Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18814#discussion_r131678887
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/Window.scala ---
@@ -210,6 +210,17 @@ object Window {
spec.rangeBetween(start, end)
}
+ /**
+ * @param start boundary start, inclusive. The frame is unbounded if the
expression is
--- End diff --
we should copy-paste the document from `rangeBetween(start: Long, end:
Long)` to here, and replace `long values` with `literal values`. We should also
update the examle to show how to use special range boundary.
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