gustavodemorais commented on code in PR #26702:
URL: https://github.com/apache/flink/pull/26702#discussion_r2158223097
##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/plan/stream/sql/MultiJoinTest.java:
##########
@@ -154,6 +163,16 @@ void testFourWayComplexJoinRelPlan() {
+ "LEFT JOIN Shipments s ON p.user_id_2 =
s.user_id_3");
}
+ @Test
+ void testFourWayJoinNoCJKRelPlan() {
+ util.verifyRelPlan(
+ "SELECT u.user_id_0, u.name, o.order_id, p.payment_id,
s.location "
+ + "FROM Users u "
+ + "LEFT JOIN Orders o ON u.user_id_0 = o.user_id_1 "
+ + "INNER JOIN Payments p ON u.user_id_0 = p.user_id_2 "
+ + "LEFT JOIN Shipments s ON p.payment_id =
s.user_id_3");
+ }
+
Review Comment:
Ah, I see. In general, I'm pretty sure we don't. I think this is relevant
for reordering. The rule assumes reorder should've been done earlier and I
think we could drop it. Could you think of other consequences?
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