[ https://issues.apache.org/jira/browse/CALCITE-3764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rui Wang reassigned CALCITE-3764: --------------------------------- Assignee: Rui Wang > 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 > Assignee: Rui Wang > Priority: Major > > {{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)