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udf (SparkSession)

Returns a UDFRegistration for UDF registration.

Syntax​

udf

Returns​

UDFRegistration

Examples​

Python
# Register a Python UDF, and use it in SQL.
strlen = spark.udf.register("strlen", lambda x: len(x))
spark.sql("SELECT strlen('test')").show()
# +------------+
# |strlen(test)|
# +------------+
# |           4|
# +------------+
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