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Posted to issues@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2018/11/22 09:35:00 UTC

[jira] [Updated] (HIVE-20961) Retire NVL implementation

     [ https://issues.apache.org/jira/browse/HIVE-20961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich updated HIVE-20961:
------------------------------------
    Description: 
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.

  was: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.


> Retire NVL implementation
> -------------------------
>
>                 Key: HIVE-20961
>                 URL: https://issues.apache.org/jira/browse/HIVE-20961
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Priority: Major
>
> 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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