GitHub user mgaido91 opened a pull request:
https://github.com/apache/spark/pull/21054
[SPARK-23907][SQL] Add regr_* functions
## What changes were proposed in this pull request?
The PR introduces regr_slope, regr_intercept, regr_r2, regr_sxx, regr_syy,
regr_sxy, regr_avgx, regr_avgy, regr_count.
The implementation of this functions mirrors Hive's one in HIVE-15978.
## How was this patch tested?
added UT (values compared with Hive)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mgaido91/spark SPARK-23907
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21054.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 #21054
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commit 90c266e09e276c37126d8428a4d00f4986d240e5
Author: Marco Gaido <marcogaido91@...>
Date: 2018-04-12T12:27:39Z
[SPARK-23907][SQL] Add regr_* functions
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