Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20217#discussion_r160948952
--- Diff: python/pyspark/sql/context.py ---
@@ -203,18 +203,46 @@ def registerFunction(self, name, f,
returnType=StringType()):
>>> _ = sqlContext.udf.register("stringLengthInt", lambda x:
len(x), IntegerType())
>>> sqlContext.sql("SELECT stringLengthInt('test')").collect()
[Row(stringLengthInt(test)=4)]
+ """
+ return self.sparkSession.catalog.registerFunction(name, f,
returnType)
+
+ @ignore_unicode_prefix
+ @since(2.3)
+ def registerUDF(self, name, f):
--- End diff --
The test cases are actually different. In this file, all the examples are
using sqlContext.
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