Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20400#discussion_r164972094
--- Diff: python/pyspark/sql/window.py ---
@@ -212,16 +218,20 @@ def rangeBetween(self, start, end):
values directly.
:param start: boundary start, inclusive.
- The frame is unbounded if this is
``Window.unboundedPreceding``, or
+ The frame is unbounded if this is
``Window.unboundedPreceding``,
+
``org.apache.spark.sql.catalyst.expressions.UnboundedPreceding``, or
any value less than or equal to max(-sys.maxsize,
-9223372036854775808).
:param end: boundary end, inclusive.
- The frame is unbounded if this is
``Window.unboundedFollowing``, or
+ The frame is unbounded if this is
``Window.unboundedFollowing``,
+
``org.apache.spark.sql.catalyst.expressions.UnboundedFollowing``, or
any value greater than or equal to min(sys.maxsize,
9223372036854775807).
+
--- End diff --
Can we have a doctest resembling this -
https://github.com/jiangxb1987/spark/blob/cec519b8cfbf1ed2a3107056ef5281a5be75ec54/sql/core/src/main/scala/org/apache/spark/sql/expressions/Window.scala#L214-L240
?
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