Name=$id ]
+                    token:=Variable [ Name=$token ]
+                    paper:=Variable [ Name=$paper ]
+                    tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                    lenCSX:=Variable [ Name=$lenCSX ]
+                    tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                    idCSX:=Variable [ Name=$idCSX ]
+                    tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                    lenDBLP:=Variable [ Name=$lenDBLP ]
+                    tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                    idDBLP:=Variable [ Name=$idDBLP ]
+                    prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                    paperCSX:=Variable [ Name=$paperCSX ]
+                    prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                    paperDBLP:=Variable [ Name=$paperDBLP ]
                   )
 
                 Orderby
@@ -365,8 +323,7 @@
                       ]
                       ]
                       FROM [                        Variable [ Name=#3 ]
-                        AS
-                        Variable [ Name=#4 ]
+                        AS Variable [ Name=#4 ]
                       ]
                     )
                   ]
@@ -375,10 +332,9 @@
                   ASC
 
               )
-              AS
-              Variable [ Name=$tokenRanked ]
-              AT
-              Variable [ Name=$i ]
+              AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
             ]
             Where
               OperatorExpr [
@@ -422,40 +378,25 @@
           Variable [ Name=$idCSX ]
           :=
           Variable [ Name=$idCSX ]
-          GROUP AS
-          Variable [ Name=#5 ]
+          GROUP AS Variable [ Name=#5 ]
           (
-          Variable [ Name=$sim ]
-           AS sim
-          Variable [ Name=$tokensCSX ]
-           AS tokensCSX
-          Variable [ Name=$lenCSX ]
-           AS lenCSX
-          Variable [ Name=$tokensUnrankedCSX ]
-           AS tokensUnrankedCSX
-          Variable [ Name=$idCSX ]
-           AS idCSX
-          Variable [ Name=$tokensDBLP ]
-           AS tokensDBLP
-          Variable [ Name=$lenDBLP ]
-           AS lenDBLP
-          Variable [ Name=$tokensUnrankedDBLP ]
-           AS tokensUnrankedDBLP
-          Variable [ Name=$idDBLP ]
-           AS idDBLP
-          Variable [ Name=$prefixTokenCSX ]
-           AS prefixTokenCSX
-          Variable [ Name=$paperCSX ]
-           AS paperCSX
-          Variable [ Name=$prefixTokenDBLP ]
-           AS prefixTokenDBLP
-          Variable [ Name=$paperDBLP ]
-           AS paperDBLP
+            sim:=Variable [ Name=$sim ]
+            tokensCSX:=Variable [ Name=$tokensCSX ]
+            lenCSX:=Variable [ Name=$lenCSX ]
+            tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+            idCSX:=Variable [ Name=$idCSX ]
+            tokensDBLP:=Variable [ Name=$tokensDBLP ]
+            lenDBLP:=Variable [ Name=$lenDBLP ]
+            tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+            idDBLP:=Variable [ Name=$idDBLP ]
+            prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+            paperCSX:=Variable [ Name=$paperCSX ]
+            prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+            paperDBLP:=Variable [ Name=$paperDBLP ]
           )
 
       )
-      AS
-      Variable [ Name=$ridpair ]
+      AS Variable [ Name=$ridpair ]
     ]
     Where
       OperatorExpr [
@@ -470,8 +411,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$paperDBLPridpair ]
+  AS Variable [ Name=$paperDBLPridpair ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5/dblp-csx-3_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5/dblp-csx-3_5.3.ast
index 4838a20..adcea8c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5/dblp-csx-3_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-3_5/dblp-csx-3_5.3.ast
@@ -49,8 +49,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [DBLP]
       ]
-      AS
-      Variable [ Name=$paperDBLP ]
+      AS Variable [ Name=$paperDBLP ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -66,14 +65,12 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenDBLP ]
+      AS Variable [ Name=$prefixTokenDBLP ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [CSX]
       ]
-      AS
-      Variable [ Name=$paperCSX ]
+      AS Variable [ Name=$paperCSX ]
 ,
       FunctionCall fuzzyjoin.subset-collection@3[
         FunctionCall Metadata.dataset@1[
@@ -89,8 +86,7 @@
           LiteralExpr [FLOAT] [0.5]
         ]
       ]
-      AS
-      Variable [ Name=$prefixTokenCSX ]
+      AS Variable [ Name=$prefixTokenCSX ]
     ]
     Let Variable [ Name=$idDBLP ]
       :=
@@ -118,8 +114,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedDBLP ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -128,8 +123,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -137,8 +131,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -150,31 +143,19 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#1 ]
+              GROUP AS Variable [ Name=#1 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -187,8 +168,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#1 ]
-                    AS
-                    Variable [ Name=#2 ]
+                    AS Variable [ Name=#2 ]
                   ]
                 )
               ]
@@ -197,10 +177,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -239,8 +218,7 @@
         Variable [ Name=$i ]
         ]
         FROM [          Variable [ Name=$tokensUnrankedCSX ]
-          AS
-          Variable [ Name=$tokenUnranked ]
+          AS Variable [ Name=$tokenUnranked ]
 ,
           (
             SELECT ELEMENT [
@@ -249,8 +227,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [DBLP]
               ]
-              AS
-              Variable [ Name=$paper ]
+              AS Variable [ Name=$paper ]
 ,
               FunctionCall fuzzyjoin.counthashed-word-tokens@1[
                 FieldAccessor [
@@ -258,8 +235,7 @@
                   Field=title
                 ]
               ]
-              AS
-              Variable [ Name=$token ]
+              AS Variable [ Name=$token ]
             ]
             Let Variable [ Name=$id ]
               :=
@@ -271,39 +247,23 @@
               Variable [ Name=$tokenGroupped ]
               :=
               Variable [ Name=$token ]
-              GROUP AS
-              Variable [ Name=#3 ]
+              GROUP AS Variable [ Name=#3 ]
               (
-              Variable [ Name=$id ]
-               AS id
-              Variable [ Name=$token ]
-               AS token
-              Variable [ Name=$paper ]
-               AS paper
-              Variable [ Name=$tokenUnranked ]
-               AS tokenUnranked
-              Variable [ Name=$lenCSX ]
-               AS lenCSX
-              Variable [ Name=$tokensUnrankedCSX ]
-               AS tokensUnrankedCSX
-              Variable [ Name=$idCSX ]
-               AS idCSX
-              Variable [ Name=$tokensDBLP ]
-               AS tokensDBLP
-              Variable [ Name=$lenDBLP ]
-               AS lenDBLP
-              Variable [ Name=$tokensUnrankedDBLP ]
-               AS tokensUnrankedDBLP
-              Variable [ Name=$idDBLP ]
-               AS idDBLP
-              Variable [ Name=$prefixTokenCSX ]
-               AS prefixTokenCSX
-              Variable [ Name=$paperCSX ]
-               AS paperCSX
-              Variable [ Name=$prefixTokenDBLP ]
-               AS prefixTokenDBLP
-              Variable [ Name=$paperDBLP ]
-               AS paperDBLP
+                id:=Variable [ Name=$id ]
+                token:=Variable [ Name=$token ]
+                paper:=Variable [ Name=$paper ]
+                tokenUnranked:=Variable [ Name=$tokenUnranked ]
+                lenCSX:=Variable [ Name=$lenCSX ]
+                tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+                idCSX:=Variable [ Name=$idCSX ]
+                tokensDBLP:=Variable [ Name=$tokensDBLP ]
+                lenDBLP:=Variable [ Name=$lenDBLP ]
+                tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+                idDBLP:=Variable [ Name=$idDBLP ]
+                prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+                paperCSX:=Variable [ Name=$paperCSX ]
+                prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+                paperDBLP:=Variable [ Name=$paperDBLP ]
               )
 
             Orderby
@@ -316,8 +276,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=#3 ]
-                    AS
-                    Variable [ Name=#4 ]
+                    AS Variable [ Name=#4 ]
                   ]
                 )
               ]
@@ -326,10 +285,9 @@
               ASC
 
           )
-          AS
-          Variable [ Name=$tokenRanked ]
-          AT
-          Variable [ Name=$i ]
+          AS Variable [ Name=$tokenRanked ]
+ AT 
+Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -376,52 +334,35 @@
       Variable [ Name=$sim ]
       :=
       Variable [ Name=$sim ]
-      GROUP AS
-      Variable [ Name=#5 ]
+      GROUP AS Variable [ Name=#5 ]
       (
-      Variable [ Name=$sim ]
-       AS sim
-      Variable [ Name=$tokensCSX ]
-       AS tokensCSX
-      Variable [ Name=$lenCSX ]
-       AS lenCSX
-      Variable [ Name=$tokensUnrankedCSX ]
-       AS tokensUnrankedCSX
-      Variable [ Name=$idCSX ]
-       AS idCSX
-      Variable [ Name=$tokensDBLP ]
-       AS tokensDBLP
-      Variable [ Name=$lenDBLP ]
-       AS lenDBLP
-      Variable [ Name=$tokensUnrankedDBLP ]
-       AS tokensUnrankedDBLP
-      Variable [ Name=$idDBLP ]
-       AS idDBLP
-      Variable [ Name=$prefixTokenCSX ]
-       AS prefixTokenCSX
-      Variable [ Name=$paperCSX ]
-       AS paperCSX
-      Variable [ Name=$prefixTokenDBLP ]
-       AS prefixTokenDBLP
-      Variable [ Name=$paperDBLP ]
-       AS paperDBLP
+        sim:=Variable [ Name=$sim ]
+        tokensCSX:=Variable [ Name=$tokensCSX ]
+        lenCSX:=Variable [ Name=$lenCSX ]
+        tokensUnrankedCSX:=Variable [ Name=$tokensUnrankedCSX ]
+        idCSX:=Variable [ Name=$idCSX ]
+        tokensDBLP:=Variable [ Name=$tokensDBLP ]
+        lenDBLP:=Variable [ Name=$lenDBLP ]
+        tokensUnrankedDBLP:=Variable [ Name=$tokensUnrankedDBLP ]
+        idDBLP:=Variable [ Name=$idDBLP ]
+        prefixTokenCSX:=Variable [ Name=$prefixTokenCSX ]
+        paperCSX:=Variable [ Name=$paperCSX ]
+        prefixTokenDBLP:=Variable [ Name=$prefixTokenDBLP ]
+        paperDBLP:=Variable [ Name=$paperDBLP ]
       )
 
