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https://issues.apache.org/jira/browse/SPARK-52345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-52345.
---------------------------------
Fix Version/s: 4.1.0
4.0.1
Resolution: Fixed
Issue resolved by pull request 51047
[https://github.com/apache/spark/pull/51047]
> Fix NULL behavior in scripting conditions
> -----------------------------------------
>
> Key: SPARK-52345
> URL: https://issues.apache.org/jira/browse/SPARK-52345
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core, SQL
> Affects Versions: 4.0.0, 4.1.0
> Reporter: David Milicevic
> Assignee: David Milicevic
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0, 4.0.1
>
>
> {{`NULL`}} is a valid Boolean "value" in SQL. Scripting engine is not
> properly handling cases when conditions (in if-else, case, while, repeat
> statements) returned {{{}NULL{}}}.
> Scripting engine throws an exception in such cases, stating that the {{NULL}}
> is an invalid value.
> Scripting engine should consider such {{NULLs}} as a {{False}} Boolean value.
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