Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.0.2
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None
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None
Description
If ALTER TABLE contains multiple parts, and one of them creates a problem for a next one, IF NOT EXISTS or IF EXISTS clause in the following one does not work, the statement still produces an error, and does not add the column at all:
MariaDB [test]> show create table t1; |
+-------+---------------------------------------------------------------------------------------+ |
| Table | Create Table | |
+-------+---------------------------------------------------------------------------------------+ |
| t1 | CREATE TABLE `t1` ( |
`i` int(11) DEFAULT NULL |
) ENGINE=InnoDB DEFAULT CHARSET=latin1 | |
+-------+---------------------------------------------------------------------------------------+ |
1 row in set (0.00 sec) |
|
|
MariaDB [test]> alter table t1 add column a int, add column if not exists a int; |
ERROR 1060 (42S21): Duplicate column name 'a' |
|
|
MariaDB [test]> show create table t1; |
+-------+---------------------------------------------------------------------------------------+ |
| Table | Create Table | |
+-------+---------------------------------------------------------------------------------------+ |
| t1 | CREATE TABLE `t1` ( |
`i` int(11) DEFAULT NULL |
) ENGINE=InnoDB DEFAULT CHARSET=latin1 | |
+-------+---------------------------------------------------------------------------------------+ |
1 row in set (0.00 sec) |
Same for DROP COLUMN.
Test case:
create table t1 (i int); |
alter table t1 add column a int, add column if not exists a int; |
show create table t1; |
revision-id: bar@mariadb.org-20130424142022-u4xhikvoqggze9b0
|
revno: 3745
|
branch-nick: 10.0
|
Attachments
Issue Links
- relates to
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MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252)
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- Closed
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