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https://issues.apache.org/jira/browse/SPARK-47821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-47821.
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Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 46011
[https://github.com/apache/spark/pull/46011]
> Add is_variant_null expression
> ------------------------------
>
> Key: SPARK-47821
> URL: https://issues.apache.org/jira/browse/SPARK-47821
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Richard Chen
> Assignee: Richard Chen
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
>
> adds a `is_variant_null` expression, which returns whether a given variant
> value represents a variant null (note the difference between a variant null
> and an engine null)
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