Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21053#discussion_r182326476
--- Diff: python/pyspark/sql/functions.py ---
@@ -1846,6 +1846,28 @@ def array_contains(col, value):
return Column(sc._jvm.functions.array_contains(_to_java_column(col),
value))
+@ignore_unicode_prefix
+@since(2.4)
+def element_at(col, value):
--- End diff --
The name `value` is confusing because this is for an index or a key?
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