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https://issues.apache.org/jira/browse/SPARK-42504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17691354#comment-17691354
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Apache Spark commented on SPARK-42504:
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User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/40098
> NestedColumnAliasing support pruning adjacent projects
> ------------------------------------------------------
>
> Key: SPARK-42504
> URL: https://issues.apache.org/jira/browse/SPARK-42504
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.5.0
> Reporter: XiDuo You
> Priority: Major
>
> CollapseProject won't combine adjacent projects into one, e.g. non-cheap
> expression has been accessed more than once with the below project. Then
> there would be possible to appear some adjacent project nodes that
> NestedColumnAliasing does not support pruning.
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