[ https://issues.apache.org/jira/browse/CALCITE-4021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julian Hyde closed CALCITE-4021. -------------------------------- > EnumerableUnion should preserve ordering when all inputs have the same > collation > -------------------------------------------------------------------------------- > > Key: CALCITE-4021 > URL: https://issues.apache.org/jira/browse/CALCITE-4021 > Project: Calcite > Issue Type: Improvement > Reporter: Rui Wang > Assignee: Rui Wang > Priority: Major > Fix For: 1.27.0 > > > For query: > {code:sql} > select name from sales_dept > union > select name from it_dept > order by mgr > {code} > We could generate a plan based on > https://issues.apache.org/jira/browse/CALCITE-4017: > {code:java} > EnumerableUnion > EnumerableProject > EnumerableSort > EnumerableTableScan[name="sales_dept"] > EnumerableProject > EnumerableSort > EnumerableTableScan[name="it_dept"] > {code} > So EnumerableUnion should preserve ordering when all input have the same > collation to make sure result of query is correct. -- This message was sent by Atlassian Jira (v8.20.10#820010)