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https://issues.apache.org/jira/browse/HIVE-15200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15766453#comment-15766453
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Lefty Leverenz commented on HIVE-15200:
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Does this need to be documented in the wiki?
* [Subqueries |
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+SubQueries]
> Support setOp in subQuery with parentheses
> ------------------------------------------
>
> Key: HIVE-15200
> URL: https://issues.apache.org/jira/browse/HIVE-15200
> Project: Hive
> Issue Type: Sub-task
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-15200.01.patch, HIVE-15200.02.patch,
> HIVE-15200.03.patch
>
>
> {code}
> explain select key from ((select key from src) union (select key from
> src))subq;
> {code}
> will throw
> {code}
> FAILED: ParseException line 1:47 cannot recognize input near 'union' '('
> 'select' in subquery source
> {code}
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