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