Kirill Kozlov created CALCITE-3355: -------------------------------------- Summary: SQLCase nullability check Key: CALCITE-3355 URL: https://issues.apache.org/jira/browse/CALCITE-3355 Project: Calcite Issue Type: Bug Components: core Affects Versions: 1.20.0 Reporter: Kirill Kozlov
When executing queries like: "SELECT COALESCE(name, 'unknown') as name_out FROM PCOLLECTION" (input 'name' is nullable) There is a need to know whether the result is nullable or not (in this case - not). During validation stage "COALESCE" is being transformed (via SqlValidatorImpl.performUnconditionalRewrites) into a "CASE" statement, which currently does not determine nullability of a result. -- This message was sent by Atlassian Jira (v8.3.4#803005)