snuyanzin commented on code in PR #25752:
URL: https://github.com/apache/flink/pull/25752#discussion_r1881954651


##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/plan/stream/sql/RankTest.scala:
##########
@@ -1011,5 +1011,16 @@ class RankTest extends TableTestBase {
     util.verifyExplainInsert(sql, ExplainDetail.CHANGELOG_MODE)
   }
 
+  @Test
+  def testOptimizeSelectDistinct(): Unit = {
+    val sql =
+      """
+        |SELECT DISTINCT a, b, c
+        |FROM MyTable

Review Comment:
   Do we have any IT case for that?



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