Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21208#discussion_r187856067
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -1468,3 +1468,149 @@ case class Flatten(child: Expression) extends
UnaryExpression {
override def prettyName: String = "flatten"
}
+
+/**
+ * Returns the array containing the given input value (left) count (right)
times.
+ */
+@ExpressionDescription(
+ usage = "_FUNC_(element, count) - Returns the array containing element
count times.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_('123', 2);
+ ['123', '123']
+ """)
--- End diff --
`since = "2.4.0"`?
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