Add NoSQL grammar:
Please make FROM a synonym for FOR, SELECT a synonym for RETURN, and WITH a synonym for LET.  No semantic changes here - just some keyword synonyms.

Change-Id: Iffba1c25c611fc420b6e223bcdde75a9244035e4
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/181
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <westmann@gmail.com>
diff --git a/asterix-app/src/test/resources/AQLTS/queries-sql-like/nestedFLWOGR2.aql b/asterix-app/src/test/resources/AQLTS/queries-sql-like/nestedFLWOGR2.aql
new file mode 100644
index 0000000..3ceca7a
--- /dev/null
+++ b/asterix-app/src/test/resources/AQLTS/queries-sql-like/nestedFLWOGR2.aql
@@ -0,0 +1,6 @@
+from $i in [1,2,30,from $tmp in dataset('number') select $tmp]
+from $j in {{4,5,6}}
+select
+    from $k in if ($i>$j) then $i else $j
+    where $k <10
+    select $k