fapaul commented on code in PR #27742:
URL: https://github.com/apache/flink/pull/27742#discussion_r2895222246
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flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/plan/rules/FlinkStreamRuleSets.scala:
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@@ -193,7 +193,11 @@ object FlinkStreamRuleSets {
PruneEmptyRules.SORT_INSTANCE,
PruneEmptyRules.AGGREGATE_INSTANCE,
PruneEmptyRules.JOIN_LEFT_INSTANCE,
- PruneEmptyRules.JOIN_RIGHT_INSTANCE
+ PruneEmptyRules.JOIN_RIGHT_INSTANCE,
+ // Replaces global Aggregate over empty Values with default literal values
+ // (e.g. COUNT(*)=0). Handles the plan-time case where the planner can
+ // statically determine the input is empty.
+ CoreRules.AGGREGATE_VALUES
Review Comment:
I updated the PR with the batch tests
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