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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10901) Optimize multi column distinct queries
Date Thu, 17 Nov 2016 00:44:58 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15672237#comment-15672237
] 

Pengcheng Xiong commented on HIVE-10901:
----------------------------------------

[~ashutoshc], could u take a look? Thanks.

> Optimize  multi column distinct queries 
> ----------------------------------------
>
>                 Key: HIVE-10901
>                 URL: https://issues.apache.org/jira/browse/HIVE-10901
>             Project: Hive
>          Issue Type: New Feature
>          Components: CBO, Logical Optimizer
>    Affects Versions: 1.2.0
>            Reporter: Mostafa Mokhtar
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-10901.02.patch, HIVE-10901.03.patch, HIVE-10901.04.patch, HIVE-10901.patch
>
>
> HIVE-10568 is useful only when there is a distinct on one column. It can be expanded
for multiple column cases too.



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