Julian Hyde created CALCITE-3764: ------------------------------------ Summary: AggregateCaseToFilterRule handles NULL values correctly Key: CALCITE-3764 URL: https://issues.apache.org/jira/browse/CALCITE-3764 Project: Calcite Issue Type: Bug Reporter: Julian Hyde
{{AggregateCaseToFilterRule}} handles NULL values correctly. It converts {code:sql} SELECT COUNT(CASE WHEN b THEN NULL ELSE 1 END) FROM t {code} to {code:sql} SELECT COUNT(*) FILTER (WHERE b IS FALSE) FROM t {code} which fails to count rows where {{b}} is UNKNOWN, so it should convert to {code:sql} SELECT COUNT(*) FILTER (WHERE b IS NOT TRUE) FROM t {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)