blob: 434b72831468e10a025966b91b60110494deee86 (
plain)
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
|
DROP TABLE IF EXISTS t1;
# Checking variables
SHOW VARIABLES LIKE 'innodb_fake_changes';
Variable_name Value
innodb_fake_changes OFF
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='innodb_fake_changes';
VARIABLE_VALUE
OFF
SET innodb_fake_changes=1;
SHOW VARIABLES LIKE 'innodb_fake_changes';
Variable_name Value
innodb_fake_changes ON
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='innodb_fake_changes';
VARIABLE_VALUE
ON
SET innodb_fake_changes=default;
SHOW VARIABLES LIKE 'innodb_fake_changes';
Variable_name Value
innodb_fake_changes OFF
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='innodb_fake_changes';
VARIABLE_VALUE
OFF
# Explicit COMMIT should fail when innodb_fake_changes is enabled
# DML should be fine
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);
SET autocommit=0;
SET innodb_fake_changes=1;
BEGIN;
INSERT INTO t1 VALUES (2);
UPDATE t1 SET a=0;
DELETE FROM t1 LIMIT 1;
SELECT * FROM t1;
a
1
COMMIT;
ERROR HY000: Got error 131 "Command not supported by database" during COMMIT
SET innodb_fake_changes=default;
DROP TABLE t1;
# DDL must result in error
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
SET autocommit=0;
SET innodb_fake_changes=1;
BEGIN;
CREATE TABLE t2 (a INT) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t2` (errno: 131 "Command not supported by database")
DROP TABLE t1;
ERROR 42S02: Unknown table 't1'
TRUNCATE TABLE t1;
ERROR HY000: Got error 131 "Command not supported by database" during COMMIT
ALTER TABLE t1 ENGINE=MyISAM;
ERROR HY000: Got error 131 "Command not supported by database" during COMMIT
ROLLBACK;
SET innodb_fake_changes=default;
DROP TABLE t1;
|
