GitHub user HyukjinKwon opened a pull request:
https://github.com/apache/spark/pull/14788
[SPARK-17174][SQL] Add type support for TimestampType for add_months
## What changes were proposed in this pull request?
This PR adds the support for returning `TimestampType` for `add_months`
function.
The output type of this function follows the input data type. (e.g.
input:`TimestampType`, output : `TimestampType`)
## How was this patch tested?
Unit test in `DateExpressionsSuite`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/HyukjinKwon/spark SPARK-17174-add
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14788.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 #14788
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commit 777300e23d64a9f305feafb34a6c223c4328ea0e
Author: hyukjinkwon <[email protected]>
Date: 2016-08-24T11:39:27Z
Add type support for TimestampType for add_months
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