Ali Mansour created CALCITE-5247:
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Summary: FilterJoinRule not simplifying a case that can be
simplified
Key: CALCITE-5247
URL: https://issues.apache.org/jira/browse/CALCITE-5247
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.31.0, 1.25.0
Reporter: Ali Mansour
In this specific case:
Table A
Table B
FILTER(OR (IS NOT NULL(B.C0), IS NOT NULL(B.C1)))
A LEFT JOIN B
->
A INNER JOIN B
The FilterJoinRule fails to simplify this specific case, however if we have
only 1 IS_NOT_NULL in the filter condition, it is able to do so.
I think the problem is in the Strong class.
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