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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/02/08 14:34:20 UTC
[jira] [Updated] (TAJO-126) Improve LogicalPlanner and
LogicalOptimizer to support sclar subqueries
[ https://issues.apache.org/jira/browse/TAJO-126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyunsik Choi updated TAJO-126:
------------------------------
Fix Version/s: (was: 0.8-incubating)
1.0-incubating
> Improve LogicalPlanner and LogicalOptimizer to support sclar subqueries
> -----------------------------------------------------------------------
>
> Key: TAJO-126
> URL: https://issues.apache.org/jira/browse/TAJO-126
> Project: Tajo
> Issue Type: Improvement
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Fix For: 1.0-incubating
>
>
> The current logical planner and logical optimizer cannot support scalar subquery as follows:
> {code}
> SELECT col1, col2, col3 from tb1 where col1 < (select col3 from tb2);
> {code}
> We need to improve LogicalPlanner and LogicalOptimizer to support sclar subqueries.
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