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
|
connect con2,localhost,root,,;
connection default;
create table t1 (
pk int not null primary key,
col1 int not null,
col2 int not null,
key(col1)
) engine=rocksdb;
create table ten(a int primary key);
insert into ten values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k(a int primary key);
insert into one_k select A.a + B.a* 10 + C.a * 100 from ten A, ten B, ten C;
insert into t1 select a,a,a from one_k;
# Start the transaction, get the snapshot
begin;
select * from t1 where col1<10;
pk col1 col2
0 0 0
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
9 9 9
# Connect with another connection and make a conflicting change
connection con2;
begin;
update t1 set col2=123456 where pk=0;
commit;
connection default;
update t1 set col2=col2+1 where col1 < 10 limit 5;
ERROR 40001: Deadlock found when trying to get lock; try restarting transaction (snapshot conflict)
disconnect con2;
drop table t1, ten, one_k;
|
