http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var/scalar_var.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var/scalar_var.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var/scalar_var.3.ast
new file mode 100644
index 0000000..71b0a16
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var/scalar_var.3.ast
@@ -0,0 +1,222 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      Let Variable [ Name=$i8 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i16 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i32 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i64 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$f ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$d ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      SELECT ELEMENT [
+      Variable [ Name=$i ]
+      ]
+      FROM [        OrderedListConstructor [
+          Variable [ Name=$i8 ]
+          Variable [ Name=$i16 ]
+          Variable [ Name=$i32 ]
+          Variable [ Name=$i64 ]
+          Variable [ Name=$f ]
+          Variable [ Name=$d ]
+        ]
+        AS Variable [ Name=$i ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      Let Variable [ Name=$i8 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i16 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i32 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$i64 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$f ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      Let Variable [ Name=$d ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [3]
+            ]
+          ]
+        ]
+      SELECT ELEMENT [
+      Variable [ Name=$i ]
+      ]
+      FROM [        OrderedListConstructor [
+          Variable [ Name=$i8 ]
+          Variable [ Name=$i16 ]
+          Variable [ Name=$i32 ]
+          Variable [ Name=$i64 ]
+          Variable [ Name=$f ]
+          Variable [ Name=$d ]
+        ]
+        AS Variable [ Name=$i ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.3.ast
new file mode 100644
index 0000000..a4126bb
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_empty/scalar_var_empty.3.ast
@@ -0,0 +1,27 @@
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        OrderedListConstructor [
+        ]
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        OrderedListConstructor [
+        ]
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.3.ast
new file mode 100644
index 0000000..22e3104
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/scalar_var_null/scalar_var_null.3.ast
@@ -0,0 +1,234 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      Let Variable [ Name=$i8 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i16 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i32 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i64 ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$f ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$d ]
+        :=
+        FunctionCall asterix.sql-var@1[
+          OrderedListConstructor [
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      SELECT ELEMENT [
+      Variable [ Name=$i ]
+      ]
+      FROM [        OrderedListConstructor [
+          Variable [ Name=$i8 ]
+          Variable [ Name=$i16 ]
+          Variable [ Name=$i32 ]
+          Variable [ Name=$i64 ]
+          Variable [ Name=$f ]
+          Variable [ Name=$d ]
+        ]
+        AS Variable [ Name=$i ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      Let Variable [ Name=$i8 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int8@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i16 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int16@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i32 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int32@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$i64 ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.int64@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$f ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.float@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      Let Variable [ Name=$d ]
+        :=
+        FunctionCall asterix.sql-var_pop@1[
+          OrderedListConstructor [
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [1]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [2]
+            ]
+            FunctionCall test.double@1[
+              LiteralExpr [STRING] [3]
+            ]
+            LiteralExpr [NULL]
+          ]
+        ]
+      SELECT ELEMENT [
+      Variable [ Name=$i ]
+      ]
+      FROM [        OrderedListConstructor [
+          Variable [ Name=$i8 ]
+          Variable [ Name=$i16 ]
+          Variable [ Name=$i32 ]
+          Variable [ Name=$i64 ]
+          Variable [ Name=$f ]
+          Variable [ Name=$d ]
+        ]
+        AS Variable [ Name=$i ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.1.ast
new file mode 100644
index 0000000..a61c9df
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double/serial_var_double.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.1.ast
new file mode 100644
index 0000000..a61c9df
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_double_null/serial_var_double_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.1.ast
new file mode 100644
index 0000000..a61c9df
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_empty/serial_var_empty.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.1.ast
