Github user yhuai commented on the pull request:
https://github.com/apache/spark/pull/6169#issuecomment-102256380
@chenghao-intel We are little bit different on handling order by columns.
For Hive, order by columns need to appear in the select clause. We do not have
this restriction. In the analyzer, we will find the missing columns and add it
back to the project list.
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