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Posted to dev@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2013/10/02 03:33:24 UTC

[jira] [Updated] (TAJO-34) Outer Join

     [ https://issues.apache.org/jira/browse/TAJO-34?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated TAJO-34:
-----------------------------

    Assignee: camelia_c  (was: camelia c)

> Outer Join
> ----------
>
>                 Key: TAJO-34
>                 URL: https://issues.apache.org/jira/browse/TAJO-34
>             Project: Tajo
>          Issue Type: New Feature
>            Reporter: Hyunsik Choi
>            Assignee: camelia_c
>              Labels: gsoc, gsoc2013, join, mentor
>
> h3. Background
> The current Tajo does not support outer join. The parser part for outer join was already implemented.
> h3. Proposal
> In this issue, we should improve LogicalPlanner/LogicalOptimizer to deal with outer joins. Then, we should adopt outer join to existing physical join operators like HashJoinExec and MergeJoinExec.



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