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https://issues.apache.org/jira/browse/SPARK-33092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro resolved SPARK-33092.
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Fix Version/s: 3.1.0
Resolution: Fixed
Resolved by https://github.com/apache/spark/pull/29975
> Support subexpression elimination in ProjectExec
> ------------------------------------------------
>
> Key: SPARK-33092
> URL: https://issues.apache.org/jira/browse/SPARK-33092
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
> Fix For: 3.1.0
>
>
> Users frequently write repeatedly expression in projection. Currently in
> ProjectExec, we don't support subexpression elimination in Whole-stage
> codegen. We can support it to reduce redundant evaluation.
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