new file mode 100644
index 0000000..9af248f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : float
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float/serial_var_float.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.1.ast
new file mode 100644
index 0000000..9af248f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : float
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_float_null/serial_var_float_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.1.ast
new file mode 100644
index 0000000..16d25a8
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : smallint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16/serial_var_int16.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.1.ast
new file mode 100644
index 0000000..16d25a8
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : smallint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int16_null/serial_var_int16_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.1.ast
new file mode 100644
index 0000000..6eaf31a
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : integer
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32/serial_var_int32.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.1.ast
new file mode 100644
index 0000000..6eaf31a
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : integer
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int32_null/serial_var_int32_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.1.ast
new file mode 100644
index 0000000..7911712
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : bigint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64/serial_var_int64.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.1.ast
new file mode 100644
index 0000000..7911712
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : bigint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int64_null/serial_var_int64_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.1.ast
new file mode 100644
index 0000000..44c9cde
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : tinyint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.3.ast
new file mode 100644
index 0000000..91b3b2f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8/serial_var_int8.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=val
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.1.ast
new file mode 100644
index 0000000..44c9cde
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : tinyint
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.3.ast
new file mode 100644
index 0000000..a5e419b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_int8_null/serial_var_int8_null.3.ast
@@ -0,0 +1,57 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#2 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#2 ]
+    ]
+  )
+]
+var
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      FieldAccessor [
+        Variable [ Name=#3 ]
+        Field=t
+      ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=#1 ]
+      AS Variable [ Name=#3 ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=#1 ]
+  (
+    t:=Variable [ Name=$t ]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.1.ast
new file mode 100644
index 0000000..a61c9df
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.3.ast
new file mode 100644
index 0000000..5ed5c3a
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_mixed/serial_var_int64_null.3.ast
@@ -0,0 +1,40 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      Variable [ Name=$g ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=$g ]
+      AS Variable [ Name=$g ]
+    ]
+  )
+]
+var
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=$g ]
+  (
+    valplus:=FunctionCall asterix.field-access-by-name@2[
+  Variable [ Name=$t ]
+  LiteralExpr [STRING] [valplus]
+]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.1.ast
new file mode 100644
index 0000000..a61c9df
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.1.ast
@@ -0,0 +1,9 @@
+DataverseUse test
+TypeDecl TestType [
+  open RecordType {
+    id : bigint,
+    gid : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.2.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.2.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.2.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.2.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.3.ast
new file mode 100644
index 0000000..fff6e1a
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/serial_var_pop_mixed/serial_var_pop_int64_null.3.ast
@@ -0,0 +1,40 @@
+DataverseUse test
+Query:
+SELECT [
+Variable [ Name=$gid ]
+gid
+FunctionCall asterix.sql-var_pop@1[
+  (
+    SELECT ELEMENT [
+    FieldAccessor [
+      Variable [ Name=$g ]
+      Field=valplus
+    ]
+    ]
+    FROM [      Variable [ Name=$g ]
+      AS Variable [ Name=$g ]
+    ]
+  )
+]
+var_pop
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.Test]
+  ]
+  AS Variable [ Name=$t ]
+]
+Groupby
+  Variable [ Name=$gid ]
+  :=
+  FieldAccessor [
+    Variable [ Name=$t ]
+    Field=gid
+  ]
+  GROUP AS Variable [ Name=$g ]
+  (
+    valplus:=FunctionCall asterix.field-access-by-name@2[
+  Variable [ Name=$t ]
+  LiteralExpr [STRING] [valplus]
+]
+  )
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.1.ast
new file mode 100644
index 0000000..916a59e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.1.ast
@@ -0,0 +1 @@
+DataverseUse test