   )
-  AS
-  Variable [ Name=$ridpair ]
+  AS Variable [ Name=$ridpair ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paperDBLP ]
+  AS Variable [ Name=$paperDBLP ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$paperCSX ]
+  AS Variable [ Name=$paperCSX ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_1/dblp-csx-aqlplus_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_1/dblp-csx-aqlplus_1.3.ast
index 9db8681..bd34da8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_1/dblp-csx-aqlplus_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_1/dblp-csx-aqlplus_1.3.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_2/dblp-csx-aqlplus_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_2/dblp-csx-aqlplus_2.3.ast
index 93d2c73..c0af204 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_2/dblp-csx-aqlplus_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_2/dblp-csx-aqlplus_2.3.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$csx ]
+  AS Variable [ Name=$csx ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp ]
+  AS Variable [ Name=$dblp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_3/dblp-csx-aqlplus_3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_3/dblp-csx-aqlplus_3.3.ast
index 7c9153c..847cd77 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_3/dblp-csx-aqlplus_3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-aqlplus_3/dblp-csx-aqlplus_3.3.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp ]
+  AS Variable [ Name=$dblp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$csx ]
+  AS Variable [ Name=$csx ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-dblp-aqlplus_1/dblp-csx-dblp-aqlplus_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-dblp-aqlplus_1/dblp-csx-dblp-aqlplus_1.3.ast
index 07128d6..736c5fe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-dblp-aqlplus_1/dblp-csx-dblp-aqlplus_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-csx-dblp-aqlplus_1/dblp-csx-dblp-aqlplus_1.3.ast
@@ -23,20 +23,17 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp ]
+  AS Variable [ Name=$dblp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$csx ]
+  AS Variable [ Name=$csx ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$dblp2 ]
+  AS Variable [ Name=$dblp2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-lookup_1/dblp-lookup_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-lookup_1/dblp-lookup_1.3.ast
index 94dc5a1..24c6240 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-lookup_1/dblp-lookup_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/dblp-lookup_1/dblp-lookup_1.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/opentype/opentype.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/opentype/opentype.3.ast
index 6882190..f00ce81 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/opentype/opentype.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/fuzzyjoin/opentype/opentype.3.ast
@@ -22,8 +22,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -65,8 +64,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_02/hdfs_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_02/hdfs_02.3.ast
index bad0fa1..9d99609 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_02/hdfs_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_02/hdfs_02.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TextDataset]
   ]
-  AS
-  Variable [ Name=$line ]
+  AS Variable [ Name=$line ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -39,20 +37,16 @@
       Field=content
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$line ]
-   AS line
+    token:=Variable [ Name=$token ]
+    line:=Variable [ Name=$line ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_03/hdfs_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_03/hdfs_03.3.ast
index bad0fa1..9d99609 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_03/hdfs_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_03/hdfs_03.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TextDataset]
   ]
-  AS
-  Variable [ Name=$line ]
+  AS Variable [ Name=$line ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -39,20 +37,16 @@
       Field=content
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$line ]
-   AS line
+    token:=Variable [ Name=$token ]
+    line:=Variable [ Name=$line ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_shortcircuit/hdfs_shortcircuit.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_shortcircuit/hdfs_shortcircuit.3.ast
index bad0fa1..9d99609 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_shortcircuit/hdfs_shortcircuit.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/hdfs_shortcircuit/hdfs_shortcircuit.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TextDataset]
   ]
-  AS
-  Variable [ Name=$line ]
+  AS Variable [ Name=$line ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -39,20 +37,16 @@
       Field=content
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$line ]
-   AS line
+    token:=Variable [ Name=$token ]
+    line:=Variable [ Name=$line ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/issue_245_hdfs/issue_245_hdfs.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/issue_245_hdfs/issue_245_hdfs.3.ast
index fe2529e..4192035 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/issue_245_hdfs/issue_245_hdfs.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hdfs/issue_245_hdfs/issue_245_hdfs.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TextDataset]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_5/issue_251_dataset_hint_5.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_5/issue_251_dataset_hint_5.3.ast
index aa83cd5..639c43e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_5/issue_251_dataset_hint_5.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_5/issue_251_dataset_hint_5.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPadm]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_6/issue_251_dataset_hint_6.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_6/issue_251_dataset_hint_6.3.ast
index bad0fa1..9d99609 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_6/issue_251_dataset_hint_6.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_6/issue_251_dataset_hint_6.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TextDataset]
   ]
-  AS
-  Variable [ Name=$line ]
+  AS Variable [ Name=$line ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -39,20 +37,16 @@
       Field=content
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$line ]
-   AS line
+    token:=Variable [ Name=$token ]
+    line:=Variable [ Name=$line ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_7/issue_251_dataset_hint_7.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_7/issue_251_dataset_hint_7.3.ast
index e22a30b..538363d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_7/issue_251_dataset_hint_7.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/hints/issue_251_dataset_hint_7/issue_251_dataset_hint_7.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Tweets]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-index-nested-loop-join/btree-index-nested-loop-join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-index-nested-loop-join/btree-index-nested-loop-join.3.ast
index 1babbbd..08c152d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-index-nested-loop-join/btree-index-nested-loop-join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-index-nested-loop-join/btree-index-nested-loop-join.3.ast
@@ -9,20 +9,17 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$tu ]
+  AS Variable [ Name=$tu ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$tm ]
+  AS Variable [ Name=$tm ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [results]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
index 8f8841d..006962c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_01/btree-secondary-equi-join_01.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_01/btree-secondary-equi-join_01.4.ast
index 89d28a6..81f6fce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_01/btree-secondary-equi-join_01.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_01/btree-secondary-equi-join_01.4.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_02/btree-secondary-equi-join_02.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_02/btree-secondary-equi-join_02.4.ast
index 89d28a6..81f6fce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_02/btree-secondary-equi-join_02.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_02/btree-secondary-equi-join_02.4.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_03/btree-secondary-equi-join_03.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_03/btree-secondary-equi-join_03.4.ast
index 89d28a6..81f6fce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_03/btree-secondary-equi-join_03.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/btree-secondary-equi-join_03/btree-secondary-equi-join_03.4.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
index 3d59488..76b9409 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
index cec3efa..016d582 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -74,8 +73,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
index 3d039dd..9da7404 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
index 8369538..d6bac72 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
@@ -51,8 +51,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -100,8 +99,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
index 14df5eb..d62445c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
@@ -51,8 +51,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -100,8 +99,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
index ab69658..927f192 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -70,8 +69,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
index b7f77df..947d145 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -84,8 +83,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.3.ast
index 4aa57c8..c97f432 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
index 51ddbfe..1580e57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
index 45d282e..5249a5b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
@@ -55,14 +55,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
index 62e3142..c6ad91b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/disjunctive-predicate-1/disjunctive-predicate-1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/disjunctive-predicate-1/disjunctive-predicate-1.3.ast
index de6088a..674bfd5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/disjunctive-predicate-1/disjunctive-predicate-1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/disjunctive-predicate-1/disjunctive-predicate-1.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
index 84b8cef..a4f5e43 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
index 4cabd9d..7b7c84a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
index 555a803..cedae20 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
index 73897d2..fd07d6a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -32,8 +31,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
index 9d4d6ce..cce39e2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
index 7e2dc9c..0ae291b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
index 41c1d43..991cc6c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
index e9b8771..61c54f0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
index 6f6c0ec..ab21d02 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
index cfa6fa4..9be27d4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
index 84b8cef..a4f5e43 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
index fe9235b..1795965 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
index 0ee151d..14d63cb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
index 0ee151d..14d63cb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
index 474b619..b6d7c24 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey/orders-index-custkey.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey/orders-index-custkey.4.ast
index 474b619..b6d7c24 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey/orders-index-custkey.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/orders-index-custkey/orders-index-custkey.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search-open/range-search-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search-open/range-search-open.4.ast
index 41b59ec..4e6446a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search-open/range-search-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search-open/range-search-open.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search/range-search.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search/range-search.4.ast
index 41b59ec..4e6446a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search/range-search.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/range-search/range-search.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-circular-query/rtree-secondary-index-circular-query.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-circular-query/rtree-secondary-index-circular-query.4.ast
index b9dedb5..46f9215 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-circular-query/rtree-secondary-index-circular-query.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-circular-query/rtree-secondary-index-circular-query.4.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
index 1302b5e..7c356c1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
index 1302b5e..7c356c1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
index 1302b5e..7c356c1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
index f986da7..4caec13 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance/ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance/ngram-edit-distance.4.ast
index 4ef8770..7790e94 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance/ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-edit-distance/ngram-edit-distance.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline/ngram-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
index 28ffc1b..c65e6f3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard/ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard/ngram-jaccard.4.ast
index 43318ff..485c868 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard/ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ngram-jaccard/ngram-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline/olist-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
index 9f6c4b4..c46d563 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance/olist-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance/olist-edit-distance.4.ast
index 497e47f..02f5a67 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance/olist-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-edit-distance/olist-edit-distance.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline/olist-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline/olist-jaccard-inline.4.ast
index eccc898..ce0b0cd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline/olist-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard-inline/olist-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard/olist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard/olist-jaccard.4.ast
index 5320d31..7e70652 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard/olist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/olist-jaccard/olist-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline/ulist-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
index eccc898..ce0b0cd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard/ulist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard/ulist-jaccard.4.ast
index 5320d31..7e70652 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard/ulist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/ulist-jaccard/ulist-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline/word-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline/word-jaccard-inline.4.ast
index 7267747..cc1d06a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline/word-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard-inline/word-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard/word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard/word-jaccard.4.ast
index 68c121d..fd7dbe9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard/word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join-noeqjoin/word-jaccard/word-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
index 9522d38..d9ac017 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance/ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance/ngram-edit-distance.4.ast
index 81773e8..b3202b8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance/ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-edit-distance/ngram-edit-distance.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
index 15024a2..37b6be1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard/ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard/ngram-jaccard.4.ast
index 8b33591..b53b8fb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard/ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ngram-jaccard/ngram-jaccard.4.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance-inline/olist-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
index 623e345..b8f05ef 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance-inline/olist-edit-distance-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance/olist-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance/olist-edit-distance.4.ast
index 562152c..3a631f9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance/olist-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-edit-distance/olist-edit-distance.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard-inline/olist-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard-inline/olist-jaccard-inline.4.ast
index 7d9918e..d4c2e8a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard-inline/olist-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard-inline/olist-jaccard-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard/olist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard/olist-jaccard.4.ast
index e58c7f5..444291e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard/olist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/olist-jaccard/olist-jaccard.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard-inline/ulist-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
index 7d9918e..d4c2e8a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard-inline/ulist-jaccard-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard/ulist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard/ulist-jaccard.4.ast
index e58c7f5..444291e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard/ulist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/ulist-jaccard/ulist-jaccard.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard-inline/word-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard-inline/word-jaccard-inline.4.ast
index cbc0f05..4c8a817 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard-inline/word-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard-inline/word-jaccard-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard/word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard/word-jaccard.4.ast
index 978c7ce..47976ed 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard/word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/inverted-index-join/word-jaccard/word-jaccard.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285-2/query_issue285-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285-2/query_issue285-2.3.ast
index 79290f8..a7e83ca 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285-2/query_issue285-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285-2/query_issue285-2.3.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [CSX]
         ]
-        AS
-        Variable [ Name=$b ]
+        AS Variable [ Name=$b ]
       ]
       Where
         OperatorExpr [
@@ -52,8 +51,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285/query_issue285.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285/query_issue285.3.ast
index 265ea02..d1a7271 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285/query_issue285.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue285/query_issue285.3.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [CSX]
         ]
-        AS
-        Variable [ Name=$b ]
+        AS Variable [ Name=$b ]
       ]
       Where
         OperatorExpr [
@@ -52,8 +51,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue658/query_issue658.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue658/query_issue658.3.ast
index cbe0ff1..8046dae 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue658/query_issue658.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue658/query_issue658.3.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [CSX]
         ]
-        AS
-        Variable [ Name=$b ]
+        AS Variable [ Name=$b ]
       ]
       Where
         OperatorExpr [
@@ -66,8 +65,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849-2/query_issue849-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849-2/query_issue849-2.3.ast
index 4f5b4e0..1a8dc54 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849-2/query_issue849-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849-2/query_issue849-2.3.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [s]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   (
     SELECT ELEMENT [
@@ -65,8 +64,7 @@
           )
         ]
       ]
-      AS
-      Variable [ Name=$z ]
+      AS Variable [ Name=$z ]
     ]
     Where
       OperatorExpr [
@@ -81,6 +79,5 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849/query_issue849.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849/query_issue849.3.ast
index 654e008..a35b4fa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849/query_issue849.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/leftouterjoin/query_issue849/query_issue849.3.ast
@@ -30,8 +30,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   (
     SELECT ELEMENT [
@@ -43,8 +42,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [s]
       ]
-      AS
-      Variable [ Name=$z ]
+      AS Variable [ Name=$z ]
     ]
     Where
       OperatorExpr [
@@ -59,6 +57,5 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/len_01/len_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/len_01/len_01.3.ast
index 94f0c25..bc3ef8f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/len_01/len_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/len_01/len_01.3.ast
@@ -51,6 +51,5 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [LONG] [1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_01/listify_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_01/listify_01.3.ast
index 19e047c..5085353 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_01/listify_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_01/listify_01.3.ast
@@ -11,8 +11,7 @@
         LiteralExpr [LONG] [2]
         LiteralExpr [LONG] [3]
       ]
-      AS
-      Variable [ Name=$token ]
+      AS Variable [ Name=$token ]
     ]
   )
 SELECT ELEMENT [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_02/listify_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_02/listify_02.3.ast
index 7fb49b5..0526647 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_02/listify_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_02/listify_02.3.ast
@@ -10,8 +10,7 @@
         LiteralExpr [STRING] [foo]
         LiteralExpr [STRING] [bar]
       ]
-      AS
-      Variable [ Name=$token ]
+      AS Variable [ Name=$token ]
     ]
   )
 SELECT ELEMENT [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_03/listify_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_03/listify_03.3.ast
index 3eb686c..7b18d20 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_03/listify_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/listify_03/listify_03.3.ast
@@ -9,8 +9,7 @@
     LiteralExpr [LONG] [1]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Let Variable [ Name=$y ]
   :=
@@ -37,7 +36,6 @@
           LiteralExpr [LONG] [0]
         ]
       ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/query-issue428/query-issue428.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/query-issue428/query-issue428.3.ast
index e441381..5318786 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/query-issue428/query-issue428.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/query-issue428/query-issue428.3.ast
@@ -29,8 +29,7 @@
       LiteralExpr [LONG] [5]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   OrderedListConstructor [
     OrderedListConstructor [
@@ -43,6 +42,5 @@
       LiteralExpr [LONG] [10]
     ]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/scan-collection_01/scan-collection_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/scan-collection_01/scan-collection_01.3.ast
index ff7058d..7b3e024 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/scan-collection_01/scan-collection_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/list/scan-collection_01/scan-collection_01.3.ast
@@ -8,6 +8,5 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [3]
   ]
-  AS
-  Variable [ Name=$u ]
+  AS Variable [ Name=$u ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/adm_binary/adm_binary.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/adm_binary/adm_binary.3.ast
index 3d46dd9..6147a6e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/adm_binary/adm_binary.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/adm_binary/adm_binary.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_01/csv_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_01/csv_01.3.ast
index 76e0eec..1fc68cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_01/csv_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_01/csv_01.3.ast
@@ -85,8 +85,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_02/csv_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_02/csv_02.3.ast
index 5b3143d..5fa5ed3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_02/csv_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_02/csv_02.3.ast
@@ -55,8 +55,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_03/csv_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_03/csv_03.3.ast
index 834efdf..0f9c737 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_03/csv_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_03/csv_03.3.ast
@@ -63,8 +63,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_04/csv_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_04/csv_04.3.ast
index b7cbd4b..418bbfd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_04/csv_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_04/csv_04.3.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_05/csv_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_05/csv_05.3.ast
index b7cbd4b..418bbfd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_05/csv_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_05/csv_05.3.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_06/csv_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_06/csv_06.3.ast
index b7cbd4b..418bbfd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_06/csv_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_06/csv_06.3.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_07/csv_07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_07/csv_07.3.ast
index b7cbd4b..418bbfd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_07/csv_07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_07/csv_07.3.ast
@@ -39,8 +39,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_cr/csv_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_cr/csv_08.3.ast
index 76e0eec..1fc68cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_cr/csv_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_cr/csv_08.3.ast
@@ -85,8 +85,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_crlf/csv_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_crlf/csv_08.3.ast
index 76e0eec..1fc68cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_crlf/csv_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_crlf/csv_08.3.ast
@@ -85,8 +85,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_lf/csv_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_lf/csv_08.3.ast
index 76e0eec..1fc68cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_lf/csv_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/csv_08_header_lf/csv_08.3.ast
@@ -85,8 +85,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes01/escapes01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes01/escapes01.3.ast
index 2b37a8e..9248970 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes01/escapes01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes01/escapes01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes02/escapes02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes02/escapes02.3.ast
index 2b37a8e..9248970 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes02/escapes02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/escapes02/escapes02.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/issue289_query/issue289_query.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/issue289_query/issue289_query.3.ast
index 3645723..a0a6757 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/issue289_query/issue289_query.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/issue289_query/issue289_query.3.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customers]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/type_promotion_0/type_promotion_0.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/type_promotion_0/type_promotion_0.3.ast
index 2b37a8e..9248970 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/type_promotion_0/type_promotion_0.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/load/type_promotion_0/type_promotion_0.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/materialization/assign-reuse/assign-reuse.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/materialization/assign-reuse/assign-reuse.3.ast
index 23559fa..4223a5f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/materialization/assign-reuse/assign-reuse.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/materialization/assign-reuse/assign-reuse.3.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$d ]
+      AS Variable [ Name=$d ]
     ]
     Where
       OperatorExpr [
@@ -33,8 +32,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$d ]
+      AS Variable [ Name=$d ]
     ]
     Where
       OperatorExpr [
@@ -97,12 +95,10 @@
 ]
 ]
 FROM [  Variable [ Name=$lonelyusers ]
-  AS
-  Variable [ Name=$l1 ]
+  AS Variable [ Name=$l1 ]
 ,
   Variable [ Name=$lonelyusers2 ]
-  AS
-  Variable [ Name=$l2 ]
+  AS Variable [ Name=$l2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/float_01/float_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/float_01/float_01.3.ast
index 85ceb1a..9868716 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/float_01/float_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/float_01/float_01.3.ast
@@ -11,6 +11,5 @@
     LiteralExpr [FLOAT] [0.1]
     LiteralExpr [FLOAT] [0.1]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/flushtest/flushtest.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/flushtest/flushtest.4.ast
index cdd2ab6..b1f231f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/flushtest/flushtest.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/flushtest/flushtest.4.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers2]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/groupby-orderby-count/groupby-orderby-count.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/groupby-orderby-count/groupby-orderby-count.3.ast
index 2399e4b..7db84bd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/groupby-orderby-count/groupby-orderby-count.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/groupby-orderby-count/groupby-orderby-count.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterData]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ,
   FunctionCall twitter.word-tokens@1[
     FieldAccessor [
@@ -39,20 +37,16 @@
       Field=text
     ]
   ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
 Groupby
   Variable [ Name=$tok ]
   :=
   Variable [ Name=$token ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$token ]
-   AS token
-  Variable [ Name=$t ]
-   AS t
+    token:=Variable [ Name=$token ]
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
@@ -65,8 +59,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#3 ]
+        AS Variable [ Name=#3 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/nested-loop-join_01/nested-loop-join_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/nested-loop-join_01/nested-loop-join_01.3.ast
index 7e52ea1..27f1a69 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/nested-loop-join_01/nested-loop-join_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/nested-loop-join_01/nested-loop-join_01.3.ast
@@ -37,14 +37,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Users]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Visitors]
   ]
-  AS
-  Variable [ Name=$visitor ]
+  AS Variable [ Name=$visitor ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/partition-by-nonexistent-field/partition-by-nonexistent-field.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/partition-by-nonexistent-field/partition-by-nonexistent-field.3.ast
index ef5fc9e..0b3fd5c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/partition-by-nonexistent-field/partition-by-nonexistent-field.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/partition-by-nonexistent-field/partition-by-nonexistent-field.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/prefix-search/prefix-search.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/prefix-search/prefix-search.3.ast
index f549338..78a70a7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/prefix-search/prefix-search.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/prefix-search/prefix-search.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/query_issue267/query_issue267.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/query_issue267/query_issue267.3.ast
index 45b8f56..5cef21d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/query_issue267/query_issue267.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/query_issue267/query_issue267.3.ast
@@ -6,14 +6,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t2]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/stable_sort/stable_sort.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/stable_sort/stable_sort.3.ast
index 2627232..73977d7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/stable_sort/stable_sort.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/stable_sort/stable_sort.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/string_eq_01/string_eq_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/string_eq_01/string_eq_01.3.ast
index 52e2b67..41fbfd9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/string_eq_01/string_eq_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/misc/string_eq_01/string_eq_01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
index 1b58438..b129f62 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/compact-dataset-and-its-indexes/compact-dataset-and-its-indexes.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
index f7e4fee..347bcd1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/drop-index/drop-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/drop-index/drop-index.4.ast
index da06490..59e64c5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/drop-index/drop-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/drop-index/drop-index.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
index f2f7887..63307a6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-empty-dataset-with-index/insert-into-empty-dataset-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
index 0ff9dd0..da5c8e8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_01/insert-into-loaded-dataset-with-index_01.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
index 3b3131a..010d69e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/insert-into-loaded-dataset-with-index_02/insert-into-loaded-dataset-with-index_02.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-index/load-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-index/load-with-index.3.ast
index 3b3131a..010d69e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-index/load-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-index/load-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-ngram-index/load-with-ngram-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-ngram-index/load-with-ngram-index.3.ast
index 7080c0a..5d856c6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-ngram-index/load-with-ngram-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-ngram-index/load-with-ngram-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   FunctionCall TinySocial.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-rtree-index/load-with-rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-rtree-index/load-with-rtree-index.3.ast
index 1ef42e0..0f6b17a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-rtree-index/load-with-rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-rtree-index/load-with-rtree-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   FunctionCall TinySocial.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-word-index/load-with-word-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-word-index/load-with-word-index.3.ast
index 6a17d33..81ed659 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-word-index/load-with-word-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/load-with-word-index/load-with-word-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-insert/nested-uuid-insert.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-insert/nested-uuid-insert.3.ast
index 09b20c6..7e9c615 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-insert/nested-uuid-insert.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-insert/nested-uuid-insert.3.ast
@@ -15,6 +15,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [doublenests]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-load/nested-uuid-load.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-load/nested-uuid-load.3.ast
index 86133b1..1ba5521 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-load/nested-uuid-load.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/nested-uuid-load/nested-uuid-load.3.ast
@@ -26,8 +26,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
index 3802830..e85ef69 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-btree-secondary-index-nullable/scan-delete-btree-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
index 413b4a8..7922298 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index-nullable/scan-delete-rtree-secondary-index-nullable.5.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
index 413b4a8..7922298 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
index db1c69c..03e0f3e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-btree-secondary-index-nullable/scan-insert-btree-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomersMini]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
index 2c6acd8..8c41a3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index-nullable/scan-insert-rtree-secondary-index-nullable.5.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
index 2c6acd8..8c41a3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index-dml/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/adm-format/adm-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/adm-format/adm-format.3.ast
index cfbd249..e6ee28d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/adm-format/adm-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/adm-format/adm-format.3.ast
@@ -106,8 +106,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
index c72f9aa..14fb18f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin/leftouterjoin.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
index 7edd08b..b06cad5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -95,8 +94,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/rtree-index/rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/rtree-index/rtree-index.3.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/rtree-index/rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/external-indexing/rtree-index/rtree-index.3.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
index e973940..27a3a1e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-primary-equi-join/btree-primary-equi-join.3.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
index 8aa1e0c..ddfe85e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
index 92067a4..55edfef 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
index 46f589e..7b84832 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
index 9bab9ba..98199de 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard/ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
index 58e116f..f54a33a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
index 6e695da..45e7acd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
index 5441f6f..007ed4c5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard/word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard/word-jaccard.4.ast
index c893d37..0c0ec3f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard/word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-join/word-jaccard/word-jaccard.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
index 7edd08b..b06cad5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -95,8 +94,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
index bb46aec..5c212c0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -115,8 +114,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
index 8530ff2..7101e57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx1/probe-pidx-with-join-invidx-sidx1.3.ast
@@ -63,8 +63,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -127,8 +126,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
index 24d2dae..df40355 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
@@ -63,8 +63,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -127,8 +126,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
index c72f9aa..14fb18f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
index ec18922..4e6fcaa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -108,8 +107,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
index 936ea3d..85f10b7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
index 312fec7..cbb879c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
index 90d33a6..448c8aa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
@@ -73,14 +73,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
index 3802830..e85ef69 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/cust-index-age-nullable/cust-index-age-nullable.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
index 09d1286..a430474 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
index cdbc35f..5e173d3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
index e88d40a..fe86c69 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -41,8 +40,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
index 9b1b3bb..3e387f7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
index 8d3099e..c7a9a8d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
@@ -10,8 +10,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
index 5835c97..e54f62e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance-panic/inverted-index-olist-edit-distance-panic.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
index afeb86c..3a228f8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-edit-distance/inverted-index-olist-edit-distance.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
index 98642fe..e22169f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-olist-jaccard/inverted-index-olist-jaccard.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
index d25eefc..72d84d0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-ulist-jaccard/inverted-index-ulist-jaccard.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
index bc34ba4..b482e66 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive-open/orders-index-custkey-conjunctive-open.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
index bc34ba4..b482e66 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
index aec9fc9..3aa4530 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey-open/orders-index-custkey-open.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
index aec9fc9..3aa4530 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search-open/range-search-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search-open/range-search-open.4.ast
index b601d1d..25dade1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search-open/range-search-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search-open/range-search-open.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search/range-search.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search/range-search.4.ast
index b601d1d..25dade1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search/range-search.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/range-search/range-search.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-nullable/rtree-secondary-index-nullable.4.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index-open/rtree-secondary-index-open.4.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/adm-format/adm-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/adm-format/adm-format.3.ast
index cfbd249..e6ee28d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/adm-format/adm-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/adm-format/adm-format.3.ast
@@ -106,8 +106,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
index c72f9aa..14fb18f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin/leftouterjoin.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
index 7edd08b..b06cad5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/leftouterjoin/leftouterjoin.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -95,8 +94,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/rtree-index/rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/rtree-index/rtree-index.3.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/rtree-index/rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/external-indexing/rtree-index/rtree-index.3.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-closed/bottom-closed-top-closed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-closed/bottom-closed-top-closed.3.ast
index f18d049..2c289ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-closed/bottom-closed-top-closed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-closed/bottom-closed-top-closed.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-open/bottom-closed-top-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-open/bottom-closed-top-open.3.ast
index f18d049..2c289ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-open/bottom-closed-top-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-closed-top-open/bottom-closed-top-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-closed/bottom-open-top-closed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-closed/bottom-open-top-closed.3.ast
index f18d049..2c289ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-closed/bottom-open-top-closed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-closed/bottom-open-top-closed.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-open/bottom-open-top-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-open/bottom-open-top-open.3.ast
index f18d049..2c289ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-open/bottom-open-top-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/highly-open-highly-nested/bottom-open-top-open/bottom-open-top-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
index 8aa1e0c..ddfe85e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
@@ -40,14 +40,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
index 92067a4..55edfef 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
index 46f589e..7b84832 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
index f5d0407..1bf6be6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
@@ -29,14 +29,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard/ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
index 8f5cc23..774a7a9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/ngram-jaccard/ngram-jaccard.4.ast
@@ -24,14 +24,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
index 6e695da..45e7acd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
@@ -51,14 +51,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
index 5441f6f..007ed4c5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
@@ -28,14 +28,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard/word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard/word-jaccard.4.ast
index c893d37..0c0ec3f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard/word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-join/word-jaccard/word-jaccard.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
index 7edd08b..b06cad5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -95,8 +94,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
index bb46aec..5c212c0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -115,8 +114,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
index 86082f1..b12cdac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -115,8 +114,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesTmp]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
index c72f9aa..14fb18f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
index ec18922..4e6fcaa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
@@ -57,8 +57,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -108,8 +107,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
index 936ea3d..85f10b7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
index 312fec7..cbb879c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
index 90d33a6..448c8aa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
@@ -73,14 +73,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
index 09d1286..a430474 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
index cdbc35f..5e173d3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
index 9b1b3bb..3e387f7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
index 8d3099e..c7a9a8d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
@@ -10,8 +10,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
index b9753d1..724d3b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
index 53b355e..7b62e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
index bc34ba4..b482e66 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
index aec9fc9..3aa4530 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/orders-index-custkey/orders-index-custkey.4.ast
@@ -29,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/range-search/range-search.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/range-search/range-search.4.ast
index b601d1d..25dade1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/range-search/range-search.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/range-search/range-search.4.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
index 3700f65..9c42719 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nested-open-index/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
@@ -18,8 +18,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nestrecords/nestrecord/nestrecord.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nestrecords/nestrecord/nestrecord.3.ast
index 1c6d7f0..e739a6d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nestrecords/nestrecord/nestrecord.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/nestrecords/nestrecord/nestrecord.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list-ordered01/heterog-list-ordered01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list-ordered01/heterog-list-ordered01.3.ast
index 69306dc..1ede8bd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list-ordered01/heterog-list-ordered01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list-ordered01/heterog-list-ordered01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [T1]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list01/heterog-list01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list01/heterog-list01.3.ast
index 69306dc..1ede8bd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list01/heterog-list01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/heterog-list01/heterog-list01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [T1]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-01/open-closed-01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-01/open-closed-01.3.ast
index b3df586..00bab71 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-01/open-closed-01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-01/open-closed-01.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-12/open-closed-12.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-12/open-closed-12.3.ast
index f646e71..660fb7f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-12/open-closed-12.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-12/open-closed-12.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-14/open-closed-14.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-14/open-closed-14.3.ast
index f646e71..660fb7f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-14/open-closed-14.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-14/open-closed-14.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-24/open-closed-24.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-24/open-closed-24.3.ast
index ef5fc9e..0b3fd5c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-24/open-closed-24.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-24/open-closed-24.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-25/open-closed-25.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-25/open-closed-25.3.ast
index ef5fc9e..0b3fd5c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-25/open-closed-25.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-25/open-closed-25.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-26/open-closed-26.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-26/open-closed-26.3.ast
index ef5fc9e..0b3fd5c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-26/open-closed-26.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-26/open-closed-26.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-29/open-closed-29.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-29/open-closed-29.3.ast
index 267c4a4..698a06e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-29/open-closed-29.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-29/open-closed-29.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-31/open-closed-31.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-31/open-closed-31.3.ast
index 17806f1..0d4b3ff 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-31/open-closed-31.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-31/open-closed-31.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-32/open-closed-32.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-32/open-closed-32.3.ast
index 7f55a44..eab1dd6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-32/open-closed-32.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-32/open-closed-32.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-33/open-closed-33.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-33/open-closed-33.3.ast
index 7f55a44..eab1dd6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-33/open-closed-33.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/open-closed-33/open-closed-33.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds01]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue196/query-issue196.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue196/query-issue196.3.ast
index edae02b..fc3536d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue196/query-issue196.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue196/query-issue196.3.ast
@@ -11,8 +11,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [t1]
         ]
-        AS
-        Variable [ Name=$l ]
+        AS Variable [ Name=$l ]
       ]
       Orderby
         FieldAccessor [
@@ -33,8 +32,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [t2]
         ]
-        AS
-        Variable [ Name=$m ]
+        AS Variable [ Name=$m ]
       ]
       Orderby
         FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue208/query-issue208.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue208/query-issue208.3.ast
index 83a56f6..8861040 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue208/query-issue208.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue208/query-issue208.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Where
   OperatorExpr [
@@ -67,11 +65,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue236/query-issue236.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue236/query-issue236.3.ast
index 47ffdfb..077c79a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue236/query-issue236.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue236/query-issue236.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue258/query-issue258.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue258/query-issue258.3.ast
index 30ad54e..a2bee66 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue258/query-issue258.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue258/query-issue258.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [ds1]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343-2/query-issue343-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343-2/query-issue343-2.3.ast
index 3c2f800..d4ff417 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343-2/query-issue343-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343-2/query-issue343-2.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [All]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343/query-issue343.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343/query-issue343.3.ast
index 3c2f800..d4ff417 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343/query-issue343.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue343/query-issue343.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [All]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350-2/query-issue350-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350-2/query-issue350-2.3.ast
index 2deffa7..b2c1077 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350-2/query-issue350-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350-2/query-issue350-2.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$tm ]
+  AS Variable [ Name=$tm ]
 ]
 Where
   QuantifiedExpression EVERY [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350/query-issue350.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350/query-issue350.3.ast
index 5cd7e6b..f2dbadd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350/query-issue350.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue350/query-issue350.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$tm ]
+  AS Variable [ Name=$tm ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue377/query-issue377.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue377/query-issue377.3.ast
index ba39c82..c246b60 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue377/query-issue377.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue377/query-issue377.3.ast
@@ -47,8 +47,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t ]
+        AS Variable [ Name=$t ]
       ]
       Let Variable [ Name=$tu ]
         :=
@@ -75,8 +74,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue410/query-issue410.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue410/query-issue410.3.ast
index ee20fb7..8411681 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue410/query-issue410.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue410/query-issue410.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Employee]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423-2/query-issue423-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423-2/query-issue423-2.3.ast
index be43c46..4898dd3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423-2/query-issue423-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423-2/query-issue423-2.3.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t2]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423/query-issue423.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423/query-issue423.3.ast
index 8ac9af5..290e76b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423/query-issue423.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue423/query-issue423.3.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t2]
   ]
-  AS
-  Variable [ Name=$m ]
+  AS Variable [ Name=$m ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue442/query-issue442.1.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue442/query-issue442.1.ast
index deb43af..72b2823 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue442/query-issue442.1.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue442/query-issue442.1.ast
@@ -53,8 +53,7 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453-2/query-issue453-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453-2/query-issue453-2.3.ast
index a4e44c9..f3eb5ac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453-2/query-issue453-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453-2/query-issue453-2.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DataOpen]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453/query-issue453.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453/query-issue453.3.ast
index a4e44c9..f3eb5ac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453/query-issue453.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue453/query-issue453.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DataOpen]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue456/query-issue456.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue456/query-issue456.3.ast
index 4c5e405..02f9822 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue456/query-issue456.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue456/query-issue456.3.ast
@@ -12,8 +12,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
@@ -22,8 +21,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DataOpen]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Let Variable [ Name=$id ]
   :=
@@ -38,12 +36,9 @@
     Variable [ Name=$x ]
     Field=int_m
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$id ]
-   AS id
-  Variable [ Name=$x ]
-   AS x
+    id:=Variable [ Name=$id ]
+    x:=Variable [ Name=$x ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue487/query-issue487.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue487/query-issue487.3.ast
index 83f1bf6..57772bf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue487/query-issue487.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue487/query-issue487.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55-1/query-issue55-1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55-1/query-issue55-1.3.ast
index 6a5b504..c318630 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55-1/query-issue55-1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55-1/query-issue55-1.3.ast
@@ -47,10 +47,8 @@
 ]
 ]
 FROM [  Variable [ Name=$l ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ,
   Variable [ Name=$l ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55/query-issue55.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55/query-issue55.3.ast
index 086073e..d65a7a2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55/query-issue55.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue55/query-issue55.3.ast
@@ -21,6 +21,5 @@
       LiteralExpr [STRING] [a]
     ]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue592/query-issue592.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue592/query-issue592.3.ast
index 18131ad..6d0a36d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue592/query-issue592.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue592/query-issue592.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [fooset]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue625/query-issue625.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue625/query-issue625.3.ast
index 4003453..7df5c42 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue625/query-issue625.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-issue625/query-issue625.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Foo]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal/query-proposal.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal/query-proposal.3.ast
index c634a18..1c929d1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal/query-proposal.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal/query-proposal.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -40,15 +39,13 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TweetMessages]
       ]
-      AS
-      Variable [ Name=$tweet ]
+      AS Variable [ Name=$tweet ]
 ,
       FieldAccessor [
         Variable [ Name=$tweet ]
         Field=referred-topics
       ]
-      AS
-      Variable [ Name=$tp ]
+      AS Variable [ Name=$tp ]
     ]
     Where
       QuantifiedExpression SOME [
@@ -67,8 +64,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$tp1 ]
+  AS Variable [ Name=$tp1 ]
 ]
 Groupby
   Variable [ Name=$tp2 ]
@@ -77,11 +73,9 @@
     Variable [ Name=$tp1 ]
     Field=topic
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$tp1 ]
-   AS tp1
+    tp1:=Variable [ Name=$tp1 ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal02/query-proposal02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal02/query-proposal02.3.ast
index 1981fc7..54ebc42 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal02/query-proposal02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-closed/query-proposal02/query-proposal02.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,15 +29,13 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$tweet ]
+  AS Variable [ Name=$tweet ]
 ,
   FieldAccessor [
     Variable [ Name=$tweet ]
     Field=referred-topics
   ]
-  AS
-  Variable [ Name=$reftopic ]
+  AS Variable [ Name=$reftopic ]
 ]
 Where
   QuantifiedExpression SOME [
@@ -60,13 +57,10 @@
   Variable [ Name=$topic ]
   :=
   Variable [ Name=$reftopic ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$reftopic ]
-   AS reftopic
-  Variable [ Name=$tweet ]
-   AS tweet
+    reftopic:=Variable [ Name=$reftopic ]
+    tweet:=Variable [ Name=$tweet ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/adm-format/adm-format.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/adm-format/adm-format.3.ast
index 0244805..c21eaf2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/adm-format/adm-format.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/adm-format/adm-format.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$d ]
+  AS Variable [ Name=$d ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
index ab69658..927f192 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin-rtree/leftouterjoin-rtree.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -70,8 +69,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin/leftouterjoin.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin/leftouterjoin.3.ast
index cec3efa..016d582 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin/leftouterjoin.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/leftouterjoin/leftouterjoin.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -74,8 +73,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/rtree-index/rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/rtree-index/rtree-index.3.ast
index 1302b5e..7c356c1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/rtree-index/rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/external-indexing/rtree-index/rtree-index.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
index 0b9e26c..b98ea54 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/btree-secondary-equi-join/btree-secondary-equi-join.4.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
index 9522d38..d9ac017 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance-inline/ngram-edit-distance-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance/ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
index 81773e8..b3202b8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-edit-distance/ngram-edit-distance.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
index 0323a1f..22a6a81 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard-inline/ngram-jaccard-inline.4.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard/ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard/ngram-jaccard.4.ast
index 6676c21..2424075 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard/ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/ngram-jaccard/ngram-jaccard.4.ast
@@ -18,14 +18,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
index 3d59488..76b9409 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/rtree-spatial-intersect-point/rtree-spatial-intersect-point.4.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData2]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard-inline/word-jaccard-inline.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
index 7e52dbd..f8f167b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard-inline/word-jaccard-inline.4.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard/word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard/word-jaccard.4.ast
index 4805b30..d7de2c4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard/word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-join/word-jaccard/word-jaccard.4.ast
@@ -17,14 +17,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CSX]
   ]
-  AS
-  Variable [ Name=$b ]
+  AS Variable [ Name=$b ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
index cec3efa..016d582 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx1/probe-pidx-with-join-btree-sidx1.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -74,8 +73,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
index 3d039dd..9da7404 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-btree-sidx2/probe-pidx-with-join-btree-sidx2.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -88,8 +87,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
index e036e4d..2d27947 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-invidx-sidx2/probe-pidx-with-join-invidx-sidx2.3.ast
@@ -51,8 +51,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Let Variable [ Name=$sim ]
         :=
@@ -100,8 +99,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesTmp]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
index ab69658..927f192 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx1/probe-pidx-with-join-rtree-sidx1.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         FunctionCall test.spatial-intersect@2[
@@ -70,8 +69,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
index b7f77df..947d145 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-leftouterjoin/probe-pidx-with-join-rtree-sidx2/probe-pidx-with-join-rtree-sidx2.3.ast
@@ -45,8 +45,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -84,8 +83,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Let Variable [ Name=$n ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
index 406debe..366d06e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key-mixed-intervals/btree-index-composite-key-mixed-intervals.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employeeOpen]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
index 62f447c..914bf05 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-composite-key/btree-index-composite-key.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [employeeOpen]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
index c86de28..786562f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/btree-index-rewrite-multiple/btree-index-rewrite-multiple.4.ast
@@ -55,14 +55,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [OrdersOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [OrdersOpen]
   ]
-  AS
-  Variable [ Name=$o2 ]
+  AS Variable [ Name=$o2 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
index a0b8175..4ea1306 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-contains/inverted-index-ngram-contains.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
index 4cabd9d..7b7c84a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-contains/inverted-index-ngram-edit-distance-contains.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
index a545fe2..649dfd5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-panic/inverted-index-ngram-edit-distance-panic.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
index 73897d2..fd07d6a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance-word-tokens/inverted-index-ngram-edit-distance-word-tokens.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ,
   FunctionCall test.word-tokens@1[
     FieldAccessor [
@@ -32,8 +31,7 @@
       Field=title
     ]
   ]
-  AS
-  Variable [ Name=$word ]
+  AS Variable [ Name=$word ]
 ]
 Where
   IndexAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
index b290bfc..70df0ed 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-edit-distance/inverted-index-ngram-edit-distance.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$ed ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
index 0044993..21b9588 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-ngram-jaccard/inverted-index-ngram-jaccard.4.ast
@@ -48,8 +48,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
index a0b8175..4ea1306 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-contains/inverted-index-word-contains.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.contains@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
index 3a09fdc..baec7df 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/inverted-index-word-jaccard/inverted-index-word-jaccard.4.ast
@@ -47,8 +47,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$jacc ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
index 974a605..0a8aa7c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey-conjunctive/orders-index-custkey-conjunctive.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [OrdersOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey/orders-index-custkey.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey/orders-index-custkey.4.ast
index bc40add..cb8548e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey/orders-index-custkey.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/orders-index-custkey/orders-index-custkey.4.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [OrdersOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/range-search/range-search.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/range-search/range-search.4.ast
index 53ad9b5..5710661 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/range-search/range-search.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/range-search/range-search.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItemOpen]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
index 7de4b89..c6f3177 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/open-index-enforced/index-selection/rtree-secondary-index/rtree-secondary-index.4.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyDataOpen]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_01/everysat_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_01/everysat_01.3.ast
index aee5069..16141da 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_01/everysat_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_01/everysat_01.3.ast
@@ -7,8 +7,7 @@
     LiteralExpr [LONG] [10]
     NEGATIVE LiteralExpr [LONG] [30]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   QuantifiedExpression EVERY [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_04/everysat_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_04/everysat_04.3.ast
index 5808cbf..1e81e9f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_04/everysat_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/everysat_04/everysat_04.3.ast
@@ -113,6 +113,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$x ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_01/somesat_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_01/somesat_01.3.ast
index e1e8b65..2584e26 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_01/somesat_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_01/somesat_01.3.ast
@@ -9,8 +9,7 @@
     NEGATIVE LiteralExpr [LONG] [21]
     LiteralExpr [LONG] [50]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_02/somesat_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_02/somesat_02.3.ast
index 7aebb09..0fee643 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_02/somesat_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_02/somesat_02.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [CustomerSomeSat02]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_06/somesat_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_06/somesat_06.3.ast
index d0d67f4..e5e0e65 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_06/somesat_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/quantifiers/somesat_06/somesat_06.3.ast
@@ -113,6 +113,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$x ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.4.ast
index b071d6b..e4b5374 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.5.ast
index eea3f99..9c74363 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.6.ast
index b4cd41e..081ab7b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.6.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.7.ast
index 3aafcb2..6b1a0fc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/range-hints/order-by/order-by.7.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.10.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.10.ast
index 816bb17..596df09 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.10.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.10.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.11.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.11.ast
index 2198926..2136522 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.11.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.11.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.12.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.12.ast
index 4cf3180..6964ae3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.12.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.12.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.3.ast
index 640f2f4..06c8956 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.4.ast
index 8f6dd8a..1e0dfbe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.5.ast
index c990329..5538c4e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.6.ast
index 683e01e..147c38a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.6.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.7.ast
index fb9178e..d10c2e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.7.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.8.ast
index dcf8218..d4091ba 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.8.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.9.ast
index c4f4972..a6a2d64 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/access-nested-fields/access-nested-fields.9.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/expFieldName/expFieldName.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/expFieldName/expFieldName.3.ast
index b688023..2230b1f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/expFieldName/expFieldName.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/expFieldName/expFieldName.3.ast
@@ -13,6 +13,5 @@
     LiteralExpr [STRING] [field1]
     LiteralExpr [STRING] [field2]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/field-access-on-open-field/field-access-on-open-field.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/field-access-on-open-field/field-access-on-open-field.3.ast
index 5d42e18..84c69fe 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/field-access-on-open-field/field-access-on-open-field.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/field-access-on-open-field/field-access-on-open-field.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Let Variable [ Name=$a ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-closed/highly-nested-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-closed/highly-nested-open.3.ast
index ae7ba39..7e2b064 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-closed/highly-nested-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-closed/highly-nested-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-mixed/highly-nested-mixed.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-mixed/highly-nested-mixed.3.ast
index ae7ba39..7e2b064 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-mixed/highly-nested-mixed.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-mixed/highly-nested-mixed.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-open/highly-nested-open.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-open/highly-nested-open.3.ast
index ae7ba39..7e2b064 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-open/highly-nested-open.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/highly-nested-open/highly-nested-open.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Animals]
   ]
-  AS
-  Variable [ Name=$test ]
+  AS Variable [ Name=$test ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/tiny-social-example/tiny-social-example.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/tiny-social-example/tiny-social-example.4.ast
index ca6eb96..5ba98ed 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/tiny-social-example/tiny-social-example.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-field-value/tiny-social-example/tiny-social-example.4.ast
@@ -6,14 +6,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ,
   FunctionCall TinySocial.get-record-fields@1[
     Variable [ Name=$r ]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
 Let Variable [ Name=$result ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.4.ast
index 7ff030a..7a8360b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.4.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.5.ast
index dea8797..6e1bdec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.5.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.6.ast
index d79e7dd..525a799 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.6.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.7.ast
index a665395..593fbfa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.7.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.8.ast
index 823c7a5..d375a57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.8.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.9.ast
index ee81dc9..2132679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-no-complex-types/tiny-social-example-no-complex-types.9.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ,
   FunctionCall TinySocial.get-record-fields@1[
     Variable [ Name=$r ]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
 Groupby
   Variable [ Name=$n ]
@@ -44,13 +42,10 @@
     Variable [ Name=$f ]
     Field=field-type
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$f ]
-   AS f
-  Variable [ Name=$r ]
-   AS r
+    f:=Variable [ Name=$f ]
+    r:=Variable [ Name=$r ]
   )
 
