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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14861) Support precedence for set operator using parentheses
Date Sun, 09 Oct 2016 04:27:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15559249#comment-15559249
] 

Lefty Leverenz commented on HIVE-14861:
---------------------------------------

Okay, I added a TODOC2.2 label but I'm not sure where this should be documented.

All the examples are selects, so maybe it belongs here:

* [Language Manual -- Select | https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Select]

> Support precedence for set operator using parentheses
> -----------------------------------------------------
>
>                 Key: HIVE-14861
>                 URL: https://issues.apache.org/jira/browse/HIVE-14861
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 2.1.0
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>              Labels: TODOC2.2
>             Fix For: 2.2.0
>
>         Attachments: HIVE-14861.01.patch, HIVE-14861.02.patch
>
>
> We should support precedence for set operator by using parentheses. For example
> {code}
> select * from src union all (select * from src union select * from src);
> {code}



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