[CALCITE-5421] SqlToRelConverter should populate correlateId for join with correlated query in HAVING condition

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: James Starr
• Reporter: James Starr
• Created: 05/Dec/22 23:43
• Updated: 10/Feb/23 21:26

Description

class SqlToRelConverterTest extends SqlToRelTestBase {
  ...
  @Test void testInCorrelatedSubQueryInHavingRex() {
    final String sql = "select sum(sal) as s\n"
        + "from emp e1\n"
        + "group by deptno\n"
        + "having count(*) > 2\n"
        + "and exists(\n"
        + "  select true\n"
        + "  from emp e2\n"
        + "  where e1.deptno = e2.deptno)";
    sql(sql).withExpand(false).ok();
  }

Generates the following plan where the project with a subquery does not have correlate id:

LogicalProject(S=[$1])
  LogicalFilter(condition=[AND(>($2, 2), EXISTS({
LogicalFilter(condition=[=($cor0.DEPTNO, $7)])
  LogicalTableScan(table=[[CATALOG, SALES, EMP]])
}))])
    LogicalAggregate(group=[{0}], S=[SUM($1)], agg#1=[COUNT()])
      LogicalProject(DEPTNO=[$7], SAL=[$5])
        LogicalTableScan(table=[[CATALOG, SALES, EMP]])

Issue Links

• is related to: CALCITE-5418 Nested Queries are not expanded properly
• is related to: CALCITE-5420 SqlToRel should populate the correlate id of a Project for queries with aggregates