 Let Variable [ Name=$count ]
@@ -64,8 +59,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.4.ast
index 7ff030a..7a8360b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.4.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.5.ast
index dea8797..6e1bdec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.5.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.6.ast
index d79e7dd..525a799 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.6.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.7.ast
index a665395..593fbfa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.7.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.8.ast
index 823c7a5..d375a57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.8.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.9.ast
index ee81dc9..2132679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-lists/tiny-social-example-only-lists.9.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ,
   FunctionCall TinySocial.get-record-fields@1[
     Variable [ Name=$r ]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
 Groupby
   Variable [ Name=$n ]
@@ -44,13 +42,10 @@
     Variable [ Name=$f ]
     Field=field-type
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$f ]
-   AS f
-  Variable [ Name=$r ]
-   AS r
+    f:=Variable [ Name=$f ]
+    r:=Variable [ Name=$r ]
   )
 
 Let Variable [ Name=$count ]
@@ -64,8 +59,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.4.ast
index 7ff030a..7a8360b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.4.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.5.ast
index dea8797..6e1bdec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.5.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.6.ast
index d79e7dd..525a799 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.6.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.7.ast
index a665395..593fbfa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.7.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterUsersAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.8.ast
index 823c7a5..d375a57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.8.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.9.ast
index ee81dc9..2132679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/get-record-fields/tiny-social-example-only-records/tiny-social-example-only-records.9.ast
@@ -22,14 +22,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessagesAlternate]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ,
   FunctionCall TinySocial.get-record-fields@1[
     Variable [ Name=$r ]
   ]
-  AS
-  Variable [ Name=$f ]
+  AS Variable [ Name=$f ]
 ]
 Groupby
   Variable [ Name=$n ]
@@ -44,13 +42,10 @@
     Variable [ Name=$f ]
     Field=field-type
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$f ]
-   AS f
-  Variable [ Name=$r ]
-   AS r
+    f:=Variable [ Name=$f ]
+    r:=Variable [ Name=$r ]
   )
 
 Let Variable [ Name=$count ]
@@ -64,8 +59,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-closed-fieldname-conflict_issue173/open-closed-fieldname-conflict_issue173.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-closed-fieldname-conflict_issue173/open-closed-fieldname-conflict_issue173.3.ast
index 87409c1..c165b6f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-closed-fieldname-conflict_issue173/open-closed-fieldname-conflict_issue173.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-closed-fieldname-conflict_issue173/open-closed-fieldname-conflict_issue173.3.ast
@@ -22,6 +22,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-open-fieldname-conflict_issue173/open-open-fieldname-conflict_issue173.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-open-fieldname-conflict_issue173/open-open-fieldname-conflict_issue173.3.ast
index a9424e7..0ec5e92 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-open-fieldname-conflict_issue173/open-open-fieldname-conflict_issue173.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/records/open-open-fieldname-conflict_issue173/open-open-fieldname-conflict_issue173.3.ast
@@ -23,6 +23,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/10/10.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/10/10.3.ast
index 5cf4e83..89a91ac 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/10/10.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/10/10.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP1]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/20/20.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/20/20.3.ast
index aa83cd5..639c43e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/20/20.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/20/20.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPadm]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/30/30.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/30/30.3.ast
index 6dcdc5e..4da87c8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/30/30.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/30/30.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPsplits]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_01/alltypes_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_01/alltypes_01.3.ast
index bbf821c..bb0ad88 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_01/alltypes_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_01/alltypes_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [All]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_02/alltypes_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_02/alltypes_02.3.ast
index bbf821c..bb0ad88 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_02/alltypes_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/alltypes_02/alltypes_02.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [All]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/invalid-scan-syntax/invalid-scan-syntax.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/invalid-scan-syntax/invalid-scan-syntax.3.ast
index ab80da6..96f1482 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/invalid-scan-syntax/invalid-scan-syntax.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/invalid-scan-syntax/invalid-scan-syntax.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test.Office]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_1/issue238_query_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_1/issue238_query_1.3.ast
index aa83cd5..639c43e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_1/issue238_query_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_1/issue238_query_1.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPadm]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_2/issue238_query_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_2/issue238_query_2.3.ast
index aa83cd5..639c43e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_2/issue238_query_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/issue238_query_2/issue238_query_2.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLPadm]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/numeric_types_01/numeric_types_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/numeric_types_01/numeric_types_01.3.ast
index 10710a1..7a43203 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/numeric_types_01/numeric_types_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/numeric_types_01/numeric_types_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Numeric]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/spatial_types_01/spatial_types_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/spatial_types_01/spatial_types_01.3.ast
index 0b11a5b..fe680d7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/spatial_types_01/spatial_types_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/spatial_types_01/spatial_types_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Spatial]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/temp_types_01/temp_types_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/temp_types_01/temp_types_01.3.ast
index 9b47058..8a8d9e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/temp_types_01/temp_types_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/scan/temp_types_01/temp_types_01.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Temp]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/count-nullable/count-nullable.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/count-nullable/count-nullable.3.ast
index 5fc4078..cde6b6d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/count-nullable/count-nullable.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/count-nullable/count-nullable.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Groupby
   Variable [ Name=$age ]
@@ -40,11 +38,9 @@
     Variable [ Name=$c ]
     Field=age
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$c ]
-   AS c
+    c:=Variable [ Name=$c ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/cust-filter/cust-filter.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/cust-filter/cust-filter.3.ast
index 5055704..eea1c28 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/cust-filter/cust-filter.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/cust-filter/cust-filter.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customers]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/has-param1/has-param1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/has-param1/has-param1.3.ast
index 29d89dd..5fb8fda 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/has-param1/has-param1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/semistructured/has-param1/has-param1.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.not@1[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_ints/edit-distance-check_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_ints/edit-distance-check_ints.3.ast
index c3dde01..b8c478a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_ints/edit-distance-check_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_ints/edit-distance-check_ints.3.ast
@@ -49,6 +49,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_strings/edit-distance-check_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_strings/edit-distance-check_strings.3.ast
index c2b52e7..febad20 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_strings/edit-distance-check_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_strings/edit-distance-check_strings.3.ast
@@ -34,6 +34,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_unicode/edit-distance-check_unicode.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_unicode/edit-distance-check_unicode.3.ast
index edaf11d..dcf6a2d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_unicode/edit-distance-check_unicode.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-check_unicode/edit-distance-check_unicode.3.ast
@@ -37,6 +37,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-list-is-filterable/edit-distance-list-is-filterable.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-list-is-filterable/edit-distance-list-is-filterable.3.ast
index 9c7b92e..ead9c7c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-list-is-filterable/edit-distance-list-is-filterable.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-list-is-filterable/edit-distance-list-is-filterable.3.ast
@@ -51,6 +51,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-string-is-filterable/edit-distance-string-is-filterable.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-string-is-filterable/edit-distance-string-is-filterable.3.ast
index 59e5a9b..bbac9fd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-string-is-filterable/edit-distance-string-is-filterable.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance-string-is-filterable/edit-distance-string-is-filterable.3.ast
@@ -135,6 +135,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_ints/edit-distance_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_ints/edit-distance_ints.3.ast
index b9c16e9..26aedbf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_ints/edit-distance_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_ints/edit-distance_ints.3.ast
@@ -37,6 +37,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_strings/edit-distance_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_strings/edit-distance_strings.3.ast
index 53e3c7a..c47f7fa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_strings/edit-distance_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/edit-distance_strings/edit-distance_strings.3.ast
@@ -22,6 +22,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-edit-distance/fuzzyeq-edit-distance.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-edit-distance/fuzzyeq-edit-distance.3.ast
index 9ae7bd0..57dcfa5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-edit-distance/fuzzyeq-edit-distance.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-edit-distance/fuzzyeq-edit-distance.3.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-similarity-jaccard/fuzzyeq-similarity-jaccard.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-similarity-jaccard/fuzzyeq-similarity-jaccard.3.ast
index 73bb666..e85a7bf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-similarity-jaccard/fuzzyeq-similarity-jaccard.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/fuzzyeq-similarity-jaccard/fuzzyeq-similarity-jaccard.3.ast
@@ -8,8 +8,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/prefix-len-jaccard/prefix-len-jaccard.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/prefix-len-jaccard/prefix-len-jaccard.3.ast
index e556368..40c2b99 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/prefix-len-jaccard/prefix-len-jaccard.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/prefix-len-jaccard/prefix-len-jaccard.3.ast
@@ -32,6 +32,5 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [LONG] [1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_ints/similarity-jaccard-check_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_ints/similarity-jaccard-check_ints.3.ast
index b567211..fd29ffd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_ints/similarity-jaccard-check_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_ints/similarity-jaccard-check_ints.3.ast
@@ -135,6 +135,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_query/similarity-jaccard-check_query.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_query/similarity-jaccard-check_query.3.ast
index 841a312..c22f17a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_query/similarity-jaccard-check_query.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_query/similarity-jaccard-check_query.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings/similarity-jaccard-check_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings/similarity-jaccard-check_strings.3.ast
index dc782ff..ce37445 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings/similarity-jaccard-check_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings/similarity-jaccard-check_strings.3.ast
@@ -180,6 +180,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings_issue628/similarity-jaccard-check_strings_issue628.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings_issue628/similarity-jaccard-check_strings_issue628.3.ast
index a0ac61a..a552729 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings_issue628/similarity-jaccard-check_strings_issue628.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-check_strings_issue628/similarity-jaccard-check_strings_issue628.3.ast
@@ -76,6 +76,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix-check/similarity-jaccard-prefix-check.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix-check/similarity-jaccard-prefix-check.3.ast
index 00a73db..fc78deb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix-check/similarity-jaccard-prefix-check.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix-check/similarity-jaccard-prefix-check.3.ast
@@ -104,6 +104,5 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [LONG] [1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix/similarity-jaccard-prefix.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix/similarity-jaccard-prefix.3.ast
index 22cfd87..4267e4a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix/similarity-jaccard-prefix.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-prefix/similarity-jaccard-prefix.3.ast
@@ -104,6 +104,5 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [LONG] [1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_ints/similarity-jaccard-sorted-check_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_ints/similarity-jaccard-sorted-check_ints.3.ast
index c9f2183..f8ff3ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_ints/similarity-jaccard-sorted-check_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_ints/similarity-jaccard-sorted-check_ints.3.ast
@@ -87,6 +87,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_query/similarity-jaccard-sorted-check_query.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_query/similarity-jaccard-sorted-check_query.3.ast
index d22b4df..71ac309 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_query/similarity-jaccard-sorted-check_query.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_query/similarity-jaccard-sorted-check_query.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_strings/similarity-jaccard-sorted-check_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_strings/similarity-jaccard-sorted-check_strings.3.ast
index 52b7090..c4a3047 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_strings/similarity-jaccard-sorted-check_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted-check_strings/similarity-jaccard-sorted-check_strings.3.ast
@@ -132,6 +132,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_ints/similarity-jaccard-sorted_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_ints/similarity-jaccard-sorted_ints.3.ast
index 7b2a57d..76b8506 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_ints/similarity-jaccard-sorted_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_ints/similarity-jaccard-sorted_ints.3.ast
@@ -63,6 +63,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_query/similarity-jaccard-sorted_query.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_query/similarity-jaccard-sorted_query.3.ast
index 2919e6c..5151c6c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_query/similarity-jaccard-sorted_query.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_query/similarity-jaccard-sorted_query.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_strings/similarity-jaccard-sorted_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_strings/similarity-jaccard-sorted_strings.3.ast
index f630472..e346514 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_strings/similarity-jaccard-sorted_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard-sorted_strings/similarity-jaccard-sorted_strings.3.ast
@@ -96,6 +96,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_ints/similarity-jaccard_ints.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_ints/similarity-jaccard_ints.3.ast
index 54acef8..1684619 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_ints/similarity-jaccard_ints.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_ints/similarity-jaccard_ints.3.ast
@@ -96,6 +96,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_query/similarity-jaccard_query.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_query/similarity-jaccard_query.3.ast
index f78738b..9a20266 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_query/similarity-jaccard_query.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_query/similarity-jaccard_query.3.ast
@@ -7,8 +7,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [DBLP]
   ]
-  AS
-  Variable [ Name=$paper ]
+  AS Variable [ Name=$paper ]
 ]
 Let Variable [ Name=$paper_tokens ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_strings/similarity-jaccard_strings.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_strings/similarity-jaccard_strings.3.ast
index 4135197..7bb6897 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_strings/similarity-jaccard_strings.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/similarity/similarity-jaccard_strings/similarity-jaccard_strings.3.ast
@@ -129,6 +129,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation-with-filtering/cell-aggregation-with-filtering.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation-with-filtering/cell-aggregation-with-filtering.3.ast
index 06ca346..238633c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation-with-filtering/cell-aggregation-with-filtering.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation-with-filtering/cell-aggregation-with-filtering.3.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TwitterData]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Let Variable [ Name=$keywords ]
   :=
@@ -87,15 +86,11 @@
     LiteralExpr [DOUBLE] [3.0]
     LiteralExpr [DOUBLE] [3.0]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$region ]
-   AS region
-  Variable [ Name=$keywords ]
-   AS keywords
-  Variable [ Name=$t ]
-   AS t
+    region:=Variable [ Name=$region ]
+    keywords:=Variable [ Name=$keywords ]
+    t:=Variable [ Name=$t ]
   )
 
 Let Variable [ Name=$num ]
@@ -109,8 +104,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation/cell-aggregation.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation/cell-aggregation.3.ast
index e337bdd..193a14b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation/cell-aggregation.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/cell-aggregation/cell-aggregation.3.ast
@@ -20,8 +20,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [MyData]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
     ]
     Groupby
       Variable [ Name=$c ]
@@ -38,11 +37,9 @@
         LiteralExpr [DOUBLE] [5.0]
         LiteralExpr [DOUBLE] [5.0]
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$o ]
-       AS o
+        o:=Variable [ Name=$o ]
       )
 
