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https://issues.apache.org/jira/browse/SPARK-28052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-28052.
-----------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 24873
[https://github.com/apache/spark/pull/24873]
> ArrayExists should follow the three-valued boolean logic.
> ---------------------------------------------------------
>
> Key: SPARK-28052
> URL: https://issues.apache.org/jira/browse/SPARK-28052
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.3
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Priority: Major
> Fix For: 3.0.0
>
>
> Currently {{ArrayExists}} always returns boolean values (if the arguments are
> not null), but it should follow the three-valued boolean logic:
> - {{true}} if the predicate holds at least one {{true}}
> - otherwise, {{null}} if the predicate holds {{null}}
> - otherwise, {{false}}
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