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  1. Calcite
  2. CALCITE-4374

Support materialized view recognition when query distinct aggregate on target GROUP BY column

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.27.0
    • Component/s: None

      Description

      When query distinct aggregate on the column, which is in the group by list of target.
      Materialized view recognition should success.
      See this case.

      @Test void testQueryDistinctColumnInTargetGroupByList() {
          final String mv = ""
              + "select \"name\", \"deptno\" "
              + "from \"emps\" group by \"name\", \"deptno\"";
          final String query = ""
              + "select \"name\", count(distinct \"deptno\")\n"
              + "from \"emps\" group by \"name\"";
          sql(mv, query).ok();
        }
      

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              • Assignee:
                Unassigned
                Reporter:
                yanlin-Lynn Wang Yanlin
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                  Updated:
                  Resolved:

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