Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/6981#discussion_r34950774
--- Diff: python/pyspark/sql/functions.py ---
@@ -652,6 +652,164 @@ def ntile(n):
return Column(sc._jvm.functions.ntile(int(n)))
+@ignore_unicode_prefix
+@since(1.5)
+def date_format(dateCol, format):
+ """
+ Converts a date/timestamp/string to a value of string in the format
specified by the date
+ format given by the second argument.
+
+ A pattern could be for instance `dd.MM.yyyy` and could return a string
like '18.03.1993'. All
+ pattern letters of the Java class `java.text.SimpleDateFormat` can be
used.
+
+ NOTE: Use when ever possible specialized functions like `year`. These
benefit from a
+ specialized implementation.
+
+ >>> df0 = sqlContext.createDataFrame([('2015-04-08',)], ['a'])
+
--- End diff --
minor: Why do we have this blank line?
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