1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
#1384763034
-- Note: If you're running a MySQL version earlier than 5.0 (or if this scripts fails for you for any reason)
-- you'll need to run the following queries manually:
--
-- [ Both Pre-Renewal and Renewal ]
-- ALTER TABLE item_db2 ADD COLUMN `bindonequip` TINYINT(1) UNSIGNED DEFAULT NULL AFTER `view`;
-- INSERT INTO `sql_updates` (`timestamp`) VALUES (1384763034);
--
-- [ End ]
-- What follows is the automated script that does all of the above.
DELIMITER $$
DROP PROCEDURE IF EXISTS alter_if_not_exists $$
DROP PROCEDURE IF EXISTS alter_if_exists $$
CREATE PROCEDURE alter_if_not_exists(my_table TINYTEXT, my_column TINYTEXT, my_command TINYTEXT, my_predicate TEXT)
BEGIN
set @dbname = DATABASE();
IF EXISTS (
SELECT * FROM information_schema.TABLES
WHERE TABLE_SCHEMA = @dbname
AND TABLE_NAME = my_table
) AND NOT EXISTS (
SELECT * FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA = @dbname
AND TABLE_NAME = my_table
AND COLUMN_NAME = my_column
)
THEN
SET @q = CONCAT('ALTER TABLE ', @dbname, '.', my_table, ' ',
my_command, ' `', my_column, '` ', my_predicate);
PREPARE STMT FROM @q;
EXECUTE STMT;
END IF;
END $$
CREATE PROCEDURE alter_if_exists(my_table TINYTEXT, my_column TINYTEXT, my_command TINYTEXT, my_predicate TEXT)
BEGIN
set @dbname = DATABASE();
IF EXISTS (
SELECT * FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA = @dbname
AND TABLE_NAME = my_table
AND COLUMN_NAME = my_column
)
THEN
SET @q = CONCAT('ALTER TABLE ', @dbname, '.', my_table, ' ',
my_command, ' `', my_column, '` ', my_predicate);
PREPARE STMT FROM @q;
EXECUTE STMT;
END IF;
END $$
CALL alter_if_not_exists('item_db2', 'bindonequip', 'ADD COLUMN', 'TINYINT(1) UNSIGNED DEFAULT NULL AFTER `view`') $$
DROP PROCEDURE IF EXISTS alter_if_not_exists $$
DROP PROCEDURE IF EXISTS alter_if_exists $$
DELIMITER ';'
INSERT INTO `sql_updates` (`timestamp`) VALUES (1384763034);
|
