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https://issues.apache.org/jira/browse/SPARK-31240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro resolved SPARK-31240.
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    Resolution: Duplicate

> Constant fold deterministic Scala UDFs with foldable arguments
> --------------------------------------------------------------
>
>                 Key: SPARK-31240
>                 URL: https://issues.apache.org/jira/browse/SPARK-31240
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Kris Mok
>            Priority: Major
>
> Constant fold deterministic Scala UDFs with foldable arguments, 
> conservatively.
> ScalaUDFs that meet all following criteria are subject to constant folding in 
> this feature:
> * deterministic
> * all arguments are foldable
> * does not throw an exception when evaluating the UDF for constant folding



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