duan xiong created CALCITE-4805:
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Summary: When IN sub-query valueList contains Null literal, can't
be converted to OR.
Key: CALCITE-4805
URL: https://issues.apache.org/jira/browse/CALCITE-4805
Project: Calcite
Issue Type: Bug
Reporter: duan xiong
Assignee: duan xiong
for example:
{code:java}
select * from emp where deptno in (null,2){code}
Now the RelNode is:
{code:java}
LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
LogicalJoin(condition=[=($7, $9)], joinType=[inner])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
LogicalAggregate(group=[{0}])
LogicalValues(tuples=[[{ null }, { 2 }]]){code}
The RelNode should be:
{code:java}
LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
LogicalFilter(condition=[OR(=($7, null), =($7, 2))])
LogicalTableScan(table=[[CATALOG, SALES, EMP]]){code}
So I think when the sub-query value list size is under the
threshold(IN_SUB_QUERY_THRESHOLD), they can be converted to OR(no matter have
the NullLiteral or not).
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