GitHub user zhichao-li opened a pull request:
https://github.com/apache/spark/pull/10731
[SPARK-12789]Support order by index
Num in Order by is treated as constant expression at the moment. I guess it
would be good to enable user to specify column by index which has been
supported in Hive 0.11.0 and later. Hive use
hive.groupby.orderby.position.alias to turn on/off this feature, not sure if we
need to follow this as well.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhichao-li/spark orderby
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10731.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 #10731
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commit 5a2270be260c635772fb4d46a7084eecf7166d87
Author: zhichao.li <[email protected]>
Date: 2016-01-12T08:03:26Z
support order by index
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