beliefer commented on code in PR #44397:
URL: https://github.com/apache/spark/pull/44397#discussion_r1444003277


##########
sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java:
##########
@@ -271,6 +279,15 @@ protected String visitAggregateFunction(
     }
   }
 
+  protected String visitInverseDistributionFunction(
+      String funcName, boolean isDistinct, String[] inputs, String[] 
orderingWithinGroups) {
+    assert(isDistinct == false);
+    String withinGroup =
+      joinArrayToString(orderingWithinGroups, ", ", "WITHIN GROUP (ORDER BY ", 
")");

Review Comment:
   Please refer `visitSortOrder`.



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