Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/7583#discussion_r35370527
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -315,6 +315,12 @@ class Analyzer(
}
)
+ // If we have foldable group expressions, remove them.
+ case a: Aggregate if a.resolved &&
a.groupingExpressions.exists(_.foldable) =>
--- End diff --
Should this be done in the optimizer?
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