Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/19872#discussion_r154644084 --- Diff: python/pyspark/sql/udf.py --- @@ -56,6 +56,10 @@ def _create_udf(f, returnType, evalType): return udf_obj._wrapped() +class UDFColumn(Column): --- End diff -- BTW, what do you think about adding an attribute instead?
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