     Let Variable [ Name=$num ]
@@ -56,8 +53,7 @@
           ]
           ]
           FROM [            Variable [ Name=#1 ]
-            AS
-            Variable [ Name=#2 ]
+            AS Variable [ Name=#2 ]
           ]
         )
       ]
@@ -70,6 +66,5 @@
 Variable [ Name=$g ]
 ]
 FROM [  Variable [ Name=$grid ]
-  AS
-  Variable [ Name=$g ]
+  AS Variable [ Name=$g ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/circle-intersect-circle/circle-intersect-circle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/circle-intersect-circle/circle-intersect-circle.3.ast
index 9050973..5040c1b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/circle-intersect-circle/circle-intersect-circle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/circle-intersect-circle/circle-intersect-circle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/create-rtree-index/create-rtree-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/create-rtree-index/create-rtree-index.3.ast
index 3ee94ac..58d5fdc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/create-rtree-index/create-rtree-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/create-rtree-index/create-rtree-index.3.ast
@@ -9,8 +9,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/distance-between-points/distance-between-points.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/distance-between-points/distance-between-points.3.ast
index db3c587..3843218 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/distance-between-points/distance-between-points.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/distance-between-points/distance-between-points.3.ast
@@ -20,8 +20,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Let Variable [ Name=$distance ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-circle/line-intersect-circle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-circle/line-intersect-circle.3.ast
index 2e49bf9..d86e0a2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-circle/line-intersect-circle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-circle/line-intersect-circle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-line/line-intersect-line.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-line/line-intersect-line.3.ast
index 139341c..61a0bec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-line/line-intersect-line.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-line/line-intersect-line.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-polygon/line-intersect-polygon.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-polygon/line-intersect-polygon.3.ast
index 95cdc4b..c61ff06 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-polygon/line-intersect-polygon.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-polygon/line-intersect-polygon.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-rectangle/line-intersect-rectangle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-rectangle/line-intersect-rectangle.3.ast
index 4ff1311..03641af 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-rectangle/line-intersect-rectangle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line-intersect-rectangle/line-intersect-rectangle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line_accessor/line_accessor.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line_accessor/line_accessor.3.ast
index 124efed..b9c5f4f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line_accessor/line_accessor.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/line_accessor/line_accessor.3.ast
@@ -21,6 +21,5 @@
 Variable [ Name=$p ]
 ]
 FROM [  Variable [ Name=$line_list ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-equals-point/point-equals-point.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-equals-point/point-equals-point.3.ast
index c435d3f..061b28e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-equals-point/point-equals-point.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-equals-point/point-equals-point.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-circle/point-in-circle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-circle/point-in-circle.3.ast
index 69ff5d8..6dd5acf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-circle/point-in-circle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-circle/point-in-circle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-polygon/point-in-polygon.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-polygon/point-in-polygon.3.ast
index 540234c..1b1c871 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-polygon/point-in-polygon.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-polygon/point-in-polygon.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-rectangle/point-in-rectangle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-rectangle/point-in-rectangle.3.ast
index 24d2e96..0ed156a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-rectangle/point-in-rectangle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-in-rectangle/point-in-rectangle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-on-line/point-on-line.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-on-line/point-on-line.3.ast
index 57740ac..d42bc6d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-on-line/point-on-line.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/point-on-line/point-on-line.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-circle/polygon-intersect-circle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-circle/polygon-intersect-circle.3.ast
index af19447..a5b2bce 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-circle/polygon-intersect-circle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-circle/polygon-intersect-circle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-polygon/polygon-intersect-polygon.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-polygon/polygon-intersect-polygon.3.ast
index 1daf590..7db7bd7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-polygon/polygon-intersect-polygon.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-polygon/polygon-intersect-polygon.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-rectangle/polygon-intersect-rectangle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-rectangle/polygon-intersect-rectangle.3.ast
index 0743d46..823b733 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-rectangle/polygon-intersect-rectangle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon-intersect-rectangle/polygon-intersect-rectangle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon_accessor/polygon_accessor.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon_accessor/polygon_accessor.3.ast
index 7c020d5..437f047 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon_accessor/polygon_accessor.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/polygon_accessor/polygon_accessor.3.ast
@@ -23,6 +23,5 @@
 Variable [ Name=$p ]
 ]
 FROM [  Variable [ Name=$polygon_list ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-circle/rectangle-intersect-circle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-circle/rectangle-intersect-circle.3.ast
index 8589e06..b32c632 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-circle/rectangle-intersect-circle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-circle/rectangle-intersect-circle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-rectangle/rectangle-intersect-rectangle.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-rectangle/rectangle-intersect-rectangle.3.ast
index 24f8602..d71d157 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-rectangle/rectangle-intersect-rectangle.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle-intersect-rectangle/rectangle-intersect-rectangle.3.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle_accessor/rectangle_accessor.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle_accessor/rectangle_accessor.3.ast
index 8499f01..84032c7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle_accessor/rectangle_accessor.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/spatial/rectangle_accessor/rectangle_accessor.3.ast
@@ -21,6 +21,5 @@
 Variable [ Name=$p ]
 ]
 FROM [  Variable [ Name=$rectangle_list ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/concat_03/concat_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/concat_03/concat_03.3.ast
index e80c1d8..79028fc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/concat_03/concat_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/concat_03/concat_03.3.ast
@@ -50,8 +50,7 @@
 ]
 ]
 FROM [  Variable [ Name=$k ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/constructor/constructor.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/constructor/constructor.3.ast
index 68da092..e2f0522 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/constructor/constructor.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/constructor/constructor.3.ast
@@ -22,6 +22,5 @@
 ]
 ]
 FROM [  Variable [ Name=$d ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/contains_01/contains_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/contains_01/contains_01.3.ast
index ae17f9b..103b8b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/contains_01/contains_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/contains_01/contains_01.3.ast
@@ -15,12 +15,10 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [STRING] [foofoo]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ,
   OrderedListConstructor [
     LiteralExpr [STRING] [barbar]
   ]
-  AS
-  Variable [ Name=$y ]
+  AS Variable [ Name=$y ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/cpttostr01/cpttostr01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/cpttostr01/cpttostr01.3.ast
index 94575ae..f3fe952 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/cpttostr01/cpttostr01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/cpttostr01/cpttostr01.3.ast
@@ -11,6 +11,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/escapes02/escapes02.1.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/escapes02/escapes02.1.ast
index 2933ff6..c2fa769 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/escapes02/escapes02.1.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/escapes02/escapes02.1.ast
Binary files differ
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/length_02/length_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/length_02/length_02.3.ast
index 6e24f11..e8efac8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/length_02/length_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/length_02/length_02.3.ast
@@ -15,6 +15,5 @@
     LiteralExpr [STRING] [seventy]
     LiteralExpr [STRING] [ninety]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches03/matches03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches03/matches03.3.ast
index ceff0d5..f20037b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches03/matches03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches03/matches03.3.ast
@@ -56,6 +56,5 @@
       LiteralExpr [STRING] [[a-z&&[^m-p]]]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches04/matches04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches04/matches04.3.ast
index afdde9e..af20adf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches04/matches04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches04/matches04.3.ast
@@ -32,6 +32,5 @@
       LiteralExpr [STRING] [[XY]]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches05/matches05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches05/matches05.3.ast
index b76cf0e..046dd8e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches05/matches05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches05/matches05.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   FunctionCall test.matches@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches06/matches06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches06/matches06.3.ast
index 4d54025..416f6d6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches06/matches06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches06/matches06.3.ast
@@ -68,6 +68,5 @@
       LiteralExpr [STRING] [[\p{Sc}]]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches11/matches11.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches11/matches11.3.ast
index 98a44a6..f2630ec 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches11/matches11.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/matches11/matches11.3.ast
@@ -25,6 +25,5 @@
       LiteralExpr [STRING] [[^a-z]]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat01/strconcat01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat01/strconcat01.3.ast
index 59d7802..5109d04 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat01/strconcat01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat01/strconcat01.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat02/strconcat02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat02/strconcat02.3.ast
index 490cabd..15439f2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat02/strconcat02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strconcat02/strconcat02.3.ast
@@ -50,6 +50,5 @@
       ]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen02/strlen02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen02/strlen02.3.ast
index c4f3ca0..540956a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen02/strlen02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen02/strlen02.3.ast
@@ -22,6 +22,5 @@
       LiteralExpr [STRING] [~!@#$%^&*()_+{}:?<>/.,';`][\]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen03/strlen03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen03/strlen03.3.ast
index 574e800..6e1db4d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen03/strlen03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/strlen03/strlen03.3.ast
@@ -11,8 +11,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr04/substr04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr04/substr04.3.ast
index d27a6e9..ccd395d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr04/substr04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr04/substr04.3.ast
@@ -57,6 +57,5 @@
       ]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr05/substr05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr05/substr05.3.ast
index 55bd101..caa541f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr05/substr05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr05/substr05.3.ast
@@ -22,8 +22,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr06/substr06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr06/substr06.3.ast
index be34cac..6248340 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr06/substr06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substr06/substr06.3.ast
@@ -12,8 +12,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testdst]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substring_01/substring_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substring_01/substring_01.3.ast
index 7be3bf5..cd3b906 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substring_01/substring_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/substring_01/substring_01.3.ast
@@ -10,6 +10,5 @@
 FROM [  OrderedListConstructor [
     LiteralExpr [STRING] [foobar]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase02/toLowerCase02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase02/toLowerCase02.3.ast
index 59fe8b6..f5e983d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase02/toLowerCase02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase02/toLowerCase02.3.ast
@@ -43,6 +43,5 @@
       LiteralExpr [STRING] [A33B2CD1EF78GHijk123LMNopqrstUVW3x2y01035Z]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase03/toLowerCase03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase03/toLowerCase03.3.ast
index a53ef3f..885501d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase03/toLowerCase03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase03/toLowerCase03.3.ast
@@ -11,8 +11,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase04/toLowerCase04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase04/toLowerCase04.3.ast
index a055e43..99a277a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase04/toLowerCase04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/string/toLowerCase04/toLowerCase04.3.ast
@@ -44,6 +44,5 @@
       ]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/01/01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/01/01.3.ast
index 0d197c6..353dcf8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/01/01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/01/01.3.ast
@@ -11,6 +11,5 @@
     LiteralExpr [LONG] [0]
     LiteralExpr [LONG] [1]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/02/02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/02/02.3.ast
index 12038e4d..4099fe1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/02/02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/02/02.3.ast
@@ -14,6 +14,5 @@
     LiteralExpr [LONG] [1]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/03/03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/03/03.3.ast
index b78033c..e09633a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/03/03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/03/03.3.ast
@@ -14,6 +14,5 @@
     LiteralExpr [LONG] [0]
     LiteralExpr [LONG] [0]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/05/05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/05/05.3.ast
index ee12851..20a4908 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/05/05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/05/05.3.ast
@@ -14,6 +14,5 @@
     LiteralExpr [LONG] [1]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/06/06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/06/06.3.ast
index 81c185b..c2bff51 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/06/06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/06/06.3.ast
@@ -14,6 +14,5 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [2]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/07/07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/07/07.3.ast
index 3eca14b..277e478 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/07/07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/subset-collection/07/07.3.ast
@@ -14,6 +14,5 @@
     LiteralExpr [LONG] [2]
     LiteralExpr [LONG] [10]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
index 2ea0e43..89cac37 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset-with-index/delete-from-loaded-dataset-with-index.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
index 93180bd..38a6ea9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/delete-from-loaded-dataset/delete-from-loaded-dataset.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
index 539d333..3a1ea0a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-empty-secondary-indexes/drop-empty-secondary-indexes.3.ast
@@ -5,8 +5,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Index]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-index/drop-index.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-index/drop-index.4.ast
index 6352064..6802467 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-index/drop-index.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/drop-index/drop-index.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t1]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/empty-load-with-index/empty-load-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/empty-load-with-index/empty-load-with-index.3.ast
index 2ab0040..d52d730 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/empty-load-with-index/empty-load-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/empty-load-with-index/empty-load-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
index 7839ec7..4a6c0e4e5f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset-with-index/insert-and-scan-dataset-with-index.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [test.employee]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset/insert-and-scan-dataset.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
index 8d78a96..bb37414 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/insert-and-scan-dataset/insert-and-scan-dataset.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [myData]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
index cafd221..ae8f04d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
@@ -25,8 +25,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -43,8 +42,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -72,8 +70,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -110,8 +107,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -128,8 +124,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -146,8 +141,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -164,8 +158,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -182,8 +175,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -193,8 +185,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -218,11 +209,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
index a8fb7a2..f814183 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-delete-rtree-secondary-index/scan-delete-rtree-secondary-index.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-persistent-to-temp/scan-insert-persistent-to-temp.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-persistent-to-temp/scan-insert-persistent-to-temp.5.ast
index 68e4dd8..bc7ec93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-persistent-to-temp/scan-insert-persistent-to-temp.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-persistent-to-temp/scan-insert-persistent-to-temp.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
index 68e4dd8..bc7ec93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-rtree-secondary-index/scan-insert-rtree-secondary-index.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-temp-to-persistent/scan-insert-temp-to-persistent.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-temp-to-persistent/scan-insert-temp-to-persistent.5.ast
index 68e4dd8..bc7ec93 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-temp-to-persistent/scan-insert-temp-to-persistent.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temp-dataset/scan-insert-temp-to-persistent/scan-insert-temp-to-persistent.5.ast
@@ -15,8 +15,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [MyMiniData]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   FunctionCall test.spatial-intersect@2[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds/insert_from_ext_ds.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds/insert_from_ext_ds.3.ast
index c8acabf..b86efca 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds/insert_from_ext_ds.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds/insert_from_ext_ds.3.ast
@@ -63,6 +63,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [testds]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.ast
index d7fa604..8b4bda8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [timeData]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_0/interval_bin_gby_0.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_0/interval_bin_gby_0.3.ast
index 2ba9eb4..913613a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_0/interval_bin_gby_0.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_0/interval_bin_gby_0.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tsdata]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$d ]
@@ -48,11 +46,9 @@
       LiteralExpr [STRING] [P20Y]
     ]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_1/interval_bin_gby_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_1/interval_bin_gby_1.3.ast
index cbd8716..b4027ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_1/interval_bin_gby_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/interval_bin_gby_1/interval_bin_gby_1.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [tsdata]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
 Groupby
   Variable [ Name=$d ]
@@ -50,11 +48,9 @@
       LiteralExpr [STRING] [PT10M]
     ]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$i ]
-   AS i
+    i:=Variable [ Name=$i ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_0/overlap_bins_gby_0.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_0/overlap_bins_gby_0.3.ast
index a6628c6..bff5906 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_0/overlap_bins_gby_0.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_0/overlap_bins_gby_0.3.ast
@@ -50,8 +50,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [tsdata]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
         Orderby
           FieldAccessor [
@@ -61,8 +60,7 @@
           ASC
 
       )
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
 ,
       FunctionCall test.overlap-bins@3[
         FunctionCall test.interval-start-from-time@2[
@@ -82,20 +80,16 @@
           LiteralExpr [STRING] [PT1H30M]
         ]
       ]
-      AS
-      Variable [ Name=$j ]
+      AS Variable [ Name=$j ]
     ]
     Groupby
       Variable [ Name=$bin ]
       :=
       Variable [ Name=$j ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$j ]
-       AS j
-      Variable [ Name=$i ]
-       AS i
+        j:=Variable [ Name=$j ]
+        i:=Variable [ Name=$i ]
       )
 
     Orderby
@@ -105,15 +99,13 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$gen0 ]
+  AS Variable [ Name=$gen0 ]
 ,
   FieldAccessor [
     Variable [ Name=$gen0 ]
     Field=i
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Let Variable [ Name=$itv ]
   :=
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_1/overlap_bins_gby_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_1/overlap_bins_gby_1.3.ast
index 6bb0ab6..93ec923 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_1/overlap_bins_gby_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_1/overlap_bins_gby_1.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -44,8 +43,7 @@
         ]
         ]
         FROM [          Variable [ Name=$i2 ]
-          AS
-          Variable [ Name=$i3 ]
+          AS Variable [ Name=$i3 ]
         ]
       )
     ]
@@ -74,8 +72,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [tsdata]
       ]
-      AS
-      Variable [ Name=$i1 ]
+      AS Variable [ Name=$i1 ]
     ]
     Orderby
       FieldAccessor [
@@ -85,8 +82,7 @@
       ASC
 
   )
-  AS
-  Variable [ Name=$i2 ]
+  AS Variable [ Name=$i2 ]
 ,
   FunctionCall test.overlap-bins@3[
     FieldAccessor [
@@ -100,20 +96,16 @@
       LiteralExpr [STRING] [PT1H30M]
     ]
   ]
-  AS
-  Variable [ Name=$j ]
+  AS Variable [ Name=$j ]
 ]
 Groupby
   Variable [ Name=$bin ]
   :=
   Variable [ Name=$j ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$j ]
-   AS j
-  Variable [ Name=$i2 ]
-   AS i2
+    j:=Variable [ Name=$j ]
+    i2:=Variable [ Name=$i2 ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_3/overlap_bins_gby_3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_3/overlap_bins_gby_3.3.ast
index f03e64f..0ff73a8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_3/overlap_bins_gby_3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/temporal/overlap_bins_gby_3/overlap_bins_gby_3.3.ast
@@ -30,8 +30,7 @@
               ]
               ]
               FROM [                Variable [ Name=#1 ]
-                AS
-                Variable [ Name=#2 ]
+                AS Variable [ Name=#2 ]
               ]
             )
           ]
@@ -41,8 +40,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [logs]
         ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
       Where
         FunctionCall multitask.interval-covers@2[
@@ -67,13 +65,10 @@
           Variable [ Name=$i ]
           Field=app
         ]
-        GROUP AS
-        Variable [ Name=#1 ]
+        GROUP AS Variable [ Name=#1 ]
         (
-        Variable [ Name=$i ]
-         AS i
-        Variable [ Name=$bin ]
-         AS bin
+          i:=Variable [ Name=$i ]
+          bin:=Variable [ Name=$bin ]
         )
 
       Orderby
@@ -88,8 +83,7 @@
             ]
             ]
             FROM [              Variable [ Name=#1 ]
-              AS
-              Variable [ Name=#3 ]
+              AS Variable [ Name=#3 ]
             ]
           )
         ]
@@ -112,8 +106,7 @@
           FROM [            FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [logs]
             ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -141,8 +134,7 @@
           FROM [            FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [logs]
             ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -154,8 +146,7 @@
       LiteralExpr [STRING] [PT1M]
     ]
   ]
-  AS
-  Variable [ Name=$bin ]
+  AS Variable [ Name=$bin ]
 ]
 Orderby
   FunctionCall multitask.get-interval-start@1[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1263.23.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1263.23.ast
index 26fbca7..8cda2fd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1263.23.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1263.23.ast
@@ -12,8 +12,7 @@
     ]
     ]
     FROM [      Variable [ Name=#1 ]
-      AS
-      Variable [ Name=#2 ]
+      AS Variable [ Name=#2 ]
     ]
   )
 ]
@@ -31,16 +30,14 @@
       ]
       ]
       FROM [        Variable [ Name=#3 ]
-        AS
-        Variable [ Name=#4 ]
+        AS Variable [ Name=#4 ]
       ]
     )
   ]
   sum
   ]
   FROM [    Variable [ Name=$t ]
-    AS
-    Variable [ Name=$k ]
+    AS Variable [ Name=$k ]
   ]
   Groupby
     Variable [ Name=$min ]
@@ -51,17 +48,12 @@
         Field=send-time
       ]
     ]
-    GROUP AS
-    Variable [ Name=#3 ]
+    GROUP AS Variable [ Name=#3 ]
     (
-    Variable [ Name=$k ]
-     AS k
-    Variable [ Name=$t ]
-     AS t
-    Variable [ Name=$h ]
-     AS h
-    Variable [ Name=#1 ]
-     AS #1
+      k:=Variable [ Name=$k ]
+      t:=Variable [ Name=$t ]
+      h:=Variable [ Name=$h ]
+      #1:=Variable [ Name=#1 ]
     )
 
   Orderby
@@ -74,8 +66,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$h ]
@@ -86,10 +77,8 @@
       Field=send-time
     ]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1329.24.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1329.24.ast
index a2c59b9..06fdeb4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1329.24.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1329.24.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1331.25.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1331.25.ast
index 05a04de..50e0060 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1331.25.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/query-ASTERIXDB-1331.25.ast
@@ -14,8 +14,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookMessages]
       ]
-      AS
-      Variable [ Name=$message ]
+      AS Variable [ Name=$message ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.10.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.10.ast
index 4897c56..4f9e4ae 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.10.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.10.ast
@@ -29,8 +29,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -61,8 +60,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.11.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.11.ast
index ba39c82..c246b60 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.11.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.11.ast
@@ -47,8 +47,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t ]
+        AS Variable [ Name=$t ]
       ]
       Let Variable [ Name=$tu ]
         :=
@@ -75,8 +74,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.12.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.12.ast
index 8f1cae6..c6a14c7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.12.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.12.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.13.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.13.ast
index f08f7f8..0bc18b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.13.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.13.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Where
   QuantifiedExpression EVERY [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.14.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.14.ast
index 3fbe06c..105f844 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.14.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.14.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$fbu ]
+      AS Variable [ Name=$fbu ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.15.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.15.ast
index 0f0d61c..616b9e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.15.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.15.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -43,11 +41,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.16.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.16.ast
index 0f0d61c..616b9e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.16.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.16.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -43,11 +41,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.17.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.17.ast
index 95168d3..aa4bb0b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.17.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.17.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -30,11 +29,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Let Variable [ Name=$c ]
@@ -48,8 +45,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.18.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.18.ast
index 6882190..f00ce81 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.18.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.18.ast
@@ -22,8 +22,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -65,8 +64,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.20.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.20.ast
index ee10149..dca454e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.20.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.20.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.22.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.22.ast
index 84f59cd..6b763c9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.22.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.22.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TweetMessages]
       ]
-      AS
-      Variable [ Name=$t ]
+      AS Variable [ Name=$t ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.4.ast
index d198d59..d26d606 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.5.ast
index 1b17ecc..b31cba5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.6.ast
index 61b959b..1d90356 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.6.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.7.ast
index 40c8c3d..b38e679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.7.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.8.ast
index 40c8c3d..b38e679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.8.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.9.ast
index d592be5..1d228cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite-open/tinysocial-suite.9.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [FacebookMessages]
         ]
-        AS
-        Variable [ Name=$message ]
+        AS Variable [ Name=$message ]
       ]
       Where
         OperatorExpr [
@@ -52,8 +51,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/query-ASTERIXDB-1263.23.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/query-ASTERIXDB-1263.23.ast
index 26fbca7..8cda2fd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/query-ASTERIXDB-1263.23.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/query-ASTERIXDB-1263.23.ast
@@ -12,8 +12,7 @@
     ]
     ]
     FROM [      Variable [ Name=#1 ]
-      AS
-      Variable [ Name=#2 ]
+      AS Variable [ Name=#2 ]
     ]
   )
 ]
@@ -31,16 +30,14 @@
       ]
       ]
       FROM [        Variable [ Name=#3 ]
-        AS
-        Variable [ Name=#4 ]
+        AS Variable [ Name=#4 ]
       ]
     )
   ]
   sum
   ]
   FROM [    Variable [ Name=$t ]
-    AS
-    Variable [ Name=$k ]
+    AS Variable [ Name=$k ]
   ]
   Groupby
     Variable [ Name=$min ]
@@ -51,17 +48,12 @@
         Field=send-time
       ]
     ]
-    GROUP AS
-    Variable [ Name=#3 ]
+    GROUP AS Variable [ Name=#3 ]
     (
-    Variable [ Name=$k ]
-     AS k
-    Variable [ Name=$t ]
-     AS t
-    Variable [ Name=$h ]
-     AS h
-    Variable [ Name=#1 ]
-     AS #1
+      k:=Variable [ Name=$k ]
+      t:=Variable [ Name=$t ]
+      h:=Variable [ Name=$h ]
+      #1:=Variable [ Name=#1 ]
     )
 
