HyukjinKwon commented on a change in pull request #24121:
[SPARK-26979][PYTHON][FOLLOW-UP] Make binary math/string functions take string
as columns as well
URL: https://github.com/apache/spark/pull/24121#discussion_r266341089
##########
File path: python/pyspark/sql/functions.py
##########
@@ -48,8 +55,11 @@ def _(col):
return _
-def _create_function(name, doc=""):
- """ Create a function that takes a Column object, by name"""
+def _create_function_with_column(name, doc=""):
Review comment:
I think the classification used in this file is different. In this file, I
see, for instance, binary functions, string functions, window functions which
is closely related with SparkSQL's type, argument specification, or how it
works, which is defined in Scala side's SQL side.
I already described the details in the doc test. I don't see big defferences
between `_create_function_with_column`, `_create_column_function` and
`_create_function_over_column`.
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