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https://issues.apache.org/jira/browse/HIVE-20961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Laszlo Bodor updated HIVE-20961:
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Attachment: HIVE-20961.03.patch
> Retire NVL implementation
> -------------------------
>
> Key: HIVE-20961
> URL: https://issues.apache.org/jira/browse/HIVE-20961
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Laszlo Bodor
> Priority: Major
> Attachments: HIVE-20961.01.patch, HIVE-20961.02.patch,
> HIVE-20961.03.patch
>
>
> Right now we have coalesce and nvl implemented separetly; it might be better
> to remove one of them as they are doing the same. Because Coalesce is in the
> standard - I think NVL have to go...and became an alias to Coalesce.
> Further benefit is: that optimizations which coalesce already recieves; will
> be done on NVL calls as well.
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