   Orderby
@@ -74,8 +66,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$h ]
@@ -86,10 +77,8 @@
       Field=send-time
     ]
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.10.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.10.ast
index 4897c56..4f9e4ae 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.10.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.10.ast
@@ -29,8 +29,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -61,8 +60,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.11.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.11.ast
index ba39c82..c246b60 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.11.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.11.ast
@@ -47,8 +47,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t ]
+        AS Variable [ Name=$t ]
       ]
       Let Variable [ Name=$tu ]
         :=
@@ -75,8 +74,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.12.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.12.ast
index 8f1cae6..c6a14c7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.12.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.12.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Where
   QuantifiedExpression SOME [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.13.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.13.ast
index f08f7f8..0bc18b9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.13.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.13.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$fbu ]
+  AS Variable [ Name=$fbu ]
 ]
 Where
   QuantifiedExpression EVERY [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.14.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.14.ast
index 3fbe06c..105f844 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.14.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.14.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookUsers]
       ]
-      AS
-      Variable [ Name=$fbu ]
+      AS Variable [ Name=$fbu ]
     ]
   )
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.15.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.15.ast
index 0f0d61c..616b9e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.15.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.15.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -43,11 +41,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.16.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.16.ast
index 0f0d61c..616b9e4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.16.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.16.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -43,11 +41,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.17.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.17.ast
index 95168d3..aa4bb0b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.17.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.17.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$uid ]
@@ -30,11 +29,9 @@
     ]
     Field=screen-name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Let Variable [ Name=$c ]
@@ -48,8 +45,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.18.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.18.ast
index 6882190..f00ce81 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.18.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.18.ast
@@ -22,8 +22,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [TweetMessages]
         ]
-        AS
-        Variable [ Name=$t2 ]
+        AS Variable [ Name=$t2 ]
       ]
       Where
         OperatorExpr [
@@ -65,8 +64,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.20.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.20.ast
index ee10149..dca454e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.20.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.20.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TweetMessages]
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.22.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.22.ast
index 84f59cd..6b763c9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.22.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.22.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [TweetMessages]
       ]
-      AS
-      Variable [ Name=$t ]
+      AS Variable [ Name=$t ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.24.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.24.ast
index a2c59b9..06fdeb4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.24.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.24.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.25.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.25.ast
index 05a04de..50e0060 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.25.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.25.ast
@@ -14,8 +14,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [FacebookMessages]
       ]
-      AS
-      Variable [ Name=$message ]
+      AS Variable [ Name=$message ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.4.ast
index d198d59..d26d606 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.4.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.5.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.5.ast
index 1b17ecc..b31cba5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.5.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.5.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.6.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.6.ast
index 61b959b..1d90356 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.6.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.6.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.7.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.7.ast
index 40c8c3d..b38e679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.7.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.7.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.8.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.8.ast
index 40c8c3d..b38e679 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.8.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.8.ast
@@ -23,14 +23,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookMessages]
   ]
-  AS
-  Variable [ Name=$message ]
+  AS Variable [ Name=$message ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.9.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.9.ast
index d592be5..1d228cf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.9.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tinysocial/tinysocial-suite/tinysocial-suite.9.ast
@@ -23,8 +23,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [FacebookMessages]
         ]
-        AS
-        Variable [ Name=$message ]
+        AS Variable [ Name=$message ]
       ]
       Where
         OperatorExpr [
@@ -52,8 +51,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [FacebookUsers]
   ]
-  AS
-  Variable [ Name=$user ]
+  AS Variable [ Name=$user ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_01/counthashed-gram-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_01/counthashed-gram-tokens_01.3.ast
index e8e98ba..1a0f2bfc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_01/counthashed-gram-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_01/counthashed-gram-tokens_01.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_02/counthashed-gram-tokens_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_02/counthashed-gram-tokens_02.3.ast
index 3ea7057..da0deb1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_02/counthashed-gram-tokens_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-gram-tokens_02/counthashed-gram-tokens_02.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-word-tokens_01/counthashed-word-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-word-tokens_01/counthashed-word-tokens_01.3.ast
index 38c2cb2..3e31997 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-word-tokens_01/counthashed-word-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/counthashed-word-tokens_01/counthashed-word-tokens_01.3.ast
@@ -13,6 +13,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_01/gram-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_01/gram-tokens_01.3.ast
index 1f6fff0..ffcb3aa 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_01/gram-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_01/gram-tokens_01.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_02/gram-tokens_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_02/gram-tokens_02.3.ast
index 3e3cf03..38fa7a41 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_02/gram-tokens_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/gram-tokens_02/gram-tokens_02.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_01/hashed-gram-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_01/hashed-gram-tokens_01.3.ast
index adf1b62..3fe7f85 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_01/hashed-gram-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_01/hashed-gram-tokens_01.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_02/hashed-gram-tokens_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_02/hashed-gram-tokens_02.3.ast
index f31621f..650c19b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_02/hashed-gram-tokens_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-gram-tokens_02/hashed-gram-tokens_02.3.ast
@@ -15,6 +15,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-word-tokens_01/hashed-word-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-word-tokens_01/hashed-word-tokens_01.3.ast
index 0308da3..686b329 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-word-tokens_01/hashed-word-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/hashed-word-tokens_01/hashed-word-tokens_01.3.ast
@@ -13,6 +13,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_01/word-tokens_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_01/word-tokens_01.3.ast
index 98d2f14..7e5a36d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_01/word-tokens_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_01/word-tokens_01.3.ast
@@ -12,6 +12,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_02/word-tokens_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_02/word-tokens_02.3.ast
index a81280f..ffc58ee 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_02/word-tokens_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tokenizers/word-tokens_02/word-tokens_02.3.ast
@@ -12,6 +12,5 @@
 Variable [ Name=$token ]
 ]
 FROM [  Variable [ Name=$tokens ]
-  AS
-  Variable [ Name=$token ]
+  AS Variable [ Name=$token ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
index cafd221..ae8f04d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
@@ -25,8 +25,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -43,8 +42,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -72,8 +70,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -110,8 +107,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -128,8 +124,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -146,8 +141,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -164,8 +158,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -182,8 +175,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -193,8 +185,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -218,11 +209,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
index bcdbaa0..0fa04eb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
@@ -78,8 +78,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Part ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
 ,
       (
         SELECT ELEMENT [
@@ -151,8 +150,7 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -216,8 +214,7 @@
             ]
             ]
             FROM [              Variable [ Name=$Supplier ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -241,12 +238,10 @@
                 ]
                 ]
                 FROM [                  Variable [ Name=$Region ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
 ,
                   Variable [ Name=$Nation ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
                 ]
                 Where
                   OperatorExpr [
@@ -272,8 +267,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$rn ]
+              AS Variable [ Name=$rn ]
             ]
             Where
               OperatorExpr [
@@ -288,8 +282,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$srn ]
+          AS Variable [ Name=$srn ]
         ]
         Where
           OperatorExpr [
@@ -304,8 +297,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pssrn ]
+      AS Variable [ Name=$pssrn ]
     ]
     Where
       OperatorExpr [
@@ -353,8 +345,7 @@
             ]
             ]
             FROM [              Variable [ Name=$pssrn ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -362,8 +353,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Part ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
 ,
       (
         SELECT ELEMENT [
@@ -435,8 +425,7 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -500,8 +489,7 @@
             ]
             ]
             FROM [              Variable [ Name=$Supplier ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -525,12 +513,10 @@
                 ]
                 ]
                 FROM [                  Variable [ Name=$Region ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
 ,
                   Variable [ Name=$Nation ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
                 ]
                 Where
                   OperatorExpr [
@@ -556,8 +542,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$rn ]
+              AS Variable [ Name=$rn ]
             ]
             Where
               OperatorExpr [
@@ -572,8 +557,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$srn ]
+          AS Variable [ Name=$srn ]
         ]
         Where
           OperatorExpr [
@@ -588,8 +572,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pssrn ]
+      AS Variable [ Name=$pssrn ]
     ]
     Where
       OperatorExpr [
@@ -695,13 +678,11 @@
 ]
 FROM [  FunctionCall tpch.tmp2@0[
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ,
   FunctionCall tpch.tmp1@0[
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
index 5bb4ef8..4b04e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
@@ -27,20 +27,17 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -118,15 +115,11 @@
     Variable [ Name=$o ]
     Field=o_shippriority
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -151,8 +144,7 @@
       ]
       ]
       FROM [        Variable [ Name=$l ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q04_order_priority/q04_order_priority.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q04_order_priority/q04_order_priority.3.ast
index bf4a408..e50b0b0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q04_order_priority/q04_order_priority.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q04_order_priority/q04_order_priority.3.ast
@@ -14,8 +14,7 @@
     ]
     ]
     FROM [      Variable [ Name=$LineItem ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
@@ -52,8 +51,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -63,13 +61,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall tpch.tmp@0[
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Where
   OperatorExpr [
@@ -110,13 +106,10 @@
     Variable [ Name=$o ]
     Field=o_orderpriority
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$o ]
-   AS o
+    t:=Variable [ Name=$t ]
+    o:=Variable [ Name=$o ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q05_local_supplier_volume/q05_local_supplier_volume.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
index 92d992a..fefccd1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   (
     SELECT ELEMENT [
@@ -68,8 +67,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -119,8 +117,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -154,8 +151,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Supplier]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -181,14 +177,12 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Nation]
                   ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Region]
                   ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
                 ]
                 Where
                   OperatorExpr [
@@ -203,8 +197,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$n1 ]
+              AS Variable [ Name=$n1 ]
             ]
             Where
               OperatorExpr [
@@ -219,8 +212,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$s1 ]
+          AS Variable [ Name=$s1 ]
         ]
         Where
           OperatorExpr [
@@ -235,8 +227,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l1 ]
+      AS Variable [ Name=$l1 ]
     ]
     Where
       OperatorExpr [
@@ -271,8 +262,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ]
 Where
   OperatorExpr [
@@ -307,13 +297,10 @@
     Variable [ Name=$o1 ]
     Field=n_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o1 ]
-   AS o1
-  Variable [ Name=$c ]
-   AS c
+    o1:=Variable [ Name=$o1 ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -338,8 +325,7 @@
       ]
       ]
       FROM [        Variable [ Name=$o1 ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
index c8abf8d..e60c9f8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
@@ -23,8 +23,7 @@
     ]
     ]
     FROM [      Variable [ Name=#1 ]
-      AS
-      Variable [ Name=#2 ]
+      AS Variable [ Name=#2 ]
     ]
   )
 ]
@@ -33,8 +32,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q07_volume_shipping/q07_volume_shipping.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q07_volume_shipping/q07_volume_shipping.3.ast
index ac8fbda..f7aeb0f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q07_volume_shipping/q07_volume_shipping.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q07_volume_shipping/q07_volume_shipping.3.ast
@@ -38,12 +38,10 @@
     ]
     ]
     FROM [      Variable [ Name=$Nation ]
-      AS
-      Variable [ Name=$n1 ]
+      AS Variable [ Name=$n1 ]
 ,
       Variable [ Name=$Nation ]
-      AS
-      Variable [ Name=$n2 ]
+      AS Variable [ Name=$n2 ]
     ]
     Where
       OperatorExpr [
@@ -231,14 +229,12 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [LineItem]
               ]
-              AS
-              Variable [ Name=$l ]
+              AS Variable [ Name=$l ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Orders]
               ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
             Where
               OperatorExpr [
@@ -273,14 +269,12 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$lo ]
+          AS Variable [ Name=$lo ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
         ]
         Where
           OperatorExpr [
@@ -295,14 +289,12 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$loc ]
+      AS Variable [ Name=$loc ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Supplier]
       ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -317,13 +309,11 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locs ]
+  AS Variable [ Name=$locs ]
 ,
   FunctionCall tpch.q7_volume_shipping_tmp@0[
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Let Variable [ Name=$l_year0 ]
   :=
@@ -375,15 +365,11 @@
   Variable [ Name=$l_year ]
   :=
   Variable [ Name=$l_year0 ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l_year0 ]
-   AS l_year0
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$locs ]
-   AS locs
+    l_year0:=Variable [ Name=$l_year0 ]
+    t:=Variable [ Name=$t ]
+    locs:=Variable [ Name=$locs ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -408,8 +394,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locs ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q08_national_market_share/q08_national_market_share.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q08_national_market_share/q08_national_market_share.3.ast
index eca3549..279175b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q08_national_market_share/q08_national_market_share.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q08_national_market_share/q08_national_market_share.3.ast
@@ -33,8 +33,7 @@
           ]
           ]
           FROM [            Variable [ Name=$t ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -48,8 +47,7 @@
           ]
           ]
           FROM [            Variable [ Name=$t ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -142,8 +140,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Supplier]
           ]
-          AS
-          Variable [ Name=$s ]
+          AS Variable [ Name=$s ]
 ,
           (
             SELECT ELEMENT [
@@ -230,8 +227,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [LineItem]
                   ]
-                  AS
-                  Variable [ Name=$l ]
+                  AS Variable [ Name=$l ]
 ,
                   (
                     SELECT ELEMENT [
@@ -257,8 +253,7 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Orders]
                       ]
-                      AS
-                      Variable [ Name=$o ]
+                      AS Variable [ Name=$o ]
 ,
                       (
                         SELECT ELEMENT [
@@ -276,8 +271,7 @@
                         FROM [                          FunctionCall Metadata.dataset@1[
                             LiteralExpr [STRING] [Customer]
                           ]
-                          AS
-                          Variable [ Name=$c ]
+                          AS Variable [ Name=$c ]
 ,
                           (
                             SELECT ELEMENT [
@@ -295,14 +289,12 @@
                             FROM [                              FunctionCall Metadata.dataset@1[
                                 LiteralExpr [STRING] [Nation]
                               ]
-                              AS
-                              Variable [ Name=$n1 ]
+                              AS Variable [ Name=$n1 ]
 ,
                               FunctionCall Metadata.dataset@1[
                                 LiteralExpr [STRING] [Region]
                               ]
-                              AS
-                              Variable [ Name=$r1 ]
+                              AS Variable [ Name=$r1 ]
                             ]
                             Where
                               OperatorExpr [
@@ -328,8 +320,7 @@
                                 ]
                               ]
                           )
-                          AS
-                          Variable [ Name=$nr ]
+                          AS Variable [ Name=$nr ]
                         ]
                         Where
                           OperatorExpr [
@@ -344,8 +335,7 @@
                             ]
                           ]
                       )
-                      AS
-                      Variable [ Name=$nrc ]
+                      AS Variable [ Name=$nrc ]
                     ]
                     Where
                       OperatorExpr [
@@ -360,8 +350,7 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$nrco ]
+                  AS Variable [ Name=$nrco ]
                 ]
                 Where
                   OperatorExpr [
@@ -396,14 +385,12 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$lnrco ]
+              AS Variable [ Name=$lnrco ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Part]
               ]
-              AS
-              Variable [ Name=$p ]
+              AS Variable [ Name=$p ]
             ]
             Where
               OperatorExpr [
@@ -429,8 +416,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$lnrcop ]
+          AS Variable [ Name=$lnrcop ]
         ]
         Where
           OperatorExpr [
@@ -445,14 +431,12 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$slnrcop ]
+      AS Variable [ Name=$slnrcop ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n2 ]
+      AS Variable [ Name=$n2 ]
     ]
     Let Variable [ Name=$o_year ]
       :=
@@ -475,8 +459,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$year ]
@@ -485,11 +468,9 @@
     Variable [ Name=$t ]
     Field=year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
index e455c20..bce73f5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
@@ -24,8 +24,7 @@
         ]
         ]
         FROM [          Variable [ Name=$profit ]
-          AS
-          Variable [ Name=$pr ]
+          AS Variable [ Name=$pr ]
         ]
       )
     ]
@@ -58,8 +57,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -117,8 +115,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Part]
           ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
 ,
           (
             SELECT ELEMENT [
@@ -184,8 +181,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Partsupp]
               ]
-              AS
-              Variable [ Name=$ps ]
+              AS Variable [ Name=$ps ]
 ,
               (
                 SELECT ELEMENT [
@@ -272,14 +268,12 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Supplier]
                       ]
-                      AS
-                      Variable [ Name=$s ]
+                      AS Variable [ Name=$s ]
 ,
                       FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Nation]
                       ]
-                      AS
-                      Variable [ Name=$n ]
+                      AS Variable [ Name=$n ]
                     ]
                     Where
                       OperatorExpr [
@@ -294,14 +288,12 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$s1 ]
+                  AS Variable [ Name=$s1 ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [LineItem]
                   ]
-                  AS
-                  Variable [ Name=$l ]
+                  AS Variable [ Name=$l ]
                 ]
                 Where
                   OperatorExpr [
@@ -316,8 +308,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$l1 ]
+              AS Variable [ Name=$l1 ]
             ]
             Where
               OperatorExpr [
@@ -346,8 +337,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$l2 ]
+          AS Variable [ Name=$l2 ]
         ]
         Where
           OperatorExpr [
@@ -372,8 +362,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l3 ]
+      AS Variable [ Name=$l3 ]
     ]
     Let Variable [ Name=$amount ]
       :=
@@ -427,8 +416,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$profit ]
+  AS Variable [ Name=$profit ]
 ]
 Groupby
   Variable [ Name=$nation ]
@@ -443,11 +431,9 @@
     Variable [ Name=$profit ]
     Field=o_year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$profit ]
-   AS profit
+    profit:=Variable [ Name=$profit ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item/q10_returned_item.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item/q10_returned_item.3.ast
index ff09340..da3761f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item/q10_returned_item.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item/q10_returned_item.3.ast
@@ -124,8 +124,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       (
         SELECT ELEMENT [
@@ -199,20 +198,17 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -261,8 +257,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$ocn ]
+      AS Variable [ Name=$ocn ]
     ]
     Where
       OperatorExpr [
@@ -288,8 +283,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locn ]
+  AS Variable [ Name=$locn ]
 ]
 Groupby
   Variable [ Name=$c_custkey ]
@@ -334,11 +328,9 @@
     Variable [ Name=$locn ]
     Field=c_comment
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$locn ]
-   AS locn
+    locn:=Variable [ Name=$locn ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -363,8 +355,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locn ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item_int64/q10_returned_item_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item_int64/q10_returned_item_int64.3.ast
index ff09340..da3761f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item_int64/q10_returned_item_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q10_returned_item_int64/q10_returned_item_int64.3.ast
@@ -124,8 +124,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       (
         SELECT ELEMENT [
@@ -199,20 +198,17 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -261,8 +257,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$ocn ]
+      AS Variable [ Name=$ocn ]
     ]
     Where
       OperatorExpr [
@@ -288,8 +283,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locn ]
+  AS Variable [ Name=$locn ]
 ]
 Groupby
   Variable [ Name=$c_custkey ]
@@ -334,11 +328,9 @@
     Variable [ Name=$locn ]
     Field=c_comment
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$locn ]
-   AS locn
+    locn:=Variable [ Name=$locn ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -363,8 +355,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locn ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q11_important_stock/q11_important_stock.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q11_important_stock/q11_important_stock.3.ast
index a3e3830..14caa44 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q11_important_stock/q11_important_stock.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q11_important_stock/q11_important_stock.3.ast
@@ -20,8 +20,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Partsupp]
         ]
-        AS
-        Variable [ Name=$ps ]
+        AS Variable [ Name=$ps ]
 ,
         (
           SELECT ELEMENT [
@@ -39,14 +38,12 @@
           FROM [            FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [Supplier]
             ]
-            AS
-            Variable [ Name=$s ]
+            AS Variable [ Name=$s ]
 ,
             FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [Nation]
             ]
-            AS
-            Variable [ Name=$n ]
+            AS Variable [ Name=$n ]
           ]
           Where
             OperatorExpr [
@@ -61,8 +58,7 @@
               ]
             ]
         )
-        AS
-        Variable [ Name=$sn ]
+        AS Variable [ Name=$sn ]
       ]
       Where
         OperatorExpr [
@@ -125,8 +121,7 @@
             ]
             ]
             FROM [              Variable [ Name=$ps ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -136,8 +131,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Partsupp]
       ]
-      AS
-      Variable [ Name=$ps ]
+      AS Variable [ Name=$ps ]
 ,
       (
         SELECT ELEMENT [
@@ -155,14 +149,12 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Supplier]
           ]
-          AS
-          Variable [ Name=$s ]
+          AS Variable [ Name=$s ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -177,8 +169,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$sn ]
+      AS Variable [ Name=$sn ]
     ]
     Where
       OperatorExpr [
@@ -199,20 +190,15 @@
         Variable [ Name=$ps ]
         Field=ps_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$sn ]
-       AS sn
-      Variable [ Name=$ps ]
-       AS ps
-      Variable [ Name=$sum ]
-       AS sum
+        sn:=Variable [ Name=$sn ]
+        ps:=Variable [ Name=$ps ]
+        sum:=Variable [ Name=$sum ]
       )
 
   )
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q12_shipping/q12_shipping.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q12_shipping/q12_shipping.3.ast
index 6150bd4..b1fee8a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q12_shipping/q12_shipping.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q12_shipping/q12_shipping.3.ast
@@ -40,8 +40,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -79,8 +78,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -90,14 +88,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
@@ -182,13 +178,10 @@
     Variable [ Name=$l ]
     Field=l_shipmode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$l ]
-   AS l
+    o:=Variable [ Name=$o ]
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q13_customer_distribution/q13_customer_distribution.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q13_customer_distribution/q13_customer_distribution.3.ast
index 040038c..648a33b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q13_customer_distribution/q13_customer_distribution.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q13_customer_distribution/q13_customer_distribution.3.ast
@@ -35,8 +35,7 @@
             ]
             ]
             FROM [              Variable [ Name=$co ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -68,8 +67,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Orders]
                   ]
-                  AS
-                  Variable [ Name=$o ]
+                  AS Variable [ Name=$o ]
                 ]
                 Where
                   OperatorExpr [
@@ -103,12 +101,10 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
         ]
       )
-      AS
-      Variable [ Name=$co ]
+      AS Variable [ Name=$co ]
     ]
     Groupby
       Variable [ Name=$c_custkey ]
@@ -117,16 +113,13 @@
         Variable [ Name=$co ]
         Field=c_custkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$co ]
-       AS co
+        co:=Variable [ Name=$co ]
       )
 
   )
-  AS
-  Variable [ Name=$gco ]
+  AS Variable [ Name=$gco ]
 ]
 Groupby
   Variable [ Name=$c_count ]
@@ -135,11 +128,9 @@
     Variable [ Name=$gco ]
     Field=c_count
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$gco ]
-   AS gco
+    gco:=Variable [ Name=$gco ]
   )
 
 Let Variable [ Name=$custdist ]
@@ -153,8 +144,7 @@
       ]
       ]
       FROM [        Variable [ Name=#2 ]
-        AS
-        Variable [ Name=#3 ]
+        AS Variable [ Name=#3 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q14_promotion_effect/q14_promotion_effect.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q14_promotion_effect/q14_promotion_effect.3.ast
index 86eb727..1f8c630 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q14_promotion_effect/q14_promotion_effect.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q14_promotion_effect/q14_promotion_effect.3.ast
@@ -36,8 +36,7 @@
       ]
       ]
       FROM [        Variable [ Name=$lp ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
@@ -62,8 +61,7 @@
       ]
       ]
       FROM [        Variable [ Name=$lp ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
@@ -72,14 +70,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Part]
   ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ]
 Let Variable [ Name=$lp ]
   :=
@@ -145,14 +141,10 @@
   Variable [ Name=$t ]
   :=
   LiteralExpr [LONG] [1]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$lp ]
-   AS lp
-  Variable [ Name=$p ]
-   AS p
-  Variable [ Name=$l ]
-   AS l
+    lp:=Variable [ Name=$lp ]
+    p:=Variable [ Name=$p ]
+    l:=Variable [ Name=$l ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q15_top_supplier/q15_top_supplier.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q15_top_supplier/q15_top_supplier.3.ast
index 8e0bd84..0645c36 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q15_top_supplier/q15_top_supplier.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q15_top_supplier/q15_top_supplier.3.ast
@@ -31,8 +31,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -40,8 +39,7 @@
     ]
     ]
     FROM [      Variable [ Name=$LineItem ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
@@ -87,8 +85,7 @@
       ]
       FROM [        FunctionCall tpch.revenue@0[
         ]
-        AS
-        Variable [ Name=$r2 ]
+        AS Variable [ Name=$r2 ]
       ]
     )
   ]
@@ -139,13 +136,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Supplier]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   FunctionCall tpch.revenue@0[
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
index 9fb5785..44b1f8d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
@@ -75,12 +75,10 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           Variable [ Name=$Part ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
         ]
         Where
           OperatorExpr [
@@ -116,12 +114,10 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$psp ]
+      AS Variable [ Name=$psp ]
 ,
       Variable [ Name=$Supplier ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -202,8 +198,7 @@
     ]
     FROM [      FunctionCall tpch.tmp@0[
       ]
-      AS
-      Variable [ Name=$t ]
+      AS Variable [ Name=$t ]
     ]
     Where
       OperatorExpr [
@@ -304,16 +299,13 @@
         Variable [ Name=$t ]
         Field=ps_suppkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$t ]
-       AS t
+        t:=Variable [ Name=$t ]
       )
 
   )
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Groupby
   Variable [ Name=$p_brand ]
@@ -334,11 +326,9 @@
     Variable [ Name=$t2 ]
     Field=p_size
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$t2 ]
-   AS t2
+    t2:=Variable [ Name=$t2 ]
   )
 
 Let Variable [ Name=$supplier_cnt ]
@@ -352,8 +342,7 @@
       ]
       ]
       FROM [        Variable [ Name=$t2 ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_large_gby_variant/q17_large_gby_variant.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_large_gby_variant/q17_large_gby_variant.3.ast
index fb8f2cd..4c84266 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_large_gby_variant/q17_large_gby_variant.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_large_gby_variant/q17_large_gby_variant.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -40,8 +39,7 @@
           ]
           ]
           FROM [            Variable [ Name=$l ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -59,8 +57,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -77,8 +74,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -113,8 +108,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -131,8 +125,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -149,8 +142,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -167,8 +159,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -185,8 +176,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -203,8 +193,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -214,8 +203,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Groupby
   Variable [ Name=$l_partkey ]
@@ -224,11 +212,9 @@
     Variable [ Name=$l ]
     Field=l_partkey
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_small_quantity_order_revenue/q17_small_quantity_order_revenue.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_small_quantity_order_revenue/q17_small_quantity_order_revenue.3.ast
index cffd853..b8874cd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_small_quantity_order_revenue/q17_small_quantity_order_revenue.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q17_small_quantity_order_revenue/q17_small_quantity_order_revenue.3.ast
@@ -23,8 +23,7 @@
               ]
               ]
               FROM [                Variable [ Name=$l ]
-                AS
-                Variable [ Name=$i ]
+                AS Variable [ Name=$i ]
               ]
             )
           ]
@@ -33,8 +32,7 @@
     ]
     ]
     FROM [      Variable [ Name=$LineItem ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Groupby
       Variable [ Name=$l_partkey ]
@@ -61,19 +59,16 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [LineItem]
         ]
-        AS
-        Variable [ Name=$l ]
+        AS Variable [ Name=$l ]
 ,
         FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Part]
         ]
-        AS
-        Variable [ Name=$p ]
+        AS Variable [ Name=$p ]
 ,
         FunctionCall tpch.tmp@0[
         ]
-        AS
-        Variable [ Name=$t ]
+        AS Variable [ Name=$t ]
       ]
       Where
         OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q18_large_volume_customer/q18_large_volume_customer.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q18_large_volume_customer/q18_large_volume_customer.3.ast
index f8e71b5..8f4559e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q18_large_volume_customer/q18_large_volume_customer.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q18_large_volume_customer/q18_large_volume_customer.3.ast
@@ -39,8 +39,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$j ]
+          AS Variable [ Name=$j ]
         ]
       )
     ]
@@ -50,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   (
     SELECT ELEMENT [
@@ -79,8 +76,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -90,8 +86,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -100,26 +95,20 @@
         Variable [ Name=$l ]
         Field=l_orderkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$l ]
-       AS l
-      Variable [ Name=$o ]
-       AS o
-      Variable [ Name=$c ]
-       AS c
+        l:=Variable [ Name=$l ]
+        o:=Variable [ Name=$o ]
+        c:=Variable [ Name=$c ]
       )
 
   )
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -201,17 +190,12 @@
     Variable [ Name=$o ]
     Field=o_totalprice
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    t:=Variable [ Name=$t ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q19_discounted_revenue/q19_discounted_revenue.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q19_discounted_revenue/q19_discounted_revenue.3.ast
index 1de3822..156754d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q19_discounted_revenue/q19_discounted_revenue.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q19_discounted_revenue/q19_discounted_revenue.3.ast
@@ -24,14 +24,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Part]
       ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q20_potential_part_promotion/q20_potential_part_promotion.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
index 6029e08..9993401 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
@@ -61,8 +61,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=$l ]
-                    AS
-                    Variable [ Name=$i ]
+                    AS Variable [ Name=$i ]
                   ]
                 )
               ]
@@ -73,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Groupby
           Variable [ Name=$l_partkey ]
@@ -89,16 +87,13 @@
             Variable [ Name=$l ]
             Field=l_suppkey
           ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$l ]
-           AS l
+            l:=Variable [ Name=$l ]
           )
 
       )
-      AS
-      Variable [ Name=$t2 ]
+      AS Variable [ Name=$t2 ]
 ,
       (
         SELECT ELEMENT [
@@ -132,8 +127,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Partsupp]
           ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -151,12 +145,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Part]
               ]
-              AS
-              Variable [ Name=$p ]
+              AS Variable [ Name=$p ]
             ]
           )
-          AS
-          Variable [ Name=$t1 ]
+          AS Variable [ Name=$t1 ]
         ]
         Where
           OperatorExpr [
@@ -171,8 +163,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pst1 ]
+      AS Variable [ Name=$pst1 ]
     ]
     Where
       OperatorExpr [
@@ -213,8 +204,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t3 ]
+  AS Variable [ Name=$t3 ]
 ,
   (
     SELECT ELEMENT [
@@ -248,14 +238,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Supplier]
       ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -270,8 +258,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t4 ]
+  AS Variable [ Name=$t4 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
index c756a58..6d09b11 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
@@ -20,8 +20,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -38,8 +37,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -62,8 +60,7 @@
         ]
         ]
         FROM [          Variable [ Name=$LineItem ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Groupby
           Variable [ Name=$l_orderkey1 ]
@@ -80,8 +77,7 @@
           ]
 
       )
-      AS
-      Variable [ Name=$l2 ]
+      AS Variable [ Name=$l2 ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -115,8 +111,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -133,8 +128,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -157,8 +151,7 @@
         ]
         ]
         FROM [          Variable [ Name=$LineItem ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Where
           OperatorExpr [
@@ -187,8 +180,7 @@
           ]
 
       )
-      AS
-      Variable [ Name=$l2 ]
+      AS Variable [ Name=$l2 ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -293,8 +285,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -320,14 +311,12 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Nation]
               ]
-              AS
-              Variable [ Name=$n ]
+              AS Variable [ Name=$n ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Supplier]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
             ]
             Where
               OperatorExpr [
@@ -342,19 +331,16 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$ns ]
+          AS Variable [ Name=$ns ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall tpch.tmp1@0[
           ]
-          AS
-          Variable [ Name=$t1 ]
+          AS Variable [ Name=$t1 ]
         ]
         Where
           OperatorExpr [
@@ -409,13 +395,11 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$t3 ]
+      AS Variable [ Name=$t3 ]
 ,
       FunctionCall tpch.tmp2@0[
       ]
-      AS
-      Variable [ Name=$t2 ]
+      AS Variable [ Name=$t2 ]
     ]
     Where
       OperatorExpr [
@@ -441,8 +425,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t4 ]
+  AS Variable [ Name=$t4 ]
 ]
 Groupby
   Variable [ Name=$s_name ]
@@ -451,11 +434,9 @@
     Variable [ Name=$t4 ]
     Field=s_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t4 ]
-   AS t4
+    t4:=Variable [ Name=$t4 ]
   )
 
