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https://issues.apache.org/jira/browse/SPARK-54377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-54377.
---------------------------------
    Fix Version/s: 4.1.0
       Resolution: Fixed

Issue resolved by pull request 53091
[https://github.com/apache/spark/pull/53091]

> COMMENT ON TABLE with NULL does not remove table comment
> --------------------------------------------------------
>
>                 Key: SPARK-54377
>                 URL: https://issues.apache.org/jira/browse/SPARK-54377
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 4.0.1
>            Reporter: Ganesha S
>            Assignee: Ganesha S
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.1.0
>
>
> When executing {_}COMMENT ON TABLE table_name IS NULL{_}, the command is 
> expected to remove the table comment. However, the current implementation 
> sets the comment property to null instead of removing the property entirely 
> from the table metadata. 



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