Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/18540#discussion_r125735576
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/WindowSpec.scala ---
@@ -174,28 +191,22 @@ class WindowSpec private[sql](
*/
// Note: when updating the doc for this method, also update
Window.rangeBetween.
def rangeBetween(start: Long, end: Long): WindowSpec = {
--- End diff --
It might be the easiest to make it take a `Column`, so `rangeBetween(begin:
Column, end: Column)`, only downside to this is that we need some way to
express the special boundaries (`current row`, `unbounded`). Also cc @rxin
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