Github user mn-mikke commented on a diff in the pull request:
https://github.com/apache/spark/pull/21258#discussion_r186409077
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala
---
@@ -235,6 +235,69 @@ case class CreateMap(children: Seq[Expression])
extends Expression {
override def prettyName: String = "map"
}
+/**
+ * Returns a catalyst Map containing the two arrays in children
expressions as keys and values.
+ */
+@ExpressionDescription(
+ usage = """
+ _FUNC_(keys, values) - Creates a map with a pair of the given
key/value arrays. All elements
+ in keys should not be null""",
--- End diff --
and duplicated.
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