GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/10660
[SPARK-12687][SQL] Support from clause surrounded by `()`.
JIRA: https://issues.apache.org/jira/browse/SPARK-12687
Some queries such as `(select 1 as a) union (select 2 as a)` can't work.
This patch fixes it.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 fix-union
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10660.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 #10660
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commit fc5587e9d8f89bba27a87c2de26349e7d6744d88
Author: Liang-Chi Hsieh <[email protected]>
Date: 2016-01-08T07:29:37Z
Support from clause surrounded by `()`.
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