GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/6647
[SPARK-8104][SQL] auto alias expressions in analyzer
Currently we auto alias expression in parser. However, during parser phase
we don't have enough information to do the right alias. For example, Generator
that has more than 1 kind of element need MultiAlias, ExtractValue don't need
Alias if it's in middle of a ExtractValue chain.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark alias
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6647.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 #6647
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commit d471a906b840f87c9e4fd1c63b727fef96aee7d8
Author: Wenchen Fan <[email protected]>
Date: 2015-06-04T16:24:40Z
auto alias expressions in analyzer
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