constzhou commented on code in PR #35334:
URL: https://github.com/apache/spark/pull/35334#discussion_r937314811
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala:
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@@ -1148,9 +1148,9 @@ object CollapseWindow extends Rule[LogicalPlan] {
*/
object TransposeWindow extends Rule[LogicalPlan] {
private def compatiblePartitions(ps1 : Seq[Expression], ps2:
Seq[Expression]): Boolean = {
- ps1.length < ps2.length &&
ps2.take(ps1.length).permutations.exists(ps1.zip(_).forall {
Review Comment:
You mean we should only optimize the performance without changing the
logic？Maybe we could find a way to avoid the permutation
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