GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/14746
[SPARK-17180] [SQL] Fix View Resolution Order in ALTER VIEW AS SELECT
### What changes were proposed in this pull request?
In the current master branch, when users do not specify the database name
in the `ALTER VIEW AS SELECT` command, we always try to alter the permanent
view even if the temporary view exists. This PR is to resolve this issue.
After the fix, `ALTER VIEW AS SELECT` command alters the temporary view if
the temp view exists; otherwise, try to alter the permanent view. This order is
consistent with another command `DROP VIEW`, since users are unable to specify
the keyword TEMPORARY.
### How was this patch tested?
Added test cases.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark alterViewFix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14746.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 #14746
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commit db45b4cc3614965980571c6203074af845e4d249
Author: gatorsmile <[email protected]>
Date: 2016-08-22T06:45:37Z
fix.
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