Zhen Chen created CALCITE-6948:
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Summary: 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
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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