Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21025#discussion_r180431349
--- Diff: python/pyspark/sql/functions.py ---
@@ -2080,6 +2080,21 @@ def size(col):
return Column(sc._jvm.functions.size(_to_java_column(col)))
+@since(2.4)
+def array_min(col):
+ """
+ Collection function: returns the minimum value of the array.
+
+ :param col: name of column or expression
+
+ >>> df = spark.createDataFrame([([2, 1, 3],), ([None, 10, -1],)],
['data'])
+ >>> df.select(array_min(df.data).alias('min')).collect()
+ [Row(min=1), Row(min=-1)]
+ """
--- End diff --
you are right, good catch! I was looking for reference at the `sort_array`
function below which has the same issue. I will fix it there too, thanks.
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