GitHub user huaxingao opened a pull request:
https://github.com/apache/spark/pull/21050
[SPARK-23912][SQL]add array_distinct
## What changes were proposed in this pull request?
Add array_distinct to remove duplicate value from the array.
## How was this patch tested?
Add unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/huaxingao/spark spark-23912
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21050.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 #21050
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commit 3bfb23ed6bfe0cefe9ed71f24678123bb57e3ce2
Author: Huaxin Gao <huaxing@...>
Date: 2018-04-12T04:52:25Z
[SPARK-23912][SQL]add array_distinct
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