GitHub user hvanhovell opened a pull request:
https://github.com/apache/spark/pull/10402
[SPARK-8641][SQL] Native Spark Window functions - Follow-up (docs & tests)
This PR is a follow-up for PR https://github.com/apache/spark/pull/9819. It
adds documentation for the window functions and a couple of NULL tests.
The documentation was largely based on the documentation in (the source of)
Hive and Presto:
* https://prestodb.io/docs/current/functions/window.html
*
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics
I am not sure if we need to add the licenses of these two projects to the
licenses directory. They are both under the ASL. @srowen any thoughts?
cc @yhuai
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hvanhovell/spark SPARK-8641-docs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10402.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 #10402
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commit e1205622c1eed41b383881031d72c52b931798a4
Author: Herman van Hovell <[email protected]>
Date: 2015-12-20T13:54:26Z
Add documentation to window functions.
commit 2b806bbfcd0a8331f17239df2ab24bb82f462d01
Author: Herman van Hovell <[email protected]>
Date: 2015-12-20T14:48:32Z
Add NULL tests
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