Github user mn-mikke commented on a diff in the pull request: https://github.com/apache/spark/pull/21208#discussion_r185532437 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala --- @@ -1229,3 +1229,98 @@ 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'] + """) +case class ArrayRepeat(left: Expression, right: Expression) + extends BinaryExpression { --- End diff -- What about simplifying the type checking with the below snippet? ``` with ExpectsInputTypes { override def inputTypes: Seq[AbstractDataType] = Seq(AnyDataType, IntegerType) ... ```
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