berkaysynnada commented on code in PR #15300: URL: https://github.com/apache/datafusion/pull/15300#discussion_r2002747852
########## 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. query I SELECT * FROM v1; Review Comment: In this Select query, Postgre does not drop the Sort operation, FYI @jayzhan211 @jonahgao -- 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
