Vineet Garg created CALCITE-1726:
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Summary: 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: Julian Hyde
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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