innodb-deadlock.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
源码类别:
MySQL数据库
开发平台:
Visual C++
- drop table if exists t1,t2;
- create table t1 (id integer, x integer) engine=INNODB;
- insert into t1 values(0, 0);
- set autocommit=0;
- SELECT * from t1 where id = 0 FOR UPDATE;
- id x
- 0 0
- set autocommit=0;
- update t1 set x=2 where id = 0;
- update t1 set x=1 where id = 0;
- select * from t1;
- id x
- 0 1
- commit;
- commit;
- select * from t1;
- id x
- 0 2
- commit;
- drop table t1;
- create table t1 (id integer, x integer) engine=INNODB;
- create table t2 (b integer, a integer) engine=INNODB;
- insert into t1 values(0, 0), (300, 300);
- insert into t2 values(0, 10), (1, 20), (2, 30);
- commit;
- set autocommit=0;
- select * from t2;
- b a
- 0 10
- 1 20
- 2 30
- update t2 set a=100 where b=(SELECT x from t1 where id = b FOR UPDATE);
- select * from t2;
- b a
- 0 100
- 1 20
- 2 30
- select * from t1;
- id x
- 0 0
- 300 300
- set autocommit=0;
- update t1 set x=2 where id = 0;
- update t1 set x=1 where id = 0;
- select * from t1;
- id x
- 0 1
- 300 300
- commit;
- commit;
- select * from t1;
- id x
- 0 2
- 300 300
- commit;
- drop table t1, t2;
- create table t1 (id integer, x integer) engine=INNODB;
- create table t2 (b integer, a integer) engine=INNODB;
- insert into t1 values(0, 0), (300, 300);
- insert into t2 values(0, 0), (1, 20), (2, 30);
- commit;
- select a,b from t2 UNION SELECT id, x from t1 FOR UPDATE;
- a b
- 0 0
- 20 1
- 30 2
- 300 300
- select * from t2;
- b a
- 0 0
- 1 20
- 2 30
- select * from t1;
- id x
- 0 0
- 300