Github user dilipbiswal commented on a diff in the pull request: https://github.com/apache/spark/pull/21240#discussion_r186277072 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala --- @@ -222,6 +222,51 @@ case class Stack(children: Seq[Expression]) extends Generator { } } +/** + * Replicate the row N times. N is specified as the first argument to the function. + * {{{ + * SELECT replicate_rows(2, "val1", "val2") -> + * 2 val1 val2 + * 2 val1 val2 + * }}} + */ +@ExpressionDescription( +usage = "_FUNC_(n, expr1, ..., exprk) - Replicates `n`, `expr1`, ..., `exprk` into `n` rows.", --- End diff -- @viirya I did think about it Simon. But then, i decided to match the output with Hive.
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