 Let Variable [ Name=$numwait ]
@@ -469,8 +450,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
index 063914d..5032a49 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
@@ -34,8 +34,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Customer ]
-      AS
-      Variable [ Name=$c ]
+      AS Variable [ Name=$c ]
     ]
   )
 }
@@ -54,8 +53,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$c ]
+        AS Variable [ Name=$c ]
       ]
       Where
         OperatorExpr [
@@ -87,8 +85,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -105,8 +102,7 @@
         ]
         ]
         FROM [          Variable [ Name=$ct ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -115,8 +111,7 @@
 ]
 FROM [  FunctionCall tpch.q22_customer_tmp@0[
   ]
-  AS
-  Variable [ Name=$ct ]
+  AS Variable [ Name=$ct ]
 ]
 Where
   OperatorExpr [
@@ -134,13 +129,10 @@
     Variable [ Name=$ct ]
     Field=cntrycode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$ct ]
-   AS ct
-  Variable [ Name=$avg ]
-   AS avg
+    ct:=Variable [ Name=$ct ]
+    avg:=Variable [ Name=$avg ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue601/query-issue601.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue601/query-issue601.3.ast
index 85c3c0d..b0c1038 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue601/query-issue601.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue601/query-issue601.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Groupby
   Variable [ Name=$l_linenumber ]
@@ -40,10 +38,8 @@
     Variable [ Name=$l ]
     Field=l_linenumber
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue638/query-issue638.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue638/query-issue638.3.ast
index e455c20..bce73f5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue638/query-issue638.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue638/query-issue638.3.ast
@@ -24,8 +24,7 @@
         ]
         ]
         FROM [          Variable [ Name=$profit ]
-          AS
-          Variable [ Name=$pr ]
+          AS Variable [ Name=$pr ]
         ]
       )
     ]
@@ -58,8 +57,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -117,8 +115,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Part]
           ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
 ,
           (
             SELECT ELEMENT [
@@ -184,8 +181,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Partsupp]
               ]
-              AS
-              Variable [ Name=$ps ]
+              AS Variable [ Name=$ps ]
 ,
               (
                 SELECT ELEMENT [
@@ -272,14 +268,12 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Supplier]
                       ]
-                      AS
-                      Variable [ Name=$s ]
+                      AS Variable [ Name=$s ]
 ,
                       FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Nation]
                       ]
-                      AS
-                      Variable [ Name=$n ]
+                      AS Variable [ Name=$n ]
                     ]
                     Where
                       OperatorExpr [
@@ -294,14 +288,12 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$s1 ]
+                  AS Variable [ Name=$s1 ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [LineItem]
                   ]
-                  AS
-                  Variable [ Name=$l ]
+                  AS Variable [ Name=$l ]
                 ]
                 Where
                   OperatorExpr [
@@ -316,8 +308,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$l1 ]
+              AS Variable [ Name=$l1 ]
             ]
             Where
               OperatorExpr [
@@ -346,8 +337,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$l2 ]
+          AS Variable [ Name=$l2 ]
         ]
         Where
           OperatorExpr [
@@ -372,8 +362,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l3 ]
+      AS Variable [ Name=$l3 ]
     ]
     Let Variable [ Name=$amount ]
       :=
@@ -427,8 +416,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$profit ]
+  AS Variable [ Name=$profit ]
 ]
 Groupby
   Variable [ Name=$nation ]
@@ -443,11 +431,9 @@
     Variable [ Name=$profit ]
     Field=o_year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$profit ]
-   AS profit
+    profit:=Variable [ Name=$profit ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785-2/query-issue785-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785-2/query-issue785-2.3.ast
index 3b22218..97006bf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785-2/query-issue785-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785-2/query-issue785-2.3.ast
@@ -26,14 +26,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$nation ]
+      AS Variable [ Name=$nation ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [SelectedNation]
       ]
-      AS
-      Variable [ Name=$sn ]
+      AS Variable [ Name=$sn ]
     ]
     Where
       OperatorExpr [
@@ -71,20 +69,17 @@
     ]
     ]
     FROM [      Variable [ Name=$t ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customer]
       ]
-      AS
-      Variable [ Name=$customer ]
+      AS Variable [ Name=$customer ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$orders ]
+      AS Variable [ Name=$orders ]
     ]
     Where
       OperatorExpr [
@@ -125,17 +120,12 @@
         Variable [ Name=$n ]
         Field=n_nationkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$orders ]
-       AS orders
-      Variable [ Name=$customer ]
-       AS customer
-      Variable [ Name=$n ]
-       AS n
-      Variable [ Name=$t ]
-       AS t
+        orders:=Variable [ Name=$orders ]
+        customer:=Variable [ Name=$customer ]
+        n:=Variable [ Name=$n ]
+        t:=Variable [ Name=$t ]
       )
 
     Let Variable [ Name=$sum ]
@@ -149,8 +139,7 @@
           ]
           ]
           FROM [            Variable [ Name=$orders ]
-            AS
-            Variable [ Name=$o ]
+            AS Variable [ Name=$o ]
           ]
         )
       ]
@@ -187,8 +176,7 @@
       ]
       ]
       FROM [        Variable [ Name=$x ]
-        AS
-        Variable [ Name=$y ]
+        AS Variable [ Name=$y ]
       ]
       Orderby
         FieldAccessor [
@@ -204,8 +192,7 @@
 ]
 ]
 FROM [  Variable [ Name=$X ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Groupby
   Variable [ Name=$nation_key ]
@@ -214,14 +201,10 @@
     Variable [ Name=$x ]
     Field=nation_key
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$x ]
-   AS x
-  Variable [ Name=$X ]
-   AS X
-  Variable [ Name=$t ]
-   AS t
+    x:=Variable [ Name=$x ]
+    X:=Variable [ Name=$X ]
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785/query-issue785.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785/query-issue785.3.ast
index e59376e..602feb1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785/query-issue785.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue785/query-issue785.3.ast
@@ -26,8 +26,7 @@
       ]
       ]
       FROM [        Variable [ Name=$x ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
       Groupby
         Variable [ Name=$od ]
@@ -36,17 +35,12 @@
           Variable [ Name=$i ]
           Field=order_date
         ]
-        GROUP AS
-        Variable [ Name=#3 ]
+        GROUP AS Variable [ Name=#3 ]
         (
-        Variable [ Name=$i ]
-         AS i
-        Variable [ Name=$x ]
-         AS x
-        Variable [ Name=$nation_key ]
-         AS nation_key
-        Variable [ Name=#2 ]
-         AS #2
+          i:=Variable [ Name=$i ]
+          x:=Variable [ Name=$x ]
+          nation_key:=Variable [ Name=$nation_key ]
+          #2:=Variable [ Name=#2 ]
         )
 
       Let Variable [ Name=$sum ]
@@ -60,8 +54,7 @@
             ]
             ]
             FROM [              Variable [ Name=$i ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
             ]
           )
         ]
@@ -100,8 +93,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -111,20 +103,17 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customer]
       ]
-      AS
-      Variable [ Name=$customer ]
+      AS Variable [ Name=$customer ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$orders ]
+      AS Variable [ Name=$orders ]
     ]
     Where
       OperatorExpr [
@@ -165,20 +154,15 @@
         Variable [ Name=$n ]
         Field=n_nationkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$orders ]
-       AS orders
-      Variable [ Name=$customer ]
-       AS customer
-      Variable [ Name=$n ]
-       AS n
+        orders:=Variable [ Name=$orders ]
+        customer:=Variable [ Name=$customer ]
+        n:=Variable [ Name=$n ]
       )
 
   )
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Groupby
   Variable [ Name=$nation_key ]
@@ -187,10 +171,8 @@
     Variable [ Name=$x ]
     Field=nation_key
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$x ]
-   AS x
+    x:=Variable [ Name=$x ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue786/query-issue786.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue786/query-issue786.3.ast
index 4cd1b1f..2c51fb4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue786/query-issue786.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch-sql-like/query-issue786/query-issue786.3.ast
@@ -39,14 +39,12 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Orders]
         ]
-        AS
-        Variable [ Name=$orders ]
+        AS Variable [ Name=$orders ]
 ,
         FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$customer ]
+        AS Variable [ Name=$customer ]
       ]
       Where
         OperatorExpr [
@@ -81,17 +79,12 @@
           Variable [ Name=$orders ]
           Field=o_orderdate
         ]
-        GROUP AS
-        Variable [ Name=#1 ]
+        GROUP AS Variable [ Name=#1 ]
         (
-        Variable [ Name=$customer ]
-         AS customer
-        Variable [ Name=$orders ]
-         AS orders
-        Variable [ Name=$sn ]
-         AS sn
-        Variable [ Name=$nation ]
-         AS nation
+          customer:=Variable [ Name=$customer ]
+          orders:=Variable [ Name=$orders ]
+          sn:=Variable [ Name=$sn ]
+          nation:=Variable [ Name=$nation ]
         )
 
       Let Variable [ Name=$sum ]
@@ -105,8 +98,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -123,14 +115,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Nation]
   ]
-  AS
-  Variable [ Name=$nation ]
+  AS Variable [ Name=$nation ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [SelectedNation]
   ]
-  AS
-  Variable [ Name=$sn ]
+  AS Variable [ Name=$sn ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/distinct_by/distinct_by.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/distinct_by/distinct_by.3.ast
index 1ffbc72..59ff8c8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/distinct_by/distinct_by.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/distinct_by/distinct_by.3.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/group_no_agg/group_no_agg.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/group_no_agg/group_no_agg.3.ast
index 5a2efb6..40dfc87 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/group_no_agg/group_no_agg.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/group_no_agg/group_no_agg.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Regions_group_no_agg]
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Groupby
   Variable [ Name=$name ]
@@ -16,11 +15,9 @@
     Variable [ Name=$r ]
     Field=r_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$r ]
-   AS r
+    r:=Variable [ Name=$r ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/nest_aggregate/nest_aggregate.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/nest_aggregate/nest_aggregate.3.ast
index 12d0a2e..2c323ea 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/nest_aggregate/nest_aggregate.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/nest_aggregate/nest_aggregate.3.ast
@@ -39,14 +39,12 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Orders]
         ]
-        AS
-        Variable [ Name=$orders ]
+        AS Variable [ Name=$orders ]
 ,
         FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$customer ]
+        AS Variable [ Name=$customer ]
       ]
       Where
         OperatorExpr [
@@ -81,17 +79,12 @@
           Variable [ Name=$orders ]
           Field=o_orderdate
         ]
-        GROUP AS
-        Variable [ Name=#1 ]
+        GROUP AS Variable [ Name=#1 ]
         (
-        Variable [ Name=$customer ]
-         AS customer
-        Variable [ Name=$orders ]
-         AS orders
-        Variable [ Name=$sn ]
-         AS sn
-        Variable [ Name=$nation ]
-         AS nation
+          customer:=Variable [ Name=$customer ]
+          orders:=Variable [ Name=$orders ]
+          sn:=Variable [ Name=$sn ]
+          nation:=Variable [ Name=$nation ]
         )
 
       Let Variable [ Name=$sum ]
@@ -105,8 +98,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -123,14 +115,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Nation]
   ]
-  AS
-  Variable [ Name=$nation ]
+  AS Variable [ Name=$nation ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [SelectedNation]
   ]
-  AS
-  Variable [ Name=$sn ]
+  AS Variable [ Name=$sn ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
index cafd221..ae8f04d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q01_pricing_summary_report_nt/q01_pricing_summary_report_nt.3.ast
@@ -25,8 +25,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -43,8 +42,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -72,8 +70,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -110,8 +107,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -128,8 +124,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -146,8 +141,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -164,8 +158,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -182,8 +175,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -193,8 +185,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -218,11 +209,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
index bcdbaa0..0fa04eb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q02_minimum_cost_supplier/q02_minimum_cost_supplier.3.ast
@@ -78,8 +78,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Part ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
 ,
       (
         SELECT ELEMENT [
@@ -151,8 +150,7 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -216,8 +214,7 @@
             ]
             ]
             FROM [              Variable [ Name=$Supplier ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -241,12 +238,10 @@
                 ]
                 ]
                 FROM [                  Variable [ Name=$Region ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
 ,
                   Variable [ Name=$Nation ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
                 ]
                 Where
                   OperatorExpr [
@@ -272,8 +267,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$rn ]
+              AS Variable [ Name=$rn ]
             ]
             Where
               OperatorExpr [
@@ -288,8 +282,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$srn ]
+          AS Variable [ Name=$srn ]
         ]
         Where
           OperatorExpr [
@@ -304,8 +297,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pssrn ]
+      AS Variable [ Name=$pssrn ]
     ]
     Where
       OperatorExpr [
@@ -353,8 +345,7 @@
             ]
             ]
             FROM [              Variable [ Name=$pssrn ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -362,8 +353,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Part ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
 ,
       (
         SELECT ELEMENT [
@@ -435,8 +425,7 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -500,8 +489,7 @@
             ]
             ]
             FROM [              Variable [ Name=$Supplier ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -525,12 +513,10 @@
                 ]
                 ]
                 FROM [                  Variable [ Name=$Region ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
 ,
                   Variable [ Name=$Nation ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
                 ]
                 Where
                   OperatorExpr [
@@ -556,8 +542,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$rn ]
+              AS Variable [ Name=$rn ]
             ]
             Where
               OperatorExpr [
@@ -572,8 +557,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$srn ]
+          AS Variable [ Name=$srn ]
         ]
         Where
           OperatorExpr [
@@ -588,8 +572,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pssrn ]
+      AS Variable [ Name=$pssrn ]
     ]
     Where
       OperatorExpr [
@@ -695,13 +678,11 @@
 ]
 FROM [  FunctionCall tpch.tmp2@0[
   ]
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ,
   FunctionCall tpch.tmp1@0[
   ]
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
index 5bb4ef8..4b04e3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q03_shipping_priority_nt/q03_shipping_priority_nt.3.ast
@@ -27,20 +27,17 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -118,15 +115,11 @@
     Variable [ Name=$o ]
     Field=o_shippriority
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -151,8 +144,7 @@
       ]
       ]
       FROM [        Variable [ Name=$l ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q04_order_priority/q04_order_priority.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q04_order_priority/q04_order_priority.3.ast
index b9aa68f..9c0d26d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q04_order_priority/q04_order_priority.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q04_order_priority/q04_order_priority.3.ast
@@ -14,8 +14,7 @@
     ]
     ]
     FROM [      Variable [ Name=$LineItem ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
@@ -52,8 +51,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -63,13 +61,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
   INNER JOIN
     FunctionCall tpch.tmp@0[
     ]
-    AS
-    Variable [ Name=$t ]
+    AS Variable [ Name=$t ]
     ON
     OperatorExpr [
       FieldAccessor [
@@ -110,13 +106,10 @@
     Variable [ Name=$o ]
     Field=o_orderpriority
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$o ]
-   AS o
+    t:=Variable [ Name=$t ]
+    o:=Variable [ Name=$o ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q05_local_supplier_volume/q05_local_supplier_volume.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
index 92d992a..fefccd1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q05_local_supplier_volume/q05_local_supplier_volume.3.ast
@@ -17,8 +17,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   (
     SELECT ELEMENT [
@@ -68,8 +67,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -119,8 +117,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -154,8 +151,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Supplier]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
 ,
               (
                 SELECT ELEMENT [
@@ -181,14 +177,12 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Nation]
                   ]
-                  AS
-                  Variable [ Name=$n ]
+                  AS Variable [ Name=$n ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Region]
                   ]
-                  AS
-                  Variable [ Name=$r ]
+                  AS Variable [ Name=$r ]
                 ]
                 Where
                   OperatorExpr [
@@ -203,8 +197,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$n1 ]
+              AS Variable [ Name=$n1 ]
             ]
             Where
               OperatorExpr [
@@ -219,8 +212,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$s1 ]
+          AS Variable [ Name=$s1 ]
         ]
         Where
           OperatorExpr [
@@ -235,8 +227,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l1 ]
+      AS Variable [ Name=$l1 ]
     ]
     Where
       OperatorExpr [
@@ -271,8 +262,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$o1 ]
+  AS Variable [ Name=$o1 ]
 ]
 Where
   OperatorExpr [
@@ -307,13 +297,10 @@
     Variable [ Name=$o1 ]
     Field=n_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o1 ]
-   AS o1
-  Variable [ Name=$c ]
-   AS c
+    o1:=Variable [ Name=$o1 ]
+    c:=Variable [ Name=$c ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -338,8 +325,7 @@
       ]
       ]
       FROM [        Variable [ Name=$o1 ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
index 592238f..63304d9 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.3.ast
@@ -22,8 +22,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Where
           OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.4.ast
index 420bd44..653e7eb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q06_forecast_revenue_change/q06_forecast_revenue_change.4.ast
@@ -10,8 +10,7 @@
     ]
     ]
     FROM [      Variable [ Name=#1 ]
-      AS
-      Variable [ Name=#2 ]
+      AS Variable [ Name=#2 ]
     ]
   )
 ]
@@ -20,8 +19,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q07_volume_shipping/q07_volume_shipping.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q07_volume_shipping/q07_volume_shipping.3.ast
index ac8fbda..f7aeb0f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q07_volume_shipping/q07_volume_shipping.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q07_volume_shipping/q07_volume_shipping.3.ast
@@ -38,12 +38,10 @@
     ]
     ]
     FROM [      Variable [ Name=$Nation ]
-      AS
-      Variable [ Name=$n1 ]
+      AS Variable [ Name=$n1 ]
 ,
       Variable [ Name=$Nation ]
-      AS
-      Variable [ Name=$n2 ]
+      AS Variable [ Name=$n2 ]
     ]
     Where
       OperatorExpr [
@@ -231,14 +229,12 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [LineItem]
               ]
-              AS
-              Variable [ Name=$l ]
+              AS Variable [ Name=$l ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Orders]
               ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
             Where
               OperatorExpr [
@@ -273,14 +269,12 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$lo ]
+          AS Variable [ Name=$lo ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
         ]
         Where
           OperatorExpr [
@@ -295,14 +289,12 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$loc ]
+      AS Variable [ Name=$loc ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Supplier]
       ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -317,13 +309,11 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locs ]
+  AS Variable [ Name=$locs ]
 ,
   FunctionCall tpch.q7_volume_shipping_tmp@0[
   ]
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Let Variable [ Name=$l_year0 ]
   :=
@@ -375,15 +365,11 @@
   Variable [ Name=$l_year ]
   :=
   Variable [ Name=$l_year0 ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l_year0 ]
-   AS l_year0
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$locs ]
-   AS locs
+    l_year0:=Variable [ Name=$l_year0 ]
+    t:=Variable [ Name=$t ]
+    locs:=Variable [ Name=$locs ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -408,8 +394,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locs ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q08_national_market_share/q08_national_market_share.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q08_national_market_share/q08_national_market_share.3.ast
index eca3549..279175b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q08_national_market_share/q08_national_market_share.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q08_national_market_share/q08_national_market_share.3.ast
@@ -33,8 +33,7 @@
           ]
           ]
           FROM [            Variable [ Name=$t ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -48,8 +47,7 @@
           ]
           ]
           FROM [            Variable [ Name=$t ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -142,8 +140,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Supplier]
           ]
-          AS
-          Variable [ Name=$s ]
+          AS Variable [ Name=$s ]
 ,
           (
             SELECT ELEMENT [
@@ -230,8 +227,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [LineItem]
                   ]
-                  AS
-                  Variable [ Name=$l ]
+                  AS Variable [ Name=$l ]
 ,
                   (
                     SELECT ELEMENT [
@@ -257,8 +253,7 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Orders]
                       ]
-                      AS
-                      Variable [ Name=$o ]
+                      AS Variable [ Name=$o ]
 ,
                       (
                         SELECT ELEMENT [
@@ -276,8 +271,7 @@
                         FROM [                          FunctionCall Metadata.dataset@1[
                             LiteralExpr [STRING] [Customer]
                           ]
-                          AS
-                          Variable [ Name=$c ]
+                          AS Variable [ Name=$c ]
 ,
                           (
                             SELECT ELEMENT [
@@ -295,14 +289,12 @@
                             FROM [                              FunctionCall Metadata.dataset@1[
                                 LiteralExpr [STRING] [Nation]
                               ]
-                              AS
-                              Variable [ Name=$n1 ]
+                              AS Variable [ Name=$n1 ]
 ,
                               FunctionCall Metadata.dataset@1[
                                 LiteralExpr [STRING] [Region]
                               ]
-                              AS
-                              Variable [ Name=$r1 ]
+                              AS Variable [ Name=$r1 ]
                             ]
                             Where
                               OperatorExpr [
@@ -328,8 +320,7 @@
                                 ]
                               ]
                           )
-                          AS
-                          Variable [ Name=$nr ]
+                          AS Variable [ Name=$nr ]
                         ]
                         Where
                           OperatorExpr [
@@ -344,8 +335,7 @@
                             ]
                           ]
                       )
-                      AS
-                      Variable [ Name=$nrc ]
+                      AS Variable [ Name=$nrc ]
                     ]
                     Where
                       OperatorExpr [
@@ -360,8 +350,7 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$nrco ]
+                  AS Variable [ Name=$nrco ]
                 ]
                 Where
                   OperatorExpr [
@@ -396,14 +385,12 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$lnrco ]
+              AS Variable [ Name=$lnrco ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Part]
               ]
-              AS
-              Variable [ Name=$p ]
+              AS Variable [ Name=$p ]
             ]
             Where
               OperatorExpr [
@@ -429,8 +416,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$lnrcop ]
+          AS Variable [ Name=$lnrcop ]
         ]
         Where
           OperatorExpr [
@@ -445,14 +431,12 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$slnrcop ]
+      AS Variable [ Name=$slnrcop ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n2 ]
+      AS Variable [ Name=$n2 ]
     ]
     Let Variable [ Name=$o_year ]
       :=
@@ -475,8 +459,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ]
 Groupby
   Variable [ Name=$year ]
@@ -485,11 +468,9 @@
     Variable [ Name=$t ]
     Field=year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t ]
-   AS t
+    t:=Variable [ Name=$t ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
index f0b946e..3ee115a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q09_product_type_profit_nt/q09_product_type_profit_nt.3.ast
@@ -24,8 +24,7 @@
         ]
         ]
         FROM [          Variable [ Name=$profit ]
-          AS
-          Variable [ Name=$pr ]
+          AS Variable [ Name=$pr ]
         ]
       )
     ]
@@ -58,8 +57,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -117,8 +115,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Part]
           ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
           INNER JOIN
             (
               SELECT ELEMENT [
@@ -184,8 +181,7 @@
               FROM [                FunctionCall Metadata.dataset@1[
                   LiteralExpr [STRING] [Partsupp]
                 ]
-                AS
-                Variable [ Name=$ps ]
+                AS Variable [ Name=$ps ]
                 INNER JOIN
                   (
                     SELECT ELEMENT [
@@ -272,14 +268,12 @@
                         FROM [                          FunctionCall Metadata.dataset@1[
                             LiteralExpr [STRING] [Supplier]
                           ]
-                          AS
-                          Variable [ Name=$s ]
+                          AS Variable [ Name=$s ]
 ,
                           FunctionCall Metadata.dataset@1[
                             LiteralExpr [STRING] [Nation]
                           ]
-                          AS
-                          Variable [ Name=$n ]
+                          AS Variable [ Name=$n ]
                         ]
                         Where
                           OperatorExpr [
@@ -294,14 +288,12 @@
                             ]
                           ]
                       )
-                      AS
-                      Variable [ Name=$s1 ]
+                      AS Variable [ Name=$s1 ]
                       INNER JOIN
                         FunctionCall Metadata.dataset@1[
                           LiteralExpr [STRING] [LineItem]
                         ]
-                        AS
-                        Variable [ Name=$l ]
+                        AS Variable [ Name=$l ]
                         ON
                         OperatorExpr [
                           FieldAccessor [
@@ -316,8 +308,7 @@
                         ]
                     ]
                   )
-                  AS
-                  Variable [ Name=$l1 ]
+                  AS Variable [ Name=$l1 ]
                   ON
                   OperatorExpr [
                     OperatorExpr [
@@ -346,8 +337,7 @@
                   ]
               ]
             )
-            AS
-            Variable [ Name=$l2 ]
+            AS Variable [ Name=$l2 ]
             ON
             OperatorExpr [
               FunctionCall tpch.contains@2[
@@ -372,8 +362,7 @@
             ]
         ]
       )
-      AS
-      Variable [ Name=$l3 ]
+      AS Variable [ Name=$l3 ]
     ]
     Let Variable [ Name=$amount ]
       :=
@@ -427,8 +416,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$profit ]
+  AS Variable [ Name=$profit ]
 ]
 Groupby
   Variable [ Name=$nation ]
@@ -443,11 +431,9 @@
     Variable [ Name=$profit ]
     Field=o_year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$profit ]
-   AS profit
+    profit:=Variable [ Name=$profit ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item/q10_returned_item.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item/q10_returned_item.3.ast
index 794ca6a..d755261 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item/q10_returned_item.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item/q10_returned_item.3.ast
@@ -124,8 +124,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       (
         SELECT ELEMENT [
@@ -199,20 +198,17 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -261,8 +257,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$ocn ]
+      AS Variable [ Name=$ocn ]
     ]
     Where
       OperatorExpr [
@@ -288,8 +283,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locn ]
+  AS Variable [ Name=$locn ]
 ]
 Groupby
   Variable [ Name=$c_custkey ]
@@ -334,11 +328,9 @@
     Variable [ Name=$locn ]
     Field=c_comment
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$locn ]
-   AS locn
+    locn:=Variable [ Name=$locn ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -363,8 +355,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locn ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item_int64/q10_returned_item_int64.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item_int64/q10_returned_item_int64.3.ast
index 794ca6a..d755261 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item_int64/q10_returned_item_int64.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q10_returned_item_int64/q10_returned_item_int64.3.ast
@@ -124,8 +124,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       (
         SELECT ELEMENT [
@@ -199,20 +198,17 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -261,8 +257,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$ocn ]
+      AS Variable [ Name=$ocn ]
     ]
     Where
       OperatorExpr [
@@ -288,8 +283,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$locn ]
+  AS Variable [ Name=$locn ]
 ]
 Groupby
   Variable [ Name=$c_custkey ]
@@ -334,11 +328,9 @@
     Variable [ Name=$locn ]
     Field=c_comment
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$locn ]
-   AS locn
+    locn:=Variable [ Name=$locn ]
   )
 
