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https://issues.apache.org/jira/browse/PHOENIX-1580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14321191#comment-14321191
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James Taylor commented on PHOENIX-1580:
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ConcatResultIterator is not low level and will work fine. No need to implement
your own iterator. Just use the LookAheadResultIterator.wrap on each iterator.
Look for examples in code and follow Maryann's advice.
I'll do some research on the spec regarding order by and limit with union,
though they'd work fine. [~julianhyde] - any advice for us here?
> 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: unionall-wipe.patch
>
>
> Select * from T1
> UNION ALL
> Select * from T2
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