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https://issues.apache.org/jira/browse/HIVE-13486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236289#comment-15236289
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Ashutosh Chauhan commented on HIVE-13486:
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+1 pending tests
> Cast the column type for column masking
> ---------------------------------------
>
> Key: HIVE-13486
> URL: https://issues.apache.org/jira/browse/HIVE-13486
> Project: Hive
> Issue Type: Sub-task
> Components: Security
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Fix For: 2.1.0
>
> Attachments: HIVE-13486.01.patch
>
>
> Quoted from [~jdere] "in the case that getCellValueTransformer() returns a
> constant value (such as "NULL" to indicate the expression should be null),
> the resulting data type for that column ends up becoming the constant value
> NULL, which is different from the original column's type. Might want to add a
> type check somewhere to make sure the transformed expression and original
> expression match, or maybe wrap the transformed expression within a CAST to
> get the types to match."
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