GitHub user kiszk opened a pull request:
https://github.com/apache/spark/pull/21061
[SPARK-23914][SQL] Add array_union function
## What changes were proposed in this pull request?
The PR adds the SQL function `array_union`. The behavior of the function is
based on Presto's one.
This function returns returns an array of the elements in the union of
array1 and array2.
Note: The order of elements in the result is not defined.
## How was this patch tested?
Added UTs
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kiszk/spark SPARK-23914
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21061.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 #21061
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commit 6ff73b5f0d24bf970d707a6399ab846273bb8443
Author: Kazuaki Ishizaki <ishizaki@...>
Date: 2018-04-13T06:08:06Z
initial commit
commit 660427104b0a4f1830a3307147664a58f1fa08dc
Author: Kazuaki Ishizaki <ishizaki@...>
Date: 2018-04-13T06:20:34Z
update description
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