GitHub user annamolchanova opened a pull request:
https://github.com/apache/spark/pull/22533
[SPARK-18818][PYTHON] Add 'ascending' parameter to Window.orderBy()
## What changes were proposed in this pull request?
Pass `ascending` parameter to Window's orderBy() function the same like
DataFrame's orderBy() accepts.
This allows to specify descending order without building Column object.
It makes this function more consistent and convenient.
## How was this patch tested?
Unit tests were run. Docstring tests were added to Window.orderBy()
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/annamolchanova/spark
SPARK-18818-window_ascending_parameter
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22533.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #22533
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commit 40f8295b97e887108e96a6b4a39cc6781ebb406d
Author: Anna Molchanova <anna_molchanova@...>
Date: 2018-09-23T19:11:42Z
Implement ascending parameter in window orderBy
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