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https://issues.apache.org/jira/browse/CALCITE-5675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stamatis Zampetakis resolved CALCITE-5675.
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Fix Version/s: 1.35.0
Resolution: Fixed
Fixed in
[https://github.com/apache/calcite/commit/e5f7729d7d44630fc9c3b06bc326f335089b4b84.]
Thanks for the review [~rubenql] !
> Infer predicates for anti-join
> ------------------------------
>
> Key: CALCITE-5675
> URL: https://issues.apache.org/jira/browse/CALCITE-5675
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.35.0
>
>
> Enhance {{RelMdPredicates}} to be able to infer predicates for anti-joins.
> Consider the following plans with an anti join between EMP and DEPT tables.
> +PulledUpPredicates+
> {noformat}
> LogicalJoin(condition=[=($7, $8)], joinType=[anti])
> LogicalFilter(condition=[=($1, 'Victor')])
> LogicalTableScan(table=[[scott, EMP]])
> LogicalFilter(condition=[=($1, 'CSD')])
> LogicalTableScan(table=[[scott, DEPT]])
> {noformat}
> We can infer that the {{>($1, 'Victor')}} predicate holds on the result of
> the join.
> +RightInferredPredicates+
> {noformat}
> LogicalJoin(condition=[=($7, $8)], joinType=[anti])
> LogicalFilter(condition=[>($7, 10)])
> LogicalTableScan(table=[[scott, EMP]])
> LogicalTableScan(table=[[scott, DEPT]])
> {noformat}
> We can infer that the {{>($0, 10)}} predicate holds on the right relation
> (DEPT).
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