xiangfu0 commented on code in PR #11117:
URL: https://github.com/apache/pinot/pull/11117#discussion_r1271015899


##########
pinot-integration-tests/src/test/java/org/apache/pinot/integration/tests/MultiStageEngineIntegrationTest.java:
##########
@@ -485,6 +486,25 @@ public void testLiteralOnlyFunc()
     assertEquals(results.get(10).asText(), "hello!");
   }
 
+  @Test
+  public void testMultiValueColumnGroupBy()
+      throws Exception {
+    String pinotQuery = "SELECT count(*), arrayToMV(RandomAirports) FROM 
mytable "
+        + "GROUP BY arrayToMV(RandomAirports)";
+    JsonNode jsonNode = postQuery(pinotQuery);
+    Assert.assertEquals(jsonNode.get("resultTable").get("rows").size(), 154);
+  }
+
+  @Test
+  public void testMultiValueColumnGroupByOrderBy()
+      throws Exception {
+    String pinotQuery = "SELECT count(*), arrayToMV(RandomAirports) FROM 
mytable "

Review Comment:
   This only works at leaf stage not intermediate stage.



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