mihaibudiu commented on code in PR #4733:
URL: https://github.com/apache/calcite/pull/4733#discussion_r2688375690
##########
core/src/test/resources/org/apache/calcite/test/SqlToRelConverterTest.xml:
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@@ -1892,15 +1892,15 @@ LogicalTableModify(table=[[CATALOG, SALES, EMP]],
operation=[DELETE], flattened=
</TestCase>
<TestCase name="testDistinctOrderByRand">
<Resource name="sql">
- <![CDATA[select distinct deptno, empno, 1, 'a' from emp order by rand(),
1]]>
+ <![CDATA[select distinct deptno, deptno, empno, 1, 'a' from emp order by
rand(), 1]]>
</Resource>
<Resource name="plan">
<![CDATA[
-LogicalProject(DEPTNO=[$0], EMPNO=[$1], EXPR$2=[$2], EXPR$3=[$3])
- LogicalSort(sort0=[$4], sort1=[$0], dir0=[ASC], dir1=[ASC])
- LogicalProject(DEPTNO=[$0], EMPNO=[$1], EXPR$2=[$2], EXPR$3=[$3],
EXPR$4=[RAND()])
+LogicalProject(DEPTNO=[$0], DEPTNO1=[$1], EMPNO=[$2], EXPR$2=[$3], EXPR$3=[$4])
+ LogicalSort(sort0=[$5], sort1=[$0], dir0=[ASC], dir1=[ASC])
+ LogicalProject(DEPTNO=[$0], DEPTNO0=[$0], EMPNO=[$1], EXPR$3=[$2],
EXPR$4=[$3], EXPR$5=[RAND()])
Review Comment:
1) Can a plan like this work?
```
LogicalProject(DEPTNO=[$0], DEPTNO1=[$0], EMPNO=[$2], EXPR$2=[$3],
EXPR$3=[$4])
LogicalSort(sort0=[$4], sort1=[$0], dir0=[ASC], dir1=[ASC])
LogicalProject(DEPTNO=[$0], EMPNO=[$1], EXPR$3=[$2], EXPR$4=[$3],
EXPR$5=[RAND()]
```
2) If this plan is equivalent, why can't your rewrite produce it?
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