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https://issues.apache.org/jira/browse/SPARK-33337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-33337:
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Assignee: Apache Spark (was: L. C. Hsieh)
> Support subexpression elimination in branches of conditional expressions
> ------------------------------------------------------------------------
>
> Key: SPARK-33337
> URL: https://issues.apache.org/jira/browse/SPARK-33337
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: L. C. Hsieh
> Assignee: Apache Spark
> Priority: Major
>
> Currently we skip subexpression elimination in branches of conditional
> expressions including {{If}}, {{CaseWhen}}, and {{Coalesce}}. Actually we can
> do subexpression elimination for such branches if the subexpression is common
> across all branches.
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