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https://issues.apache.org/jira/browse/CALCITE-5247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benchao Li updated CALCITE-5247:
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Summary: FilterJoinRule cannot simplify left join to inner join for `WHERE
RHS.C1 IS NOT NULL OR RHS.C2 IS NOT NULL` (was: FilterJoinRule not simplifying
a case that can be simplified)
> FilterJoinRule cannot simplify left join to inner join for `WHERE RHS.C1 IS
> NOT NULL OR RHS.C2 IS NOT NULL`
> -----------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-5247
> URL: https://issues.apache.org/jira/browse/CALCITE-5247
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.25.0, 1.31.0
> Reporter: Ali Mansour
> Priority: Major
>
> 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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