Re: [PR] [Minor] Remove redundant ProjectionExec nodes in sort-based plans [datafusion]

["alamb (via GitHub)" <gi...@apache.org>]

alamb commented on code in PR #20780:
URL: https://github.com/apache/datafusion/pull/20780#discussion_r2911479177


##########
datafusion/sql/tests/cases/plan_to_sql.rs:
##########
@@ -1984,7 +1984,7 @@ fn test_complex_order_by_with_grouping() -> Result<()> {
     }, {
         assert_snapshot!(
             sql,
-            @r#"SELECT j1.j1_id, j1.j1_string, lochierarchy FROM (SELECT j1.j1_id, j1.j1_string, (grouping(j1.j1_id) + grouping(j1.j1_string)) AS lochierarchy, grouping(j1.j1_string), grouping(j1.j1_id) FROM j1 GROUP BY ROLLUP (j1.j1_id, j1.j1_string)) ORDER BY lochierarchy DESC NULLS FIRST, CASE WHEN (("grouping(j1.j1_id)" + "grouping(j1.j1_string)") = 0) THEN j1.j1_id END ASC NULLS LAST LIMIT 100"#
+            @"SELECT j1.j1_id, j1.j1_string, (grouping(j1.j1_id) + grouping(j1.j1_string)) AS lochierarchy FROM j1 GROUP BY ROLLUP (j1.j1_id, j1.j1_string) ORDER BY lochierarchy DESC NULLS FIRST, CASE WHEN (lochierarchy = 0) THEN j1.j1_id END ASC NULLS LAST LIMIT 100"

Review Comment:
   that certainly looks nicer



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