jackwener commented on code in PR #4650:
URL: https://github.com/apache/arrow-datafusion/pull/4650#discussion_r1052731724


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benchmarks/expected-plans/q20.txt:
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@@ -1,17 +1,17 @@
 Sort: supplier.s_name ASC NULLS LAST
   Projection: supplier.s_name, supplier.s_address
-    LeftSemi Join: supplier.s_suppkey = __sq_2.ps_suppkey
+    LeftSemi Join: supplier.s_suppkey = __sq_1.ps_suppkey

Review Comment:
   😂 original implementation mix `TopDown` and `BottomUp`.
   It use `TopDown` overall, but use `BottomUp` when match the subPlan.
   I think it's a small mistake in original code but don't affect correctness.



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