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author | Jeff Zhang <zjffdu@apache.org> | 2015-11-25 13:49:58 +0000 |
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committer | Sean Owen <sowen@cloudera.com> | 2015-11-25 13:49:58 +0000 |
commit | b9b6fbe89b6d1a890faa02c1a53bb670a6255362 (patch) | |
tree | e3a06f154faaee4f71d6bb81948865e2e7aa6278 /python | |
parent | 63850026576b3ea7783f9d4b975171dc3cff6e4c (diff) | |
download | spark-b9b6fbe89b6d1a890faa02c1a53bb670a6255362.tar.gz spark-b9b6fbe89b6d1a890faa02c1a53bb670a6255362.tar.bz2 spark-b9b6fbe89b6d1a890faa02c1a53bb670a6255362.zip |
[SPARK-11860][PYSAPRK][DOCUMENTATION] Invalid argument specification …
…for registerFunction [Python]
Straightforward change on the python doc
Author: Jeff Zhang <zjffdu@apache.org>
Closes #9901 from zjffdu/SPARK-11860.
Diffstat (limited to 'python')
-rw-r--r-- | python/pyspark/sql/context.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/python/pyspark/sql/context.py b/python/pyspark/sql/context.py index 5a85ac3102..a49c1b58d0 100644 --- a/python/pyspark/sql/context.py +++ b/python/pyspark/sql/context.py @@ -195,14 +195,15 @@ class SQLContext(object): @ignore_unicode_prefix @since(1.2) def registerFunction(self, name, f, returnType=StringType()): - """Registers a lambda function as a UDF so it can be used in SQL statements. + """Registers a python function (including lambda function) as a UDF + so it can be used in SQL statements. In addition to a name and the function itself, the return type can be optionally specified. When the return type is not given it default to a string and conversion will automatically be done. For any other return type, the produced object must match the specified type. :param name: name of the UDF - :param samplingRatio: lambda function + :param f: python function :param returnType: a :class:`DataType` object >>> sqlContext.registerFunction("stringLengthString", lambda x: len(x)) |