GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/7504
[SPARK-8241][SQL] string function: concat_ws.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark concat_ws
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7504.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 #7504
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commit a86668d82afed29bb74e2708bf425773e4d698af
Author: Reynold Xin <[email protected]>
Date: 2015-07-19T02:45:27Z
[SPARK-8241][SQL] string function: concat_ws.
I also changed the semantics of concat w.r.t. null back to the same
behavior as Hive.
That is to say, concat now returns null if any input is null.
commit 3c344a699718c553882c4246bfc6d1684b7d99c7
Author: Reynold Xin <[email protected]>
Date: 2015-07-19T02:47:00Z
Updated comments.
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