 Let Variable [ Name=$revenue ]
@@ -363,8 +355,7 @@
       ]
       ]
       FROM [        Variable [ Name=$locn ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q11_important_stock/q11_important_stock.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q11_important_stock/q11_important_stock.3.ast
index a3e3830..14caa44 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q11_important_stock/q11_important_stock.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q11_important_stock/q11_important_stock.3.ast
@@ -20,8 +20,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Partsupp]
         ]
-        AS
-        Variable [ Name=$ps ]
+        AS Variable [ Name=$ps ]
 ,
         (
           SELECT ELEMENT [
@@ -39,14 +38,12 @@
           FROM [            FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [Supplier]
             ]
-            AS
-            Variable [ Name=$s ]
+            AS Variable [ Name=$s ]
 ,
             FunctionCall Metadata.dataset@1[
               LiteralExpr [STRING] [Nation]
             ]
-            AS
-            Variable [ Name=$n ]
+            AS Variable [ Name=$n ]
           ]
           Where
             OperatorExpr [
@@ -61,8 +58,7 @@
               ]
             ]
         )
-        AS
-        Variable [ Name=$sn ]
+        AS Variable [ Name=$sn ]
       ]
       Where
         OperatorExpr [
@@ -125,8 +121,7 @@
             ]
             ]
             FROM [              Variable [ Name=$ps ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -136,8 +131,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Partsupp]
       ]
-      AS
-      Variable [ Name=$ps ]
+      AS Variable [ Name=$ps ]
 ,
       (
         SELECT ELEMENT [
@@ -155,14 +149,12 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Supplier]
           ]
-          AS
-          Variable [ Name=$s ]
+          AS Variable [ Name=$s ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Nation]
           ]
-          AS
-          Variable [ Name=$n ]
+          AS Variable [ Name=$n ]
         ]
         Where
           OperatorExpr [
@@ -177,8 +169,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$sn ]
+      AS Variable [ Name=$sn ]
     ]
     Where
       OperatorExpr [
@@ -199,20 +190,15 @@
         Variable [ Name=$ps ]
         Field=ps_partkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$sn ]
-       AS sn
-      Variable [ Name=$ps ]
-       AS ps
-      Variable [ Name=$sum ]
-       AS sum
+        sn:=Variable [ Name=$sn ]
+        ps:=Variable [ Name=$ps ]
+        sum:=Variable [ Name=$sum ]
       )
 
   )
-  AS
-  Variable [ Name=$t1 ]
+  AS Variable [ Name=$t1 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q12_shipping/q12_shipping.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q12_shipping/q12_shipping.3.ast
index 6150bd4..b1fee8a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q12_shipping/q12_shipping.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q12_shipping/q12_shipping.3.ast
@@ -40,8 +40,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -79,8 +78,7 @@
         ]
         ]
         FROM [          Variable [ Name=$o ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -90,14 +88,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ]
 Where
   OperatorExpr [
@@ -182,13 +178,10 @@
     Variable [ Name=$l ]
     Field=l_shipmode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$l ]
-   AS l
+    o:=Variable [ Name=$o ]
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q13_customer_distribution/q13_customer_distribution.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q13_customer_distribution/q13_customer_distribution.3.ast
index 040038c..648a33b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q13_customer_distribution/q13_customer_distribution.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q13_customer_distribution/q13_customer_distribution.3.ast
@@ -35,8 +35,7 @@
             ]
             ]
             FROM [              Variable [ Name=$co ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -68,8 +67,7 @@
                 FROM [                  FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [Orders]
                   ]
-                  AS
-                  Variable [ Name=$o ]
+                  AS Variable [ Name=$o ]
                 ]
                 Where
                   OperatorExpr [
@@ -103,12 +101,10 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Customer]
           ]
-          AS
-          Variable [ Name=$c ]
+          AS Variable [ Name=$c ]
         ]
       )
-      AS
-      Variable [ Name=$co ]
+      AS Variable [ Name=$co ]
     ]
     Groupby
       Variable [ Name=$c_custkey ]
@@ -117,16 +113,13 @@
         Variable [ Name=$co ]
         Field=c_custkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$co ]
-       AS co
+        co:=Variable [ Name=$co ]
       )
 
   )
-  AS
-  Variable [ Name=$gco ]
+  AS Variable [ Name=$gco ]
 ]
 Groupby
   Variable [ Name=$c_count ]
@@ -135,11 +128,9 @@
     Variable [ Name=$gco ]
     Field=c_count
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$gco ]
-   AS gco
+    gco:=Variable [ Name=$gco ]
   )
 
 Let Variable [ Name=$custdist ]
@@ -153,8 +144,7 @@
       ]
       ]
       FROM [        Variable [ Name=#2 ]
-        AS
-        Variable [ Name=#3 ]
+        AS Variable [ Name=#3 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q14_promotion_effect/q14_promotion_effect.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q14_promotion_effect/q14_promotion_effect.3.ast
index 86eb727..1f8c630 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q14_promotion_effect/q14_promotion_effect.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q14_promotion_effect/q14_promotion_effect.3.ast
@@ -36,8 +36,7 @@
       ]
       ]
       FROM [        Variable [ Name=$lp ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
@@ -62,8 +61,7 @@
       ]
       ]
       FROM [        Variable [ Name=$lp ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
@@ -72,14 +70,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Part]
   ]
-  AS
-  Variable [ Name=$p ]
+  AS Variable [ Name=$p ]
 ]
 Let Variable [ Name=$lp ]
   :=
@@ -145,14 +141,10 @@
   Variable [ Name=$t ]
   :=
   LiteralExpr [LONG] [1]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$lp ]
-   AS lp
-  Variable [ Name=$p ]
-   AS p
-  Variable [ Name=$l ]
-   AS l
+    lp:=Variable [ Name=$lp ]
+    p:=Variable [ Name=$p ]
+    l:=Variable [ Name=$l ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q15_top_supplier/q15_top_supplier.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q15_top_supplier/q15_top_supplier.3.ast
index 8e0bd84..0645c36 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q15_top_supplier/q15_top_supplier.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q15_top_supplier/q15_top_supplier.3.ast
@@ -31,8 +31,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -40,8 +39,7 @@
     ]
     ]
     FROM [      Variable [ Name=$LineItem ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Where
       OperatorExpr [
@@ -87,8 +85,7 @@
       ]
       FROM [        FunctionCall tpch.revenue@0[
         ]
-        AS
-        Variable [ Name=$r2 ]
+        AS Variable [ Name=$r2 ]
       ]
     )
   ]
@@ -139,13 +136,11 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Supplier]
   ]
-  AS
-  Variable [ Name=$s ]
+  AS Variable [ Name=$s ]
 ,
   FunctionCall tpch.revenue@0[
   ]
-  AS
-  Variable [ Name=$r ]
+  AS Variable [ Name=$r ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
index 9fb5785..44b1f8d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q16_parts_supplier_relationship/q16_parts_supplier_relationship.3.ast
@@ -75,12 +75,10 @@
         ]
         ]
         FROM [          Variable [ Name=$Partsupp ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           Variable [ Name=$Part ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
         ]
         Where
           OperatorExpr [
@@ -116,12 +114,10 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$psp ]
+      AS Variable [ Name=$psp ]
 ,
       Variable [ Name=$Supplier ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -202,8 +198,7 @@
     ]
     FROM [      FunctionCall tpch.tmp@0[
       ]
-      AS
-      Variable [ Name=$t ]
+      AS Variable [ Name=$t ]
     ]
     Where
       OperatorExpr [
@@ -304,16 +299,13 @@
         Variable [ Name=$t ]
         Field=ps_suppkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$t ]
-       AS t
+        t:=Variable [ Name=$t ]
       )
 
   )
-  AS
-  Variable [ Name=$t2 ]
+  AS Variable [ Name=$t2 ]
 ]
 Groupby
   Variable [ Name=$p_brand ]
@@ -334,11 +326,9 @@
     Variable [ Name=$t2 ]
     Field=p_size
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$t2 ]
-   AS t2
+    t2:=Variable [ Name=$t2 ]
   )
 
 Let Variable [ Name=$supplier_cnt ]
@@ -352,8 +342,7 @@
       ]
       ]
       FROM [        Variable [ Name=$t2 ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q17_large_gby_variant/q17_large_gby_variant.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q17_large_gby_variant/q17_large_gby_variant.3.ast
index fb8f2cd..4c84266 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q17_large_gby_variant/q17_large_gby_variant.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q17_large_gby_variant/q17_large_gby_variant.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -40,8 +39,7 @@
           ]
           ]
           FROM [            Variable [ Name=$l ]
-            AS
-            Variable [ Name=$i ]
+            AS Variable [ Name=$i ]
           ]
         )
       ]
@@ -59,8 +57,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -77,8 +74,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -95,8 +91,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -113,8 +108,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -131,8 +125,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -149,8 +142,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -167,8 +159,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -185,8 +176,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -203,8 +193,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -214,8 +203,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Groupby
   Variable [ Name=$l_partkey ]
@@ -224,11 +212,9 @@
     Variable [ Name=$l ]
     Field=l_partkey
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q18_large_volume_customer/q18_large_volume_customer.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q18_large_volume_customer/q18_large_volume_customer.3.ast
index ea93017..d220f48 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q18_large_volume_customer/q18_large_volume_customer.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q18_large_volume_customer/q18_large_volume_customer.3.ast
@@ -39,8 +39,7 @@
         ]
         ]
         FROM [          Variable [ Name=$l ]
-          AS
-          Variable [ Name=$j ]
+          AS Variable [ Name=$j ]
         ]
       )
     ]
@@ -50,14 +49,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Customer]
   ]
-  AS
-  Variable [ Name=$c ]
+  AS Variable [ Name=$c ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Orders]
   ]
-  AS
-  Variable [ Name=$o ]
+  AS Variable [ Name=$o ]
 ,
   (
     SELECT ELEMENT [
@@ -79,8 +76,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -90,8 +86,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -100,26 +95,20 @@
         Variable [ Name=$l ]
         Field=l_orderkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$l ]
-       AS l
-      Variable [ Name=$o ]
-       AS o
-      Variable [ Name=$c ]
-       AS c
+        l:=Variable [ Name=$l ]
+        o:=Variable [ Name=$o ]
+        c:=Variable [ Name=$c ]
       )
 
   )
-  AS
-  Variable [ Name=$t ]
+  AS Variable [ Name=$t ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -199,17 +188,12 @@
     Variable [ Name=$o ]
     Field=o_totalprice
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$l ]
-   AS l
-  Variable [ Name=$t ]
-   AS t
-  Variable [ Name=$o ]
-   AS o
-  Variable [ Name=$c ]
-   AS c
+    l:=Variable [ Name=$l ]
+    t:=Variable [ Name=$t ]
+    o:=Variable [ Name=$o ]
+    c:=Variable [ Name=$c ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q19_discounted_revenue/q19_discounted_revenue.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q19_discounted_revenue/q19_discounted_revenue.3.ast
index 1de3822..156754d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q19_discounted_revenue/q19_discounted_revenue.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q19_discounted_revenue/q19_discounted_revenue.3.ast
@@ -24,14 +24,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [LineItem]
       ]
-      AS
-      Variable [ Name=$l ]
+      AS Variable [ Name=$l ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Part]
       ]
-      AS
-      Variable [ Name=$p ]
+      AS Variable [ Name=$p ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q20_potential_part_promotion/q20_potential_part_promotion.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
index 6029e08..9993401 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q20_potential_part_promotion/q20_potential_part_promotion.3.ast
@@ -61,8 +61,7 @@
                   ]
                   ]
                   FROM [                    Variable [ Name=$l ]
-                    AS
-                    Variable [ Name=$i ]
+                    AS Variable [ Name=$i ]
                   ]
                 )
               ]
@@ -73,8 +72,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Groupby
           Variable [ Name=$l_partkey ]
@@ -89,16 +87,13 @@
             Variable [ Name=$l ]
             Field=l_suppkey
           ]
-          GROUP AS
-          Variable [ Name=#1 ]
+          GROUP AS Variable [ Name=#1 ]
           (
-          Variable [ Name=$l ]
-           AS l
+            l:=Variable [ Name=$l ]
           )
 
       )
-      AS
-      Variable [ Name=$t2 ]
+      AS Variable [ Name=$t2 ]
 ,
       (
         SELECT ELEMENT [
@@ -132,8 +127,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Partsupp]
           ]
-          AS
-          Variable [ Name=$ps ]
+          AS Variable [ Name=$ps ]
 ,
           (
             SELECT ELEMENT [
@@ -151,12 +145,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Part]
               ]
-              AS
-              Variable [ Name=$p ]
+              AS Variable [ Name=$p ]
             ]
           )
-          AS
-          Variable [ Name=$t1 ]
+          AS Variable [ Name=$t1 ]
         ]
         Where
           OperatorExpr [
@@ -171,8 +163,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$pst1 ]
+      AS Variable [ Name=$pst1 ]
     ]
     Where
       OperatorExpr [
@@ -213,8 +204,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t3 ]
+  AS Variable [ Name=$t3 ]
 ,
   (
     SELECT ELEMENT [
@@ -248,14 +238,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Supplier]
       ]
-      AS
-      Variable [ Name=$s ]
+      AS Variable [ Name=$s ]
     ]
     Where
       OperatorExpr [
@@ -270,8 +258,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t4 ]
+  AS Variable [ Name=$t4 ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
index 1d055ab..8da949a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q21_suppliers_who_kept_orders_waiting/q21_suppliers_who_kept_orders_waiting.3.ast
@@ -20,8 +20,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -38,8 +37,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -62,8 +60,7 @@
         ]
         ]
         FROM [          Variable [ Name=$LineItem ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Groupby
           Variable [ Name=$l_orderkey1 ]
@@ -80,8 +77,7 @@
           ]
 
       )
-      AS
-      Variable [ Name=$l2 ]
+      AS Variable [ Name=$l2 ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -115,8 +111,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -133,8 +128,7 @@
             ]
             ]
             FROM [              Variable [ Name=$l2 ]
-              AS
-              Variable [ Name=$i ]
+              AS Variable [ Name=$i ]
             ]
           )
         ]
@@ -157,8 +151,7 @@
         ]
         ]
         FROM [          Variable [ Name=$LineItem ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
         Where
           OperatorExpr [
@@ -187,8 +180,7 @@
           ]
 
       )
-      AS
-      Variable [ Name=$l2 ]
+      AS Variable [ Name=$l2 ]
     ]
     Groupby
       Variable [ Name=$l_orderkey ]
@@ -293,8 +285,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
 ,
           (
             SELECT ELEMENT [
@@ -320,14 +311,12 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Nation]
               ]
-              AS
-              Variable [ Name=$n ]
+              AS Variable [ Name=$n ]
 ,
               FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Supplier]
               ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
             ]
             Where
               OperatorExpr [
@@ -342,19 +331,16 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$ns ]
+          AS Variable [ Name=$ns ]
 ,
           FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
 ,
           FunctionCall tpch.tmp1@0[
           ]
-          AS
-          Variable [ Name=$t1 ]
+          AS Variable [ Name=$t1 ]
         ]
         Where
           OperatorExpr [
@@ -407,13 +393,11 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$t3 ]
+      AS Variable [ Name=$t3 ]
 ,
       FunctionCall tpch.tmp2@0[
       ]
-      AS
-      Variable [ Name=$t2 ]
+      AS Variable [ Name=$t2 ]
     ]
     Where
       OperatorExpr [
@@ -439,8 +423,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$t4 ]
+  AS Variable [ Name=$t4 ]
 ]
 Groupby
   Variable [ Name=$s_name ]
@@ -449,11 +432,9 @@
     Variable [ Name=$t4 ]
     Field=s_name
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$t4 ]
-   AS t4
+    t4:=Variable [ Name=$t4 ]
   )
 
 Let Variable [ Name=$numwait ]
@@ -467,8 +448,7 @@
       ]
       ]
       FROM [        Variable [ Name=#1 ]
-        AS
-        Variable [ Name=#2 ]
+        AS Variable [ Name=#2 ]
       ]
     )
   ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
index 063914d..5032a49 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/q22_global_sales_opportunity/q22_global_sales_opportunity.3.ast
@@ -34,8 +34,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Customer ]
-      AS
-      Variable [ Name=$c ]
+      AS Variable [ Name=$c ]
     ]
   )
 }
@@ -54,8 +53,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$c ]
+        AS Variable [ Name=$c ]
       ]
       Where
         OperatorExpr [
@@ -87,8 +85,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -105,8 +102,7 @@
         ]
         ]
         FROM [          Variable [ Name=$ct ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -115,8 +111,7 @@
 ]
 FROM [  FunctionCall tpch.q22_customer_tmp@0[
   ]
-  AS
-  Variable [ Name=$ct ]
+  AS Variable [ Name=$ct ]
 ]
 Where
   OperatorExpr [
@@ -134,13 +129,10 @@
     Variable [ Name=$ct ]
     Field=cntrycode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$ct ]
-   AS ct
-  Variable [ Name=$avg ]
-   AS avg
+    ct:=Variable [ Name=$ct ]
+    avg:=Variable [ Name=$avg ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue562/query-issue562.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue562/query-issue562.3.ast
index a2adf67..d53884c 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue562/query-issue562.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue562/query-issue562.3.ast
@@ -27,8 +27,7 @@
     ]
     ]
     FROM [      Variable [ Name=$Customer ]
-      AS
-      Variable [ Name=$c ]
+      AS Variable [ Name=$c ]
     ]
     Let Variable [ Name=$phone_substr ]
       :=
@@ -101,8 +100,7 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$c ]
+        AS Variable [ Name=$c ]
       ]
       Let Variable [ Name=$phone_substr ]
         :=
@@ -190,8 +188,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -208,8 +205,7 @@
         ]
         ]
         FROM [          Variable [ Name=$ct ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -218,8 +214,7 @@
 ]
 FROM [  FunctionCall tpch.q22_customer_tmp@0[
   ]
-  AS
-  Variable [ Name=$ct ]
+  AS Variable [ Name=$ct ]
 ]
 Where
   OperatorExpr [
@@ -231,8 +226,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Orders]
           ]
-          AS
-          Variable [ Name=$o ]
+          AS Variable [ Name=$o ]
         ]
         Where
           OperatorExpr [
@@ -258,13 +252,10 @@
     Variable [ Name=$ct ]
     Field=cntrycode
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$ct ]
-   AS ct
-  Variable [ Name=$avg ]
-   AS avg
+    ct:=Variable [ Name=$ct ]
+    avg:=Variable [ Name=$avg ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue601/query-issue601.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue601/query-issue601.3.ast
index 85c3c0d..b0c1038 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue601/query-issue601.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue601/query-issue601.3.ast
@@ -19,8 +19,7 @@
         ]
         ]
         FROM [          Variable [ Name=#1 ]
-          AS
-          Variable [ Name=#2 ]
+          AS Variable [ Name=#2 ]
         ]
       )
     ]
@@ -30,8 +29,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Groupby
   Variable [ Name=$l_linenumber ]
@@ -40,10 +38,8 @@
     Variable [ Name=$l ]
     Field=l_linenumber
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue638/query-issue638.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue638/query-issue638.3.ast
index e455c20..bce73f5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue638/query-issue638.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue638/query-issue638.3.ast
@@ -24,8 +24,7 @@
         ]
         ]
         FROM [          Variable [ Name=$profit ]
-          AS
-          Variable [ Name=$pr ]
+          AS Variable [ Name=$pr ]
         ]
       )
     ]
@@ -58,8 +57,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$o ]
+      AS Variable [ Name=$o ]
 ,
       (
         SELECT ELEMENT [
@@ -117,8 +115,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [Part]
           ]
-          AS
-          Variable [ Name=$p ]
+          AS Variable [ Name=$p ]
 ,
           (
             SELECT ELEMENT [
@@ -184,8 +181,7 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [Partsupp]
               ]
-              AS
-              Variable [ Name=$ps ]
+              AS Variable [ Name=$ps ]
 ,
               (
                 SELECT ELEMENT [
@@ -272,14 +268,12 @@
                     FROM [                      FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Supplier]
                       ]
-                      AS
-                      Variable [ Name=$s ]
+                      AS Variable [ Name=$s ]
 ,
                       FunctionCall Metadata.dataset@1[
                         LiteralExpr [STRING] [Nation]
                       ]
-                      AS
-                      Variable [ Name=$n ]
+                      AS Variable [ Name=$n ]
                     ]
                     Where
                       OperatorExpr [
@@ -294,14 +288,12 @@
                         ]
                       ]
                   )
-                  AS
-                  Variable [ Name=$s1 ]
+                  AS Variable [ Name=$s1 ]
 ,
                   FunctionCall Metadata.dataset@1[
                     LiteralExpr [STRING] [LineItem]
                   ]
-                  AS
-                  Variable [ Name=$l ]
+                  AS Variable [ Name=$l ]
                 ]
                 Where
                   OperatorExpr [
@@ -316,8 +308,7 @@
                     ]
                   ]
               )
-              AS
-              Variable [ Name=$l1 ]
+              AS Variable [ Name=$l1 ]
             ]
             Where
               OperatorExpr [
@@ -346,8 +337,7 @@
                 ]
               ]
           )
-          AS
-          Variable [ Name=$l2 ]
+          AS Variable [ Name=$l2 ]
         ]
         Where
           OperatorExpr [
@@ -372,8 +362,7 @@
             ]
           ]
       )
-      AS
-      Variable [ Name=$l3 ]
+      AS Variable [ Name=$l3 ]
     ]
     Let Variable [ Name=$amount ]
       :=
@@ -427,8 +416,7 @@
         ]
       ]
   )
-  AS
-  Variable [ Name=$profit ]
+  AS Variable [ Name=$profit ]
 ]
 Groupby
   Variable [ Name=$nation ]
@@ -443,11 +431,9 @@
     Variable [ Name=$profit ]
     Field=o_year
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$profit ]
-   AS profit
+    profit:=Variable [ Name=$profit ]
   )
 
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785-2/query-issue785-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785-2/query-issue785-2.3.ast
index 3b22218..97006bf 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785-2/query-issue785-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785-2/query-issue785-2.3.ast
@@ -26,14 +26,12 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$nation ]
+      AS Variable [ Name=$nation ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [SelectedNation]
       ]
-      AS
-      Variable [ Name=$sn ]
+      AS Variable [ Name=$sn ]
     ]
     Where
       OperatorExpr [
@@ -71,20 +69,17 @@
     ]
     ]
     FROM [      Variable [ Name=$t ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customer]
       ]
-      AS
-      Variable [ Name=$customer ]
+      AS Variable [ Name=$customer ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$orders ]
+      AS Variable [ Name=$orders ]
     ]
     Where
       OperatorExpr [
@@ -125,17 +120,12 @@
         Variable [ Name=$n ]
         Field=n_nationkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$orders ]
-       AS orders
-      Variable [ Name=$customer ]
-       AS customer
-      Variable [ Name=$n ]
-       AS n
-      Variable [ Name=$t ]
-       AS t
+        orders:=Variable [ Name=$orders ]
+        customer:=Variable [ Name=$customer ]
+        n:=Variable [ Name=$n ]
+        t:=Variable [ Name=$t ]
       )
 
     Let Variable [ Name=$sum ]
@@ -149,8 +139,7 @@
           ]
           ]
           FROM [            Variable [ Name=$orders ]
-            AS
-            Variable [ Name=$o ]
+            AS Variable [ Name=$o ]
           ]
         )
       ]
@@ -187,8 +176,7 @@
       ]
       ]
       FROM [        Variable [ Name=$x ]
-        AS
-        Variable [ Name=$y ]
+        AS Variable [ Name=$y ]
       ]
       Orderby
         FieldAccessor [
@@ -204,8 +192,7 @@
 ]
 ]
 FROM [  Variable [ Name=$X ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Groupby
   Variable [ Name=$nation_key ]
@@ -214,14 +201,10 @@
     Variable [ Name=$x ]
     Field=nation_key
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$x ]
-   AS x
-  Variable [ Name=$X ]
-   AS X
-  Variable [ Name=$t ]
-   AS t
+    x:=Variable [ Name=$x ]
+    X:=Variable [ Name=$X ]
+    t:=Variable [ Name=$t ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785/query-issue785.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785/query-issue785.3.ast
index e59376e..602feb1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785/query-issue785.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue785/query-issue785.3.ast
@@ -26,8 +26,7 @@
       ]
       ]
       FROM [        Variable [ Name=$x ]
-        AS
-        Variable [ Name=$i ]
+        AS Variable [ Name=$i ]
       ]
       Groupby
         Variable [ Name=$od ]
@@ -36,17 +35,12 @@
           Variable [ Name=$i ]
           Field=order_date
         ]
-        GROUP AS
-        Variable [ Name=#3 ]
+        GROUP AS Variable [ Name=#3 ]
         (
-        Variable [ Name=$i ]
-         AS i
-        Variable [ Name=$x ]
-         AS x
-        Variable [ Name=$nation_key ]
-         AS nation_key
-        Variable [ Name=#2 ]
-         AS #2
+          i:=Variable [ Name=$i ]
+          x:=Variable [ Name=$x ]
+          nation_key:=Variable [ Name=$nation_key ]
+          #2:=Variable [ Name=#2 ]
         )
 
