Github user dongjoon-hyun commented on a diff in the pull request: https://github.com/apache/spark/pull/13876#discussion_r68328083 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala --- @@ -793,6 +794,20 @@ object ConstantFolding extends Rule[LogicalPlan] { } /** + * Removes literal repetitions from IN predicate + */ +object RemoveLiteralRepetitionFromIn extends Rule[LogicalPlan] { --- End diff -- Thank you for review, @rxin . 1. Sure, I can merge this into OptimizeIn. 2. Also, it can be used for deterministic expressions. I'm just here focus on literals. May I handle both cases?
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