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https://issues.apache.org/jira/browse/SPARK-52186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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KeKe Zhu updated SPARK-52186:
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Affects Version/s: 3.5.0
3.4.0
(was: 3.5.4)
(was: 3.5.5)
> An Optimization for EXISTS Subquery
> -----------------------------------
>
> Key: SPARK-52186
> URL: https://issues.apache.org/jira/browse/SPARK-52186
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0, 3.5.0, 4.0.0
> Reporter: KeKe Zhu
> Priority: Major
>
> Since EXISTS only returns True or False, it doesn't matter what is SELECTED.
> Therefore, an optimization rule can be added to check whether the EXISTS
> clause contains Project 1, If not, add a Project 1 on the EXISTS.
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