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https://issues.apache.org/jira/browse/TAJO-568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887776#comment-13887776
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Hyunsik Choi commented on TAJO-568:
-----------------------------------
Created a review request against branch master in reviewboard
https://reviews.apache.org/r/17589/
> Union query with the same alias names cause NPE
> -----------------------------------------------
>
> Key: TAJO-568
> URL: https://issues.apache.org/jira/browse/TAJO-568
> Project: Tajo
> Issue Type: Bug
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.8-incubating
>
> Attachments: TAJO-568.patch
>
>
> See the title and the following case:
> {code}
> select a.id, a.name from (select id, name from table1) a
> union all
> select a.id, a.name from (select id, name from table1) a
> {code}
> We should fix it.
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