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https://issues.apache.org/jira/browse/PHOENIX-1580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392964#comment-14392964
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James Taylor commented on PHOENIX-1580:
---------------------------------------

No, that change is fine. I made a change to the grammar such that hints may be 
specified in any select now (inside of a union, subquery, derived table, etc), 
instead of just at the top level. We shouldn't have been flagging that as an 
error before, but worst case should have just ignored the hints (which is what 
will happen now).

> Support UNION ALL
> -----------------
>
>                 Key: PHOENIX-1580
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1580
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Alicia Ying Shu
>            Assignee: Alicia Ying Shu
>         Attachments: PHOENIX-1580-grammar.patch, Phoenix-1580-v1.patch, 
> Phoenix-1580-v2.patch, Phoenix-1580-v3.patch, Phoenix-1580-v4.patch, 
> Phoenix-1580-v5.patch, Phoenix-1580-v6.patch, phoenix-1580-v1-wipe.patch, 
> phoenix-1580.patch, unionall-wipe.patch
>
>
> Select * from T1
> UNION ALL
> Select * from T2



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