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https://issues.apache.org/jira/browse/CALCITE-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhen Chen resolved CALCITE-7071.
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Resolution: Fixed
> Add test for replacing JOIN node with its child node when JOIN condition is
> false
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-7071
> URL: https://issues.apache.org/jira/browse/CALCITE-7071
> Project: Calcite
> Issue Type: Test
> Reporter: Zhen Chen
> Assignee: Zhen Chen
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.41.0
>
>
> The existing rule combination can already meet this scenario. Now it is
> modified to add two test cases to show that the combination of
> CoreRules.JOIN_CONDITION_PUSH + PruneEmptyRules.JOIN_[LEFT/RIGHT]_INSTANCE
> can eliminate LEFT/RIGHT JOIN when the Join condition is false.
> The above is an example of a left join.
> SQL
> {code:java}
> SELECT e.deptno
> FROM sales.emp e
> LEFT JOIN sales.dept d ON e.deptno = d.deptno and e.deptno between 3 and 1
> {code}
> Plan Before
> {code:java}
> LogicalProject(DEPTNO=[$7])
> LogicalJoin(condition=[false], joinType=[left])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalTableScan(table=[[CATALOG, SALES, DEPT]])
> {code}
> Plan After
> {code:java}
> LogicalProject(DEPTNO=[$7])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
> SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], DEPTNO0=[null:INTEGER],
> NAME=[null:VARCHAR(10)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> {code}
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