mihaibudiu commented on code in PR #4475:
URL: https://github.com/apache/calcite/pull/4475#discussion_r2223983382
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core/src/test/resources/org/apache/calcite/test/RelOptRulesTest.xml:
##########
@@ -17792,6 +17792,31 @@ LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2],
MGR=[$3], HIREDATE=[$4], SAL=[$
LogicalSort(sort0=[$7], sort1=[$0], dir0=[ASC], dir1=[ASC])
LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], EXPR$9=[null:NULL])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
+]]>
+ </Resource>
+ </TestCase>
+ <TestCase name="testSortRemoveDuplicateKeys">
+ <Resource name="sql">
+ <![CDATA[select d1
+ from (select deptno as d1, deptno as d2 from dept) as tmp
Review Comment:
well, if you sort a second time by the same key, even with a different
direction, it should not change the result
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