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https://issues.apache.org/jira/browse/CALCITE-6948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6948:
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Labels: pull-request-available (was: )
> Implement MinusToAntiJoinRule
> -----------------------------
>
> Key: CALCITE-6948
> URL: https://issues.apache.org/jira/browse/CALCITE-6948
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.39.0
> Reporter: Zhen Chen
> Assignee: Zhen Chen
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.40.0
>
>
> Similar to IntersectToSemiJoinRule, we can implement MinusToAntiJoinRule.
> Like this:
> from:
> {code:java}
> LogicalMinus(all=[false])
> LogicalProject(ENAME=[$1])
> LogicalFilter(condition=[=($7, 10)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalProject(ENAME=[$1])
> LogicalFilter(condition=[=($7, 20)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]]) {code}
> to:
> {code:java}
> LogicalAggregate(group=[{0}])
> LogicalJoin(condition=[IS NOT DISTINCT FROM($0, $1)], joinType=[anti])
> LogicalProject(ENAME=[$1])
> LogicalFilter(condition=[=($7, 10)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalProject(ENAME=[$1])
> LogicalFilter(condition=[=($7, 20)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]]) {code}
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