Github user tarekauel commented on a diff in the pull request:
https://github.com/apache/spark/pull/7462#discussion_r34955687
--- Diff: python/pyspark/sql/functions.py ---
@@ -652,6 +658,16 @@ def ntile(n):
return Column(sc._jvm.functions.ntile(int(n)))
+@since(1.5)
+def size(col):
+ """
+ Collection function: returns the length of the array or map stored in
the column.
+ :param col: name of column or expression
--- End diff --
Could you add an example/test here?
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