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[SPARK-22939] [PySpark] Support Spark UDF in registerFunction #20137

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[SPARK-22939] [PySpark] Support Spark UDF in registerFunction #20137

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@gatorsmile
gatorsmile committed Jan 3, 2018
commit 35e6a4a5ba2750c4bd4c4bcb3d91f16e6ba1fdea
2 changes: 1 addition & 1 deletion python/pyspark/sql/catalog.py
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Expand Up @@ -260,7 +260,7 @@ def registerFunction(self, name, f, returnType=StringType()):
>>> from pyspark.sql.functions import udf
>>> from pyspark.sql.types import IntegerType, StringType
>>> random_udf = udf(lambda: int(random.random() * 100), IntegerType()).asNondeterministic()
>>> spark.catalog.registerFunction("random_udf", random_udf, StringType())
>>> spark.catalog.registerFunction("random_udf", random_udf, StringType()) # doctest: +SKIP
>>> spark.sql("SELECT random_udf()").collect() # doctest: +SKIP
[Row(random_udf()=u'82')]
"""
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