wangyum commented on code in PR #34504:
URL: https://github.com/apache/spark/pull/34504#discussion_r949208699
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala:
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@@ -1548,6 +1548,33 @@ object PushPredicateThroughNonJoin extends
Rule[LogicalPlan] with PredicateHelpe
filter
}
+ case filter @ Filter(condition, w: Window) if w.partitionSpec.isEmpty &&
w.orderSpec.nonEmpty =>
Review Comment:
StarRocks has a similar rule:
https://github.com/StarRocks/starrocks/blob/main/fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rule/transformation/PushDownPredicateRankingWindowRule.java
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