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.3.ast
new file mode 100644
index 0000000..9037555
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double/var_double.3.ast
@@ -0,0 +1,51 @@
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              LiteralExpr [DOUBLE] [1.0]
+              LiteralExpr [DOUBLE] [2.0]
+              FunctionCall null.double@1[
+                LiteralExpr [STRING] [3.0]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              LiteralExpr [DOUBLE] [1.0]
+              LiteralExpr [DOUBLE] [2.0]
+              FunctionCall null.double@1[
+                LiteralExpr [STRING] [3.0]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.1.ast
new file mode 100644
index 0000000..2b387f8
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.1.ast
@@ -0,0 +1,13 @@
+DataverseUse test
+TypeDecl NumericType [
+  open RecordType {
+    id : integer,
+    int8Field : tinyint?,
+    int16Field : smallint?,
+    int32Field : integer?,
+    int64Field : bigint?,
+    floatField : float?,
+    doubleField : double?
+  }
+]
+DatasetDecl Numeric(NumericType)is an external dataset

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.3.ast
new file mode 100644
index 0000000..0060c07
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_double_null/var_double_null.3.ast
@@ -0,0 +1,42 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    FunctionCall asterix.sql-var@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=doubleField
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    FunctionCall asterix.sql-var_pop@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=doubleField
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.3.ast
new file mode 100644
index 0000000..c724d18
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_01/var_empty_01.3.ast
@@ -0,0 +1,60 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              LiteralExpr [LONG] [1]
+              LiteralExpr [LONG] [2]
+              LiteralExpr [LONG] [3]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+          Where
+            OperatorExpr [
+              Variable [ Name=$x ]
+              >
+              LiteralExpr [LONG] [10]
+            ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              LiteralExpr [LONG] [1]
+              LiteralExpr [LONG] [2]
+              LiteralExpr [LONG] [3]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+          Where
+            OperatorExpr [
+              Variable [ Name=$x ]
+              >
+              LiteralExpr [LONG] [10]
+            ]
+        )
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.1.ast
new file mode 100644
index 0000000..baf977e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.1.ast
@@ -0,0 +1,8 @@
+DataverseUse test
+TypeDecl TestType [
+  closed RecordType {
+    id : bigint,
+    val : double
+  }
+]
+DatasetDecl Test(TestType) partitioned by [[id]]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.3.ast
new file mode 100644
index 0000000..1705103
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_empty_02/var_empty_02.3.ast
@@ -0,0 +1,50 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          FieldAccessor [
+            Variable [ Name=$x ]
+            Field=val
+          ]
+          ]
+          FROM [            FunctionCall asterix.dataset@1[
+              LiteralExpr [STRING] [test.Test]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          FieldAccessor [
+            Variable [ Name=$x ]
+            Field=val
+          ]
+          ]
+          FROM [            FunctionCall asterix.dataset@1[
+              LiteralExpr [STRING] [test.Test]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.3.ast
new file mode 100644
index 0000000..592907d
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float/var_float.3.ast
@@ -0,0 +1,60 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.float@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.1.ast
new file mode 100644
index 0000000..b01283e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.1.ast
@@ -0,0 +1,13 @@
+DataverseUse test
+TypeDecl NumericType [
+  open RecordType {
+    id : bigint,
+    int8Field : tinyint?,
+    int16Field : smallint?,
+    int32Field : integer?,
+    int64Field : bigint?,
+    floatField : float?,
+    doubleField : double?
+  }
+]
+DatasetDecl Numeric(NumericType)is an external dataset

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.3.ast
new file mode 100644
index 0000000..0587de5
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_float_null/var_float_nu.3.ast
@@ -0,0 +1,42 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    FunctionCall asterix.sql-var@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=floatField
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    FunctionCall asterix.sql-var_pop@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=floatField
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.3.ast
new file mode 100644
index 0000000..f741ad6
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16/var_int16.3.ast
@@ -0,0 +1,60 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.int16@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.1.ast
new file mode 100644
index 0000000..b01283e
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.1.ast
@@ -0,0 +1,13 @@
+DataverseUse test
+TypeDecl NumericType [
+  open RecordType {
+    id : bigint,
+    int8Field : tinyint?,
+    int16Field : smallint?,
+    int32Field : integer?,
+    int64Field : bigint?,
+    floatField : float?,
+    doubleField : double?
+  }
+]
+DatasetDecl Numeric(NumericType)is an external dataset

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.3.ast
new file mode 100644
index 0000000..1d41f05
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int16_null/var_int16_null.3.ast
@@ -0,0 +1,42 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    FunctionCall asterix.sql-var@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=int16Field
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    FunctionCall asterix.sql-var_pop@1[
+      (
+        SELECT ELEMENT [
+        FieldAccessor [
+          Variable [ Name=$x ]
+          Field=int16Field
+        ]
+        ]
+        FROM [          FunctionCall asterix.dataset@1[
+            LiteralExpr [STRING] [test.Numeric]
+          ]
+          AS Variable [ Name=$x ]
+        ]
+      )
+    ]
+  )
+]

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.1.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.1.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.1.ast
new file mode 100644
index 0000000..e69de29

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/2a42da45/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.3.ast
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.3.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.3.ast
new file mode 100644
index 0000000..d7dd2a2
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/aggregate-sql/var_int32/var_int32.3.ast
@@ -0,0 +1,60 @@
+DataverseUse test
+Query:
+RecordConstructor [
+  (
+    LiteralExpr [STRING] [var]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+  (
+    LiteralExpr [STRING] [var_pop]
+    :
+    (
+      SELECT ELEMENT [
+      FunctionCall asterix.sql-var_pop@1[
+        (
+          SELECT ELEMENT [
+          Variable [ Name=$x ]
+          ]
+          FROM [            OrderedListConstructor [
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [1]
+              ]
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [2]
+              ]
+              FunctionCall test.int32@1[
+                LiteralExpr [STRING] [3]
+              ]
+            ]
+            AS Variable [ Name=$x ]
+          ]
+        )
+      ]
+      ]
+    )
+  )
+]

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