libopeng created CALCITE-5880: --------------------------------- Summary: When the association condition of the association subquery is 'is not distinct from', the join condition becomes '=' after decorrelation. Key: CALCITE-5880 URL: https://issues.apache.org/jira/browse/CALCITE-5880 Project: Calcite Issue Type: Bug Reporter: libopeng
{code:java} select EMPNO from emp where EXISTS (select DEPTNO from dept where emp.EMPNO is not DISTINCT from dept.DEPTNO){code} before decorrelation {code:java} LogicalProject(EMPNO=[$0]) LogicalFilter(condition=[IS NOT NULL($9)]) LogicalCorrelate(correlation=[$cor0], joinType=[left], requiredColumns=[{0}]) LogicalTableScan(table=[[CATALOG, SALES, EMP]]) LogicalAggregate(group=[{}], agg#0=[MIN($0)]) LogicalProject($f0=[true]) LogicalFilter(condition=[OR(AND(IS NULL($cor0.EMPNO), IS NULL($0)), IS TRUE(=($cor0.EMPNO, $0)))]) <--- here is 't1.x is not distinct from t2.x' LogicalTableScan(table=[[CATALOG, SALES, DEPT]]) {code} after decorrelation {code:java} LogicalProject(EMPNO=[$0]) LogicalFilter(condition=[IS NOT NULL($9)]) LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], $f0=[$13]) LogicalJoin(condition=[AND(=($0, $11), =($9, $12))], joinType=[left]) <---here is 't1.x=t2.x and (t1.x is null = t2.x is null)' LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], $f9=[false], EMPNO0=[$0]) LogicalTableScan(table=[[CATALOG, SALES, EMP]]) LogicalAggregate(group=[{0, 1}], agg#0=[MIN($2)]) LogicalProject(EMPNO=[$2], $f9=[$3], $f0=[true]) LogicalJoin(condition=[=($2, $0)], joinType=[inner]) LogicalTableScan(table=[[CATALOG, SALES, DEPT]]) LogicalProject(EMPNO=[$0], $f9=[false]) LogicalTableScan(table=[[CATALOG, SALES, EMP]]) {code} {code:java} EMP | DEPT +---------+ | +---------+ | EMPNO | | | DEPTNO | +---------+ | +---------+ | null | | | null | {code} expect result {code:java} EMPNO +-------+ | null | +-------+{code} actual result {code:java} EMPNO +-------+ +-------+ {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)