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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3426) union with same source should be optimized
Date Sun, 30 Sep 2012 18:32:07 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13466544#comment-13466544
] 

Namit Jain commented on HIVE-3426:
----------------------------------

Yes, but what about the case when there is an group by in the sub-query ?
                
> union with same source should be optimized
> ------------------------------------------
>
>                 Key: HIVE-3426
>                 URL: https://issues.apache.org/jira/browse/HIVE-3426
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Zhenxiao Luo
>


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