[jira] [Created] (CALCITE-4805) When IN sub-query valueList contains Null literal, can't be converted to OR.

["duan xiong (Jira)" <ji...@apache.org>]

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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