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https://issues.apache.org/jira/browse/CALCITE-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez reassigned CALCITE-1726:
------------------------------------------------
Assignee: Vineet Garg (was: Julian Hyde)
> Subquery in FILTER is left untransformed
> -----------------------------------------
>
> Key: CALCITE-1726
> URL: https://issues.apache.org/jira/browse/CALCITE-1726
> Project: Calcite
> Issue Type: Bug
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
> Labels: pull-request-available, sub-query
> Fix For: 1.19.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Reproducer
> Query:
> {code:SQL}
> select * from emp
> where empno IN (select (select max(sal) from emp) from dept)
> {code}
> Plan after {{SubqueryRemoveRule}}
> {code:SQL}
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
> SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
> SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalJoin(condition=[=($0, $9)], joinType=[inner])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalAggregate(group=[{0}])
> LogicalProject(EXPR$0=[$SCALAR_QUERY({
> LogicalAggregate(group=[{}], EXPR$0=[MAX($0)])
> LogicalProject(SAL=[$5])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> })])
> LogicalTableScan(table=[[CATALOG, SALES, DEPT]])
> {code}
> As you can notice scalar query in LogicalProject is left as it is
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