Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21045#discussion_r194210104
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -128,6 +128,175 @@ case class MapKeys(child: Expression)
override def prettyName: String = "map_keys"
}
+@ExpressionDescription(
+ usage = """
+ _FUNC_(a1, a2, ...) - Returns a merged array containing in the N-th
position the
+ N-th value of each array given.
--- End diff --
This description looks a bit confusing to me. How about `Returns a merged
array of structs in which the N-th struct contains all N-th values of input
arrays.`?
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
