GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/tajo/pull/458
TAJO-923: Add VAR_SAMP and VAR_POP window functions
I coded in the same way in https://github.com/apache/tajo/pull/427
(TAJO-921)
If needed, after merging pull-request 427, I will do refactoring.
This code is passed the following command.
```
mvn clean install -Pparallel-test,hcatalog-0.12.0 -DLOG_LEVEL=ERROR
-Dmaven.fork.count=2 &> TAJO-923.travis.ERROR.txt
```
The result file is https://app.box.com/s/clnx9d2bisfhbh2upgo3q6g7bdx7aic5
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/tajo TAJO-923
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/458.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 #458
----
commit 0b6fbbc2a04ffa870b835c5b35b779a1094348c3
Author: Dongjoon Hyun <[email protected]>
Date: 2015-03-24T00:02:51Z
TAJO-923: Add VAR_SAMP and VAR_POP window functions
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