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  1. Calcite
  2. CALCITE-3764

AggregateCaseToFilterRule handles NULL values incorrectly

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.22.0
    • Component/s: None

      Description

      AggregateCaseToFilterRule handles NULL values incorrectly. It converts

      SELECT COUNT(CASE WHEN b THEN NULL ELSE 1 END) FROM t

      to

      SELECT COUNT(*) FILTER (WHERE b IS FALSE) FROM t

      which fails to count rows where b is UNKNOWN, so it should convert to

      SELECT COUNT(*) FILTER (WHERE b IS NOT TRUE) FROM t

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            People

            • Assignee:
              julianhyde Julian Hyde
              Reporter:
              julianhyde Julian Hyde

              Dates

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                Updated:
                Resolved:

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