anton5798 commented on code in PR #45999:
URL: https://github.com/apache/spark/pull/45999#discussion_r1568012332
##########
sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala:
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@@ -621,4 +621,14 @@ class DataFrameJoinSuite extends QueryTest
checkAnswer(joined, Row("x", null, null))
checkAnswer(joined.filter($"new".isNull), Row("x", null, null))
}
+
+ test("SPARK-47810: replace equivalent expression to <=> in join condition") {
Review Comment:
Let's also add a summary of plan change (before/after) and quantified
performance benefit in the PR description
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