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https://issues.apache.org/jira/browse/HIVE-14861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15553848#comment-15553848
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Ashutosh Chauhan commented on HIVE-14861:
-----------------------------------------
+1
> 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
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> 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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