Fix for issue 813 - enabling prefix btree search with non-matching predicates

Change-Id: I59eb43afa7dbcabd7f43269566d75c9361c55386
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/171
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>
diff --git a/asterix-app/src/test/resources/optimizerts/queries/btree-index/btree-secondary-45.aql b/asterix-app/src/test/resources/optimizerts/queries/btree-index/btree-secondary-45.aql
index cc33e5a..62c30dc 100644
--- a/asterix-app/src/test/resources/optimizerts/queries/btree-index/btree-secondary-45.aql
+++ b/asterix-app/src/test/resources/optimizerts/queries/btree-index/btree-secondary-45.aql
@@ -6,6 +6,8 @@
  *  Date            : 13th Aug 2012
  */
 
+// Positive test - prefix search
+
 drop dataverse test if exists;
 create dataverse test;
 use dataverse test;
@@ -23,5 +25,5 @@
 create index sec_Idx on testdst(fname,lname);
 
 for $emp in dataset('testdst') 
-where $emp.fname > "Craig" and $emp.lname > "Kevin" and $emp.fname < "Mary" and $emp.lname < "Tomes"
+where $emp.fname = "Julio" and $emp.lname < "Xu"
 return $emp