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https://issues.apache.org/jira/browse/HIVE-11822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14745453#comment-14745453
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Gopal V commented on HIVE-11822:
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[~tasanuma0829]: assigned.
You can follow the codepath of VectorCoalesce and guide yourself to the
implementation of NVL.
I also think adding test-cases would be good. VectorCoalesce (& NVL) might need
some test-coverage with COALESCE(a, b), where both columns are null.
> vectorize NVL UDF
> -----------------
>
> Key: HIVE-11822
> URL: https://issues.apache.org/jira/browse/HIVE-11822
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Takanobu Asanuma
>
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