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Diffstat (limited to 'python/pyspark/sql/functions.py')
| -rw-r--r-- | python/pyspark/sql/functions.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/python/pyspark/sql/functions.py b/python/pyspark/sql/functions.py index fa04f4cd83..2f7c2f4aac 100644 --- a/python/pyspark/sql/functions.py +++ b/python/pyspark/sql/functions.py @@ -122,6 +122,21 @@ _functions_1_4 = { 'bitwiseNOT': 'Computes bitwise not.', } +_functions_1_6 = { + # unary math functions + "stddev": "Aggregate function: returns the unbiased sample standard deviation of" + + " the expression in a group.", + "stddev_samp": "Aggregate function: returns the unbiased sample standard deviation of" + + " the expression in a group.", + "stddev_pop": "Aggregate function: returns population standard deviation of" + + " the expression in a group.", + "variance": "Aggregate function: returns the population variance of the values in a group.", + "var_samp": "Aggregate function: returns the unbiased variance of the values in a group.", + "var_pop": "Aggregate function: returns the population variance of the values in a group.", + "skewness": "Aggregate function: returns the skewness of the values in a group.", + "kurtosis": "Aggregate function: returns the kurtosis of the values in a group." +} + # math functions that take two arguments as input _binary_mathfunctions = { 'atan2': 'Returns the angle theta from the conversion of rectangular coordinates (x, y) to' + @@ -172,6 +187,8 @@ for _name, _doc in _binary_mathfunctions.items(): globals()[_name] = since(1.4)(_create_binary_mathfunction(_name, _doc)) for _name, _doc in _window_functions.items(): globals()[_name] = since(1.4)(_create_window_function(_name, _doc)) +for _name, _doc in _functions_1_6.items(): + globals()[_name] = since(1.6)(_create_function(_name, _doc)) del _name, _doc |