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https://issues.apache.org/jira/browse/PHOENIX-1580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14391631#comment-14391631
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Alicia Ying Shu commented on PHOENIX-1580:
------------------------------------------

[~maryannxue] After applying your patch, almost all of my tests failed with 
NPE. The NPE was from ParseNodeRewriter.java. So I added the following in 
ParseNodeRewriter.java. Does it look ok?
if (from == null)
            return statement;

I have made all the changes asked by [~jamestaylor]

> 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-v1-wipe.patch, 
> phoenix-1580.patch, unionall-wipe.patch
>
>
> Select * from T1
> UNION ALL
> Select * from T2



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