holdenk created SPARK-18777:
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             Summary: Return UDF objects when registering from Python
                 Key: SPARK-18777
                 URL: https://issues.apache.org/jira/browse/SPARK-18777
             Project: Spark
          Issue Type: Improvement
          Components: PySpark, SQL
            Reporter: holdenk


In Scala when registering a UDF it gives you back a UDF object that you can use 
in the Dataset/DataFrame API as well as with SQL expressions. We can do the 
same in Python, for both Python UDFs and Java UDFs registered from Python.



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