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https://issues.apache.org/jira/browse/TAJO-891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14051452#comment-14051452
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ASF GitHub Bot commented on TAJO-891:
-------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/tajo/pull/49
> Complex join conditions with UNION or inline should be supported
> ----------------------------------------------------------------
>
> Key: TAJO-891
> URL: https://issues.apache.org/jira/browse/TAJO-891
> Project: Tajo
> Issue Type: Bug
> Components: distributed query plan, planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.9.0
>
>
> Please see the following two example queries. Currently, they will cause
> planning exception. This patch fixes the bugs.
> {code}
> select
> n1.n_nationkey,
> substr(n1.n_name, 1, 4) name1,
> substr(n2.n_name, 1, 4) name2
> from nation n1 join (select * from nation) n2 on substr(n1.n_name, 1, 4) =
> substr(n2.n_name, 1, 4)
> order by n1.n_nationkey;
> {code}
> {code}
> select
> n1.n_nationkey,
> substr(n1.n_name, 1, 4) name1,
> substr(n2.n_name, 1, 4) name2
> from nation n1 join (select * from nation union select * from nation) n2 on
> substr(n1.n_name, 1, 4) = substr(n2.n_name, 1, 4)
> order by n1.n_nationkey;
> {code}
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