Ruben Q L created CALCITE-3783: ---------------------------------- Summary: Rule to remove Join on top of empty Values Key: CALCITE-3783 URL: https://issues.apache.org/jira/browse/CALCITE-3783 Project: Calcite Issue Type: Improvement Components: core Reporter: Ruben Q L Assignee: Ruben Q L
There are some scenarios where a Join with a left/right child being an empty values can be removed: - [ LEFT | INNER | SEMI | ANTI ] JOIN(EmptyValues, X) => EmptyValues - [ INNER | SEMI ] JOIN(X, EmptyValues) => EmptyValues - ANTI (equi)JOIN(X, EmptyValues) => X The goal is to create new rule(s) (inside a new class named e.g. JoinRemoveRule) to match and cover these scenarios. -- This message was sent by Atlassian Jira (v8.3.4#803005)