[ https://issues.apache.org/jira/browse/CALCITE-5568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17721310#comment-17721310 ]
Benchao Li commented on CALCITE-5568: ------------------------------------- [~leepb] Now it looks like that we have reached an agreement that this is a problem and we can improve it, could you complete your PR, and then we can proceed to review? > Decorrelate will fail. If the RelNode tree has LogicalValues > ------------------------------------------------------------ > > Key: CALCITE-5568 > URL: https://issues.apache.org/jira/browse/CALCITE-5568 > Project: Calcite > Issue Type: Bug > Reporter: libopeng > Priority: Major > Labels: pull-request-available > Time Spent: 20m > Remaining Estimate: 0h > > Decorrelate will fail. If the RelNode tree has LogicalValues > case: > {code:java} > SELECT * > FROM emp AS e > CROSS JOIN (VALUES 1) AS t (x) > WHERE EXISTS (SELECT * FROM dept WHERE deptno = e.deptno){code} > after decorrelate > (org.apache.calcite.sql2rel.RelDecorrelator#decorrelateQuery(org.apache.calcite.rel.RelNode, > org.apache.calcite.tools.RelBuilder)) > {code:java} > LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4], > SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], X=[$9]) > LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4], > SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], X=[$9], $f0=[$10]) > LogicalFilter(condition=[IS NOT NULL($10)]) > LogicalCorrelate(correlation=[$cor0], joinType=[left], > requiredColumns=[{7}]) > LogicalJoin(condition=[true], joinType=[inner]) > LogicalTableScan(table=[[CATALOG, SALES, EMP]]) > LogicalValues(tuples=[[{ 1 }]]) > LogicalAggregate(group=[{}], agg#0=[MIN($0)]) > LogicalProject($f0=[true]) > LogicalFilter(condition=[=($0, $cor0.DEPTNO)]) > LogicalTableScan(table=[[CATALOG, SALES, DEPT]]) > {code} > LogicalCorrelate will not be processed when the RelNode tree has > LogicalValues > [https://github.com/apache/calcite/blob/main/core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java#L491] > > Is this as expected? > > > > -- This message was sent by Atlassian Jira (v8.20.10#820010)