[GitHub] [calcite] mihaibudiu commented on a diff in pull request #3430: [CALCITE-6008] ARRAY_AGG should returns ARRAY NULL when there's no input rows

[via GitHub]

mihaibudiu commented on code in PR #3430:
URL: https://github.com/apache/calcite/pull/3430#discussion_r1327999598


##########
testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
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@@ -9314,11 +9314,12 @@ private static void 
checkGroupConcatFuncFails(SqlOperatorFixture t) {
   }
 
   private static void checkArrayAggFunc(SqlOperatorFixture f) {
-    f.setFor(SqlLibraryOperators.ARRAY_CONCAT_AGG, VM_FENNEL, VM_JAVA);
+    f.setFor(SqlLibraryOperators.ARRAY_AGG, VM_FENNEL, VM_JAVA);

Review Comment:
   The optimization will replace the plan with a query returning constant null.



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