GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/19576
[SPARK-19727][SQL][followup] Fix for round function that modifies original
column
## What changes were proposed in this pull request?
This is a followup of https://github.com/apache/spark/pull/17075 , to fix
the bug in codegen path.
## How was this patch tested?
new regression test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark bug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19576.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 #19576
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commit cba65d1c72427c9e36eb097dcdf9c2420f66d5db
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2017-10-25T20:33:40Z
Fix for round function that modifies original column
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