Github user xuanyuanking commented on a diff in the pull request: https://github.com/apache/spark/pull/22326#discussion_r214805785 --- Diff: python/pyspark/sql/tests.py --- @@ -545,6 +545,15 @@ def test_udf_in_filter_on_top_of_join(self): right = self.spark.createDataFrame([Row(b=1)]) f = udf(lambda a, b: a == b, BooleanType()) df = left.crossJoin(right).filter(f("a", "b")) + + def test_udf_in_join_condition(self): --- End diff -- Sorry for the mess here, I'm changing.
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