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
|
connection node_2;
CREATE TABLE t1(a int not null primary key auto_increment,b int) engine=InnoDB;
insert into t1 values (NULL,1);
connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connection node_2a;
begin;
update t1 set a =5;
connection node_2;
select * from t1;
a b
2 1
disconnect node_2a;
connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connection node_2a;
begin;
update t1 set a =5;
connection node_2;
select * from t1;
a b
2 1
disconnect node_2a;
connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connection node_2a;
begin;
update t1 set a =5, b=2;
connection node_2;
ALTER TABLE t1 ADD UNIQUE KEY(b);
select * from t1;
a b
2 1
disconnect node_2a;
connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connection node_2a;
begin;
update t1 set a =5, b=2;
connect node_2b, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connection node_2b;
begin;
update t1 set a =6, b=7;
connection node_2;
ALTER TABLE t1 ADD UNIQUE KEY(b);
Warnings:
Note 1831 Duplicate index `b_2`. This is deprecated and will be disallowed in a future release
select * from t1;
a b
2 1
disconnect node_2a;
disconnect node_2b;
drop table t1;
|
