GitHub user JoshRosen opened a pull request:
https://github.com/apache/spark/pull/7631
[SPARK-9293] Add analysis rule to ensure that set operations are only
performed on tables with equal numbers of columns
This patch adds an analyzer rule to ensure that set operations (union,
intersect, and except) are only applied to tables with the same number of
columns.
I also performed a bit of cleanup to refactor some of those logical
operators' code into a common `SetOperation` base class.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/JoshRosen/spark SPARK-9293
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7631.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 #7631
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commit 326d759c0a407a2ca9ea8a946ff84764031929b3
Author: Josh Rosen <[email protected]>
Date: 2015-07-24T02:33:50Z
Fix SPARK-9293
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