GitHub user maclockard opened a pull request:
https://github.com/apache/spark/pull/18710
[SPARK][Docs] Added note on meaning of position to substring function
## What changes were proposed in this pull request?
Enhanced some existing documentation
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maclockard/spark maclockard-patch-1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18710.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 #18710
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commit d503359235a06f92605755fb994272a03b4d2743
Author: Mac <[email protected]>
Date: 2017-07-22T00:01:24Z
Added note on meaning of position to substring function
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