GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/14186
[SPARK-16530] [SQL] [TRIVIAL] Wrong Parser Keyword in ALTER TABLE CHANGE
COLUMN
#### What changes were proposed in this pull request?
Based on the [Hive SQL
syntax](https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-ChangeColumnName/Type/Position/Comment),
the command to change column name/type/position/comment is `ALTER TABLE CHANGE
COLUMN`. However, in our .g4 file, it is `ALTER TABLE CHANGE COLUMNS`. Because
it is the last optional keyword, it does not take any effect. Thus, I put the
issue as a Trivial level.
cc @hvanhovell
#### How was this patch tested?
Existing test cases
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark changeColumns
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14186.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 #14186
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commit 89a4eed6f7557bb7264edc067f1406f1904a21b1
Author: gatorsmile <[email protected]>
Date: 2016-07-13T19:18:10Z
fix
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