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https://issues.apache.org/jira/browse/TAJO-126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi reassigned TAJO-126:
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Assignee: Hyunsik Choi
> 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
> Assignee: 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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