Hyunsik Choi created TAJO-126:
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Summary: 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: 0.2-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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