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https://issues.apache.org/jira/browse/CALCITE-4889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17449462#comment-17449462
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Jing Zhang commented on CALCITE-4889:
-------------------------------------
[~vladimirsitnikov],
I try reproduce this problem by adding this sql in `RelOptRulesTest` and
`SqlToRelConverterTest`, but it's original RelNode tree is as following:
{code:java}
LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
LogicalFilter(condition=[NOT(OR(AND(=($0, 7369), =($7, 20)), AND(=($0, 7499),
=($7, 30))))])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
{code}
Would you please share how to reproduce this problem? Do I need apply some
rules?
> Double join is created for NOT IN
> ---------------------------------
>
> Key: CALCITE-4889
> URL: https://issues.apache.org/jira/browse/CALCITE-4889
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.28.0
> Reporter: Vladimir Sitnikov
> Priority: Major
>
> The following queries yield several joins in the plan.
> I think double joins are excessive here, especially for the first case where
> all the values are non-nullable.
> {code}select * from "scott".emp where (empno, deptno) not in ((7369, 20),
> (7499, 30));{code}
> {noformat}
> select * from "scott".emp where empno not in (null, 7782);
> EnumerableCalc(expr#0..12=[{inputs}], expr#13=[0:BIGINT], expr#14=[=($t8,
> $t13)], expr#15=[IS NULL($t12)], expr#16=[>=($t9, $t8)], expr#17=[AND($t15,
> $t16)], expr#18=[OR($t14, $t17)], proj#0..7=[{exprs}], $condition=[$t18])
> EnumerableMergeJoin(condition=[=($10, $11)], joinType=[left])
> EnumerableSort(sort0=[$10], dir0=[ASC])
> EnumerableCalc(expr#0..9=[{inputs}], proj#0..9=[{exprs}], EMPNO0=[$t0])
> EnumerableNestedLoopJoin(condition=[true], joinType=[inner])
> EnumerableTableScan(table=[[scott, EMP]])
> EnumerableAggregate(group=[{}], agg#0=[COUNT()], agg#1=[COUNT($0)])
> EnumerableValues(tuples=[[{ null }, { 7782 }]])
> EnumerableSort(sort0=[$0], dir0=[ASC])
> EnumerableCalc(expr#0=[{inputs}], expr#1=[true], proj#0..1=[{exprs}])
> EnumerableValues(tuples=[[{ null }, { 7782 }]])
> {noformat}
> {noformat}
> select * from "scott".emp where (empno, deptno) not in ((1, 2), (3, null));
> EnumerableCalc(expr#0..14=[{inputs}], expr#15=[0:BIGINT], expr#16=[=($t8,
> $t15)], expr#17=[IS NULL($t14)], expr#18=[>=($t9, $t8)], expr#19=[IS NOT
> NULL($t11)], expr#20=[AND($t17, $t18, $t19)], expr#21=[OR($t16, $t20)],
> proj#0..7=[{exprs}], $condition=[$t21])
> EnumerableMergeJoin(condition=[AND(=($10, $12), =($11, $13))],
> joinType=[left])
> EnumerableSort(sort0=[$10], sort1=[$11], dir0=[ASC], dir1=[ASC])
> EnumerableCalc(expr#0..9=[{inputs}], proj#0..9=[{exprs}], EMPNO0=[$t0],
> DEPTNO0=[$t7])
> EnumerableNestedLoopJoin(condition=[true], joinType=[inner])
> EnumerableTableScan(table=[[scott, EMP]])
> EnumerableAggregate(group=[{}], agg#0=[COUNT()], agg#1=[COUNT($0,
> $1)])
> EnumerableValues(tuples=[[{ 1, 2 }, { 3, null }]])
> EnumerableSort(sort0=[$0], sort1=[$1], dir0=[ASC], dir1=[ASC])
> EnumerableCalc(expr#0..1=[{inputs}], expr#2=[true], proj#0..2=[{exprs}])
> EnumerableValues(tuples=[[{ 1, 2 }, { 3, null }]])
> {noformat}
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