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commit 8f21c056e205b5479d95302387c0f6e522d403bf
Author: Dmitry Lychagin <[email protected]>
AuthorDate: Tue May 25 10:43:01 2021 -0700

    [ASTERIXDB-2905] Error when window function used in subquery
    
    - user model changes: no
    - storage format changes: no
    - interface changes: no
    
    Details:
    - Fix ambiguous alias failure when window function
      is used by subquery
    - Add testcase
    
    Change-Id: I4011af7e46042b9cb0279d0f182deede8bc178cf
    Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/11624
    Integration-Tests: Jenkins <[email protected]>
    Tested-by: Jenkins <[email protected]>
    Reviewed-by: Dmitry Lychagin <[email protected]>
---
 .../window/misc_01/misc_01.10.query.sqlpp          | 34 +++++++++++++++
 .../results/window/misc_01/misc_01.10.adm          |  4 ++
 .../window/misc_01/misc_01.10.ast                  | 50 ++++++++++++++++++++++
 .../SqlppWindowAggregationSugarVisitor.java        |  7 ++-
 4 files changed, 93 insertions(+), 2 deletions(-)

diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/window/misc_01/misc_01.10.query.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/window/misc_01/misc_01.10.query.sqlpp
new file mode 100644
index 0000000..57545a6
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/window/misc_01/misc_01.10.query.sqlpp
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Description  : Test multiple window functions in the same statement
+ * Expected Res : SUCCESS
+ */
+
+use test;
+
+select c2,
+  (
+    select nth_value(c2, 3)
+      over (partition by one order by c2 range between unbounded preceding and 
unbounded following)
+      as nth
+    from t1 x
+  ) as q1
+from t1 y
+order by c2;
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results/window/misc_01/misc_01.10.adm
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/window/misc_01/misc_01.10.adm
new file mode 100644
index 0000000..8e98bdc
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/window/misc_01/misc_01.10.adm
@@ -0,0 +1,4 @@
+{ "q1": [ { "nth": 3 }, { "nth": 3 }, { "nth": 3 }, { "nth": 3 } ], "c2": 1 }
+{ "q1": [ { "nth": 3 }, { "nth": 3 }, { "nth": 3 }, { "nth": 3 } ], "c2": 2 }
+{ "q1": [ { "nth": 3 }, { "nth": 3 }, { "nth": 3 }, { "nth": 3 } ], "c2": 3 }
+{ "q1": [ { "nth": 3 }, { "nth": 3 }, { "nth": 3 }, { "nth": 3 } ], "c2": 4 }
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/window/misc_01/misc_01.10.ast
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/window/misc_01/misc_01.10.ast
new file mode 100644
index 0000000..368f261
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results_parser_sqlpp/window/misc_01/misc_01.10.ast
@@ -0,0 +1,50 @@
+DataverseUse test
+Query:
+SELECT [
+FieldAccessor [
+  Variable [ Name=$y ]
+  Field=c2
+]
+c2
+(
+  SELECT [
+  WINDOW test.nth_value@2[
+    Variable [ Name=$c2 ]
+    LiteralExpr [LONG] [3]
+  ]
+  OVER (
+    PARTITION BY
+      FieldAccessor [
+        Variable [ Name=$x ]
+        Field=one
+      ]
+    ORDER BY
+      FieldAccessor [
+        Variable [ Name=$x ]
+        Field=c2
+      ]
+      ASC
+    range between unbounded preceding and unbounded following exclude no others
+  )
+  nth
+  ]
+  FROM [    FunctionCall asterix.dataset@1[
+      LiteralExpr [STRING] [test.t1]
+    ]
+    AS Variable [ Name=$x ]
+  ]
+)
+q1
+]
+FROM [  FunctionCall asterix.dataset@1[
+    LiteralExpr [STRING] [test.t1]
+  ]
+  AS Variable [ Name=$y ]
+]
+Orderby
+  FieldAccessor [
+    Variable [ Name=$y ]
+    Field=c2
+  ]
+  ASC
+
diff --git 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/visitor/SqlppWindowAggregationSugarVisitor.java
 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/visitor/SqlppWindowAggregationSugarVisitor.java
index a5f43b6..bed2fed 100644
--- 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/visitor/SqlppWindowAggregationSugarVisitor.java
+++ 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/visitor/SqlppWindowAggregationSugarVisitor.java
@@ -105,8 +105,11 @@ public class SqlppWindowAggregationSugarVisitor extends 
AbstractSqlppExpressionS
         Map<VariableExpr, Set<? extends Scope.SymbolAnnotation>> 
liveAnnotatedVars =
                 scopeChecker.getCurrentScope().getLiveVariables();
         Set<VariableExpr> liveVars = liveAnnotatedVars.keySet();
-        Set<VariableExpr> liveContextVars = 
Scope.findVariablesAnnotatedBy(liveVars,
-                SqlppVariableAnnotation.CONTEXT_VARIABLE, liveAnnotatedVars, 
winExpr.getSourceLocation());
+
+        Map<VariableExpr, Set<? extends Scope.SymbolAnnotation>> 
localAnnotatedVars =
+                
scopeChecker.getCurrentScope().getLiveVariables(scopeChecker.getPrecedingScope());
+        Set<VariableExpr> liveContextVars = 
Scope.findVariablesAnnotatedBy(localAnnotatedVars.keySet(),
+                SqlppVariableAnnotation.CONTEXT_VARIABLE, localAnnotatedVars, 
winExpr.getSourceLocation());
 
         List<Pair<Expression, Identifier>> winFieldList = 
winExpr.getWindowFieldList();
         Map<VariableExpr, Identifier> winVarFieldMap =

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