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e988c36bf0
This change adds support to change column definitions in ALTER VIEW
statements. This support only required minor changes in the parser
and the AlterViewStmt constructor.
Here's an example syntax:
alter view foo (a, b comment 'helloworld') as
select * from bar;
describe foo;
+------+--------+------------+
| name | type | comment |
+------+--------+------------+
| a | string | |
| b | string | helloworld |
+------+--------+------------+
The following tests were modified:
1. ParserTest - To check that the parser handles column definitions
for alter view statements.
2. AnalyzerDDLTest - To ensure that the analyzer supports the
change column definitions parsed.
3. TestDdlStatements - To verify the end-to-end functioning of
ALTER VIEW statements with change column definitions.
4. AuthorizationTest - To ensure that alter table commands with
column definitions check permissions as expected.
Change-Id: I6073444a814a24d97e80df15fcd39be2812f63fc
Reviewed-on: http://gerrit.cloudera.org:8080/10720
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>