Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/21802#discussion_r205703558
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -3545,6 +3545,14 @@ object functions {
*/
def array_max(e: Column): Column = withExpr { ArrayMax(e.expr) }
+ /**
+ * Returns a random permutation of the given array.
+ *
+ * @group collection_funcs
+ * @since 2.4.0
--- End diff --
Shall we match the documentation here as well?
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