jin xing created CALCITE-3399: --------------------------------- Summary: RelFieldTrimmer trim fields for UNION, INTERSECT, INTERSECT ALL, EXCEPT, EXCEPT ALL Key: CALCITE-3399 URL: https://issues.apache.org/jira/browse/CALCITE-3399 Project: Calcite Issue Type: Bug Components: core Reporter: jin xing Assignee: jin xing
RelFieldTrimmer#trimFields provides functionality to trim fields forĀ UNION, UNION ALL, INTERSECT, INTERSECT ALL, EXCEPT, EXCEPT ALL; ButĀ UNION ALL, INTERSECT, INTERSECT ALL, EXCEPT, EXCEPT ALL works by checking duplication. Column pruning on inputs of SetOp might lead to different semantics. -- This message was sent by Atlassian Jira (v8.3.4#803005)