jayzhan211 commented on code in PR #15300: URL: https://github.com/apache/datafusion/pull/15300#discussion_r2002215012
########## datafusion/sqllogictest/test_files/union.slt: ########## @@ -907,11 +907,56 @@ SELECT * FROM (SELECT y FROM u1 UNION ALL SELECT y FROM u2) ORDER BY y; 20 40 +query TT +explain SELECT * FROM (SELECT y FROM u1 UNION ALL SELECT y FROM u2) ORDER BY y; +---- +logical_plan +01)Sort: y ASC NULLS LAST +02)--Union +03)----Projection: CAST(u1.y AS Int64) AS y +04)------TableScan: u1 projection=[y] +05)----TableScan: u2 projection=[y] +physical_plan +01)SortPreservingMergeExec: [y@0 ASC NULLS LAST] +02)--UnionExec +03)----SortExec: expr=[y@0 ASC NULLS LAST], preserve_partitioning=[true] +04)------ProjectionExec: expr=[CAST(y@0 AS Int64) as y] +05)--------RepartitionExec: partitioning=RoundRobinBatch(4), input_partitions=1 +06)----------DataSourceExec: partitions=1, partition_sizes=[1] +07)----SortExec: expr=[y@0 ASC NULLS LAST], preserve_partitioning=[false] +08)------DataSourceExec: partitions=1, partition_sizes=[1] + +# optimize_subquery_sort in create_relation removes Sort so the result is not sorted. Review Comment: I think removing Sort makes sense, but we need to move this rule to optimizer. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
