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https://issues.apache.org/jira/browse/SPARK-34565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17292250#comment-17292250
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Apache Spark commented on SPARK-34565:
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User 'tanelk' has created a pull request for this issue:
https://github.com/apache/spark/pull/31677
> Collapse Window nodes with Project between them
> -----------------------------------------------
>
> Key: SPARK-34565
> URL: https://issues.apache.org/jira/browse/SPARK-34565
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Tanel Kiis
> Priority: Major
>
> The CollapseWindow optimizer rule can be imroved to also collapse Window
> nodes, that have a Project between them. This sort of Window - Project -
> Window chains will happen when chaining the dataframe.withColumn calls.
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