       Let Variable [ Name=$sum ]
@@ -60,8 +54,7 @@
             ]
             ]
             FROM [              Variable [ Name=$i ]
-              AS
-              Variable [ Name=$s ]
+              AS Variable [ Name=$s ]
             ]
           )
         ]
@@ -100,8 +93,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -111,20 +103,17 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Nation]
       ]
-      AS
-      Variable [ Name=$n ]
+      AS Variable [ Name=$n ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Customer]
       ]
-      AS
-      Variable [ Name=$customer ]
+      AS Variable [ Name=$customer ]
 ,
       FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Orders]
       ]
-      AS
-      Variable [ Name=$orders ]
+      AS Variable [ Name=$orders ]
     ]
     Where
       OperatorExpr [
@@ -165,20 +154,15 @@
         Variable [ Name=$n ]
         Field=n_nationkey
       ]
-      GROUP AS
-      Variable [ Name=#1 ]
+      GROUP AS Variable [ Name=#1 ]
       (
-      Variable [ Name=$orders ]
-       AS orders
-      Variable [ Name=$customer ]
-       AS customer
-      Variable [ Name=$n ]
-       AS n
+        orders:=Variable [ Name=$orders ]
+        customer:=Variable [ Name=$customer ]
+        n:=Variable [ Name=$n ]
       )
 
   )
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Groupby
   Variable [ Name=$nation_key ]
@@ -187,10 +171,8 @@
     Variable [ Name=$x ]
     Field=nation_key
   ]
-  GROUP AS
-  Variable [ Name=#2 ]
+  GROUP AS Variable [ Name=#2 ]
   (
-  Variable [ Name=$x ]
-   AS x
+    x:=Variable [ Name=$x ]
   )
 
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue786/query-issue786.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue786/query-issue786.3.ast
index 4cd1b1f..2c51fb4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue786/query-issue786.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue786/query-issue786.3.ast
@@ -39,14 +39,12 @@
       FROM [        FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Orders]
         ]
-        AS
-        Variable [ Name=$orders ]
+        AS Variable [ Name=$orders ]
 ,
         FunctionCall Metadata.dataset@1[
           LiteralExpr [STRING] [Customer]
         ]
-        AS
-        Variable [ Name=$customer ]
+        AS Variable [ Name=$customer ]
       ]
       Where
         OperatorExpr [
@@ -81,17 +79,12 @@
           Variable [ Name=$orders ]
           Field=o_orderdate
         ]
-        GROUP AS
-        Variable [ Name=#1 ]
+        GROUP AS Variable [ Name=#1 ]
         (
-        Variable [ Name=$customer ]
-         AS customer
-        Variable [ Name=$orders ]
-         AS orders
-        Variable [ Name=$sn ]
-         AS sn
-        Variable [ Name=$nation ]
-         AS nation
+          customer:=Variable [ Name=$customer ]
+          orders:=Variable [ Name=$orders ]
+          sn:=Variable [ Name=$sn ]
+          nation:=Variable [ Name=$nation ]
         )
 
       Let Variable [ Name=$sum ]
@@ -105,8 +98,7 @@
             ]
             ]
             FROM [              Variable [ Name=$orders ]
-              AS
-              Variable [ Name=$o ]
+              AS Variable [ Name=$o ]
             ]
           )
         ]
@@ -123,14 +115,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Nation]
   ]
-  AS
-  Variable [ Name=$nation ]
+  AS Variable [ Name=$nation ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [SelectedNation]
   ]
-  AS
-  Variable [ Name=$sn ]
+  AS Variable [ Name=$sn ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-2/query-issue810-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-2/query-issue810-2.3.ast
index 09ab092..91bebe6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-2/query-issue810-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-2/query-issue810-2.3.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -56,11 +55,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Let Variable [ Name=$cheaps ]
@@ -70,8 +67,7 @@
     Variable [ Name=$m ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$m ]
+      AS Variable [ Name=$m ]
     ]
     Where
       OperatorExpr [
@@ -113,8 +109,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$a ]
+      AS Variable [ Name=$a ]
     ]
   )
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-3/query-issue810-3.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-3/query-issue810-3.3.ast
index 2e01301..1657bd5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-3/query-issue810-3.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810-3/query-issue810-3.3.ast
@@ -45,8 +45,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -70,11 +69,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Let Variable [ Name=$expensives ]
@@ -87,8 +84,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -107,8 +103,7 @@
     Variable [ Name=$i ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
     Where
       OperatorExpr [
@@ -150,8 +145,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 Let Variable [ Name=$disc_prices ]
@@ -175,8 +169,7 @@
     ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$i ]
+      AS Variable [ Name=$i ]
     ]
   )
 Orderby
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810/query-issue810.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810/query-issue810.3.ast
index 430ea72..9c62a28 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810/query-issue810.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue810/query-issue810.3.ast
@@ -31,8 +31,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [LineItem]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
@@ -56,11 +55,9 @@
     Variable [ Name=$l ]
     Field=l_linestatus
   ]
-  GROUP AS
-  Variable [ Name=#1 ]
+  GROUP AS Variable [ Name=#1 ]
   (
-  Variable [ Name=$l ]
-   AS l
+    l:=Variable [ Name=$l ]
   )
 
 Let Variable [ Name=$cheap ]
@@ -70,8 +67,7 @@
     Variable [ Name=$m ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$m ]
+      AS Variable [ Name=$m ]
     ]
     Where
       OperatorExpr [
@@ -90,8 +86,7 @@
     Variable [ Name=$a ]
     ]
     FROM [      Variable [ Name=$l ]
-      AS
-      Variable [ Name=$a ]
+      AS Variable [ Name=$a ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827-2/query-issue827-2.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827-2/query-issue827-2.3.ast
index ad296a8..a11b5e2 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827-2/query-issue827-2.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827-2/query-issue827-2.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -44,8 +43,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -75,8 +73,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -115,8 +112,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -135,8 +131,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
         Where
           OperatorExpr [
@@ -164,8 +159,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -184,8 +178,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$i ]
+          AS Variable [ Name=$i ]
         ]
       )
     ]
@@ -201,8 +194,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827/query-issue827.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827/query-issue827.3.ast
index 8c3f767..7ebf5f7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827/query-issue827.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/tpch/query-issue827/query-issue827.3.ast
@@ -15,8 +15,7 @@
         FROM [          FunctionCall Metadata.dataset@1[
             LiteralExpr [STRING] [LineItem]
           ]
-          AS
-          Variable [ Name=$l ]
+          AS Variable [ Name=$l ]
         ]
       )
     ]
@@ -39,12 +38,10 @@
             FROM [              FunctionCall Metadata.dataset@1[
                 LiteralExpr [STRING] [LineItem]
               ]
-              AS
-              Variable [ Name=$l ]
+              AS Variable [ Name=$l ]
             ]
           )
-          AS
-          Variable [ Name=$e ]
+          AS Variable [ Name=$e ]
         ]
       )
     ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/opentype_orderby_01/opentype_orderby_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/opentype_orderby_01/opentype_orderby_01.3.ast
index 6e865d00..3bfb16d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/opentype_orderby_01/opentype_orderby_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/opentype_orderby_01/opentype_orderby_01.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_01/promotion_closedtype_field_vs_closedtype_field_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_01/promotion_closedtype_field_vs_closedtype_field_01.3.ast
index f9aa2ab..0213ef7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_01/promotion_closedtype_field_vs_closedtype_field_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_01/promotion_closedtype_field_vs_closedtype_field_01.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_02/promotion_closedtype_field_vs_closedtype_field_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_02/promotion_closedtype_field_vs_closedtype_field_02.3.ast
index 074b476..64df8db 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_02/promotion_closedtype_field_vs_closedtype_field_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_02/promotion_closedtype_field_vs_closedtype_field_02.3.ast
@@ -43,14 +43,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_03/promotion_closedtype_field_vs_closedtype_field_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_03/promotion_closedtype_field_vs_closedtype_field_03.3.ast
index 51d0ae9..94a96b3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_03/promotion_closedtype_field_vs_closedtype_field_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_03/promotion_closedtype_field_vs_closedtype_field_03.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_04/promotion_closedtype_field_vs_closedtype_field_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_04/promotion_closedtype_field_vs_closedtype_field_04.3.ast
index 544d403..7f64ba5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_04/promotion_closedtype_field_vs_closedtype_field_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_04/promotion_closedtype_field_vs_closedtype_field_04.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_05/promotion_closedtype_field_vs_closedtype_field_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_05/promotion_closedtype_field_vs_closedtype_field_05.3.ast
index 3c1440a..a2dace8 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_05/promotion_closedtype_field_vs_closedtype_field_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_closedtype_field_05/promotion_closedtype_field_vs_closedtype_field_05.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_01/promotion_closedtype_field_vs_constant_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_01/promotion_closedtype_field_vs_constant_01.3.ast
index 3965471..9c92b73 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_01/promotion_closedtype_field_vs_constant_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_01/promotion_closedtype_field_vs_constant_01.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_02/promotion_closedtype_field_vs_constant_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_02/promotion_closedtype_field_vs_constant_02.3.ast
index b4551ab..dc2d65e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_02/promotion_closedtype_field_vs_constant_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_02/promotion_closedtype_field_vs_constant_02.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_03/promotion_closedtype_field_vs_constant_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_03/promotion_closedtype_field_vs_constant_03.3.ast
index 0cf8281..ce149e5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_03/promotion_closedtype_field_vs_constant_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_03/promotion_closedtype_field_vs_constant_03.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_04/promotion_closedtype_field_vs_constant_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_04/promotion_closedtype_field_vs_constant_04.3.ast
index 7f644e6..bb6e108 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_04/promotion_closedtype_field_vs_constant_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_04/promotion_closedtype_field_vs_constant_04.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_05/promotion_closedtype_field_vs_constant_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_05/promotion_closedtype_field_vs_constant_05.3.ast
index aa1e0d3..9c09b76 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_05/promotion_closedtype_field_vs_constant_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_05/promotion_closedtype_field_vs_constant_05.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_06/promotion_closedtype_field_vs_constant_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_06/promotion_closedtype_field_vs_constant_06.3.ast
index 7f644e6..bb6e108 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_06/promotion_closedtype_field_vs_constant_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_06/promotion_closedtype_field_vs_constant_06.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_07/promotion_closedtype_field_vs_constant_07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_07/promotion_closedtype_field_vs_constant_07.3.ast
index 5594115..f72fe79 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_07/promotion_closedtype_field_vs_constant_07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_07/promotion_closedtype_field_vs_constant_07.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_08/promotion_closedtype_field_vs_constant_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_08/promotion_closedtype_field_vs_constant_08.3.ast
index eaaaa6e..6d9aeb1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_08/promotion_closedtype_field_vs_constant_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_08/promotion_closedtype_field_vs_constant_08.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_09/promotion_closedtype_field_vs_constant_09.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_09/promotion_closedtype_field_vs_constant_09.3.ast
index fe2fdfb..c9bb1db 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_09/promotion_closedtype_field_vs_constant_09.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_09/promotion_closedtype_field_vs_constant_09.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_10/promotion_closedtype_field_vs_constant_10.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_10/promotion_closedtype_field_vs_constant_10.3.ast
index c346569..ba64cdb 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_10/promotion_closedtype_field_vs_constant_10.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_10/promotion_closedtype_field_vs_constant_10.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_11/promotion_closedtype_field_vs_constant_11.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_11/promotion_closedtype_field_vs_constant_11.3.ast
index 4b743fe..2b34755 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_11/promotion_closedtype_field_vs_constant_11.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_constant_11/promotion_closedtype_field_vs_constant_11.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_01/promotion_closedtype_field_vs_opentype_field_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_01/promotion_closedtype_field_vs_opentype_field_01.3.ast
index 13d89f7..ba51a7d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_01/promotion_closedtype_field_vs_opentype_field_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_01/promotion_closedtype_field_vs_opentype_field_01.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_02/promotion_closedtype_field_vs_opentype_field_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_02/promotion_closedtype_field_vs_opentype_field_02.3.ast
index ff2e1cd..bd77024 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_02/promotion_closedtype_field_vs_opentype_field_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_02/promotion_closedtype_field_vs_opentype_field_02.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_03/promotion_closedtype_field_vs_opentype_field_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_03/promotion_closedtype_field_vs_opentype_field_03.3.ast
index 2cce29f..b98cf75 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_03/promotion_closedtype_field_vs_opentype_field_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_03/promotion_closedtype_field_vs_opentype_field_03.3.ast
@@ -39,14 +39,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_04/promotion_closedtype_field_vs_opentype_field_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_04/promotion_closedtype_field_vs_opentype_field_04.3.ast
index 94c4097..c35de65 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_04/promotion_closedtype_field_vs_opentype_field_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_closedtype_field_vs_opentype_field_04/promotion_closedtype_field_vs_opentype_field_04.3.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_01/promotion_opentype_field_vs_constant_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_01/promotion_opentype_field_vs_constant_01.3.ast
index b0faed9..d9b7e47 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_01/promotion_opentype_field_vs_constant_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_01/promotion_opentype_field_vs_constant_01.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_02/promotion_opentype_field_vs_constant_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_02/promotion_opentype_field_vs_constant_02.3.ast
index 8b3dd65..3a70fcd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_02/promotion_opentype_field_vs_constant_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_02/promotion_opentype_field_vs_constant_02.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_03/promotion_opentype_field_vs_constant_03.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_03/promotion_opentype_field_vs_constant_03.3.ast
index 6e5db45..2a43942 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_03/promotion_opentype_field_vs_constant_03.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_03/promotion_opentype_field_vs_constant_03.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_04/promotion_opentype_field_vs_constant_04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_04/promotion_opentype_field_vs_constant_04.3.ast
index d2e4c76..280cc68 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_04/promotion_opentype_field_vs_constant_04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_04/promotion_opentype_field_vs_constant_04.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_05/promotion_opentype_field_vs_constant_05.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_05/promotion_opentype_field_vs_constant_05.3.ast
index c2788a6..b3157c6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_05/promotion_opentype_field_vs_constant_05.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_05/promotion_opentype_field_vs_constant_05.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_06/promotion_opentype_field_vs_constant_06.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_06/promotion_opentype_field_vs_constant_06.3.ast
index bdb3906..d75525e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_06/promotion_opentype_field_vs_constant_06.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_06/promotion_opentype_field_vs_constant_06.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_07/promotion_opentype_field_vs_constant_07.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_07/promotion_opentype_field_vs_constant_07.3.ast
index 8f5fc41..2fec640 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_07/promotion_opentype_field_vs_constant_07.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_07/promotion_opentype_field_vs_constant_07.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_08/promotion_opentype_field_vs_constant_08.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_08/promotion_opentype_field_vs_constant_08.3.ast
index 972ced0..eeeaaf0 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_08/promotion_opentype_field_vs_constant_08.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_constant_08/promotion_opentype_field_vs_constant_08.3.ast
@@ -23,8 +23,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_01/promotion_opentype_field_vs_opentype_field_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_01/promotion_opentype_field_vs_opentype_field_01.3.ast
index 719ef23..7e17d14 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_01/promotion_opentype_field_vs_opentype_field_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_01/promotion_opentype_field_vs_opentype_field_01.3.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_02/promotion_opentype_field_vs_opentype_field_02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_02/promotion_opentype_field_vs_opentype_field_02.3.ast
index e011d74..5230c60 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_02/promotion_opentype_field_vs_opentype_field_02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/promotion_opentype_field_vs_opentype_field_02/promotion_opentype_field_vs_opentype_field_02.3.ast
@@ -31,14 +31,12 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [empDataset]
   ]
-  AS
-  Variable [ Name=$emp ]
+  AS Variable [ Name=$emp ]
 ,
   FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [deptDataset]
   ]
-  AS
-  Variable [ Name=$dept ]
+  AS Variable [ Name=$dept ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_0/type_promotion_0.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_0/type_promotion_0.3.ast
index 1652835..60d0074 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_0/type_promotion_0.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_0/type_promotion_0.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Int64Test]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_1/type_promotion_1.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_1/type_promotion_1.3.ast
index 0c83f61..98f9e80 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_1/type_promotion_1.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/types/type_promotion_1/type_promotion_1.3.ast
@@ -6,6 +6,5 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [TestSet]
   ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/invoke-private-function/invoke-private-function.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/invoke-private-function/invoke-private-function.3.ast
index 4d168c2..259fce4 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/invoke-private-function/invoke-private-function.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/invoke-private-function/invoke-private-function.3.ast
@@ -128,6 +128,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$results ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue201/query-issue201.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue201/query-issue201.3.ast
index c19b7e0..5560bd3 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue201/query-issue201.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue201/query-issue201.3.ast
@@ -10,6 +10,5 @@
 Variable [ Name=$i ]
 ]
 FROM [  Variable [ Name=$x ]
-  AS
-  Variable [ Name=$i ]
+  AS Variable [ Name=$i ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue244/query-issue244.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue244/query-issue244.3.ast
index 39d4a9d..f1655e7 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue244/query-issue244.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue244/query-issue244.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [t2]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Orderby
   FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.2.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.2.ast
index beae2d4..4826f57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.2.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.2.ast
@@ -8,8 +8,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Metadata.Function]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.4.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.4.ast
index beae2d4..4826f57 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.4.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/query-issue489/query-issue489.4.ast
@@ -8,8 +8,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [Metadata.Function]
       ]
-      AS
-      Variable [ Name=$x ]
+      AS Variable [ Name=$x ]
     ]
     Where
       OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf01/udf01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf01/udf01.3.ast
index 4d96d9d..aa9d183 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf01/udf01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf01/udf01.3.ast
@@ -17,6 +17,5 @@
     LiteralExpr [LONG] [9]
     LiteralExpr [LONG] [10]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf02/udf02.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf02/udf02.3.ast
index c5d0ad6..1790bdd 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf02/udf02.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf02/udf02.3.ast
@@ -15,6 +15,5 @@
       LiteralExpr [LONG] [4]
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf04/udf04.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf04/udf04.3.ast
index eb3db35..fcd2453 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf04/udf04.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf04/udf04.3.ast
@@ -58,6 +58,5 @@
       )
     ]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf09/udf09.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf09/udf09.3.ast
index 21264bc..4965a73 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf09/udf09.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf09/udf09.3.ast
@@ -9,8 +9,7 @@
     FROM [      FunctionCall Metadata.dataset@1[
         LiteralExpr [STRING] [test.t1]
       ]
-      AS
-      Variable [ Name=$a ]
+      AS Variable [ Name=$a ]
     ]
     Orderby
       FieldAccessor [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf11/udf11.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf11/udf11.3.ast
index a7fad06..e59a071 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf11/udf11.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf11/udf11.3.ast
@@ -5,6 +5,5 @@
 ]
 FROM [  FunctionCall test.OList@0[
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf19/udf19.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf19/udf19.3.ast
index 5d459e1..e0fae3a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf19/udf19.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf19/udf19.3.ast
@@ -13,8 +13,7 @@
     LiteralExpr [LONG] [10]
     LiteralExpr [LONG] [12]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf20/udf20.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf20/udf20.3.ast
index badfd49..6aa5d8e 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf20/udf20.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf20/udf20.3.ast
@@ -24,8 +24,7 @@
     LiteralExpr [LONG] [10]
     LiteralExpr [LONG] [12]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf21/udf21.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf21/udf21.3.ast
index d88293a..243e7cc 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf21/udf21.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf21/udf21.3.ast
@@ -28,8 +28,7 @@
     LiteralExpr [LONG] [65]
     LiteralExpr [LONG] [75]
   ]
-  AS
-  Variable [ Name=$a ]
+  AS Variable [ Name=$a ]
 ]
 Where
   FunctionCall test.isOdd@1[
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf23/udf23.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf23/udf23.3.ast
index dac2422..6280700 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf23/udf23.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf23/udf23.3.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Dataset]
   ]
-  AS
-  Variable [ Name=$l ]
+  AS Variable [ Name=$l ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf28/udf28.2.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf28/udf28.2.ast
index 343f76b..95a8e86 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf28/udf28.2.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/user-defined-functions/udf28/udf28.2.ast
@@ -6,8 +6,7 @@
 FROM [  FunctionCall Metadata.dataset@1[
     LiteralExpr [STRING] [Metadata.Function]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
 Where
   OperatorExpr [
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/writers/print_01/print_01.3.ast b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/writers/print_01/print_01.3.ast
index bdd0649..74a29ba 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/writers/print_01/print_01.3.ast
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/writers/print_01/print_01.3.ast
@@ -7,6 +7,5 @@
     LiteralExpr [STRING] [foo]
     LiteralExpr [STRING] [bar]
   ]
-  AS
-  Variable [ Name=$x ]
+  AS Variable [ Name=$x ]
 ]
diff --git a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppAstPrintVisitor.java b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppAstPrintVisitor.java
index 0f36646..a613e90 100644
--- a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppAstPrintVisitor.java
+++ b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/visitor/SqlppAstPrintVisitor.java
@@ -81,11 +81,11 @@
     @Override
     public Void visit(FromTerm fromTerm, Integer step) throws AsterixException {
         fromTerm.getLeftExpression().accept(this, step);
-        out.println(skip(step) + "AS");
-        fromTerm.getLeftVariable().accept(this, step);
+        out.print(skip(step) + "AS ");
+        fromTerm.getLeftVariable().accept(this, 0);
         if (fromTerm.hasPositionalVariable()) {
-            out.println(skip(step) + "AT");
-            fromTerm.getPositionalVariable().accept(this, step);
+            out.println(" AT ");
+            fromTerm.getPositionalVariable().accept(this, 0);
         }
         if (fromTerm.hasCorrelateClauses()) {
             for (AbstractBinaryCorrelateClause correlateClause : fromTerm.getCorrelateClauses()) {
@@ -99,11 +99,11 @@
     public Void visit(JoinClause joinClause, Integer step) throws AsterixException {
         out.println(skip(step) + joinClause.getJoinType() + " JOIN");
         joinClause.getRightExpression().accept(this, step + 1);
-        out.println(skip(step + 1) + "AS");
-        joinClause.getRightVariable().accept(this, step + 1);
+        out.print(skip(step + 1) + "AS ");
+        joinClause.getRightVariable().accept(this, 0);
         if (joinClause.hasPositionalVariable()) {
-            out.println(skip(step + 1) + "AT");
-            joinClause.getPositionalVariable().accept(this, step + 1);
+            out.print(" AT ");
+            joinClause.getPositionalVariable().accept(this, 0);
         }
         out.println(skip(step + 1) + "ON");
         joinClause.getConditionExpression().accept(this, step + 1);
@@ -114,11 +114,11 @@
     public Void visit(NestClause nestClause, Integer step) throws AsterixException {
         out.println(skip(step) + nestClause.getJoinType() + " NEST");
         nestClause.getRightExpression().accept(this, step + 1);
-        out.println(skip(step + 1) + "AS");
-        nestClause.getRightVariable().accept(this, step + 1);
+        out.print(skip(step + 1) + "AS ");
+        nestClause.getRightVariable().accept(this, 0);
         if (nestClause.hasPositionalVariable()) {
-            out.println(skip(step + 1) + "AT");
-            nestClause.getPositionalVariable().accept(this, step + 1);
+            out.print(" AT ");
+            nestClause.getPositionalVariable().accept(this, 0);
         }
         out.println(skip(step + 1) + "ON");
         nestClause.getConditionExpression().accept(this, step + 1);
@@ -230,11 +230,11 @@
     public Void visit(UnnestClause unnestClause, Integer step) throws AsterixException {
         out.println(skip(step) + unnestClause.getJoinType() + " UNNEST");
         unnestClause.getRightExpression().accept(this, step + 1);
-        out.println(skip(step + 1) + " AS");
-        unnestClause.getRightVariable().accept(this, step + 1);
+        out.print(skip(step + 1) + " AS ");
+        unnestClause.getRightVariable().accept(this, 0);
         if (unnestClause.hasPositionalVariable()) {
-            out.println(skip(step + 1) + " AT");
-            unnestClause.getPositionalVariable().accept(this, step + 1);
+            out.println(" AT");
+            unnestClause.getPositionalVariable().accept(this, 0);
         }
         return null;
     }
@@ -277,13 +277,13 @@
             pair.getExpr().accept(this, step + 1);
         }
         if (gc.hasGroupVar()) {
-            out.println(skip(step + 1) + "GROUP AS");
-            gc.getGroupVar().accept(this, step + 1);
+            out.print(skip(step + 1) + "GROUP AS ");
+            gc.getGroupVar().accept(this, 0);
             if (gc.hasGroupFieldList()) {
                 out.println(skip(step + 1) + "(");
                 for (Pair<Expression, Identifier> field : gc.getGroupFieldList()) {
-                    field.first.accept(this, step + 1);
-                    out.println(skip(step + 1) + " AS " + field.second);
+                    out.print(skip(step + 2) + field.second + ":=");
+                    field.first.accept(this, 0);
                 }
                 out.println(skip(step + 1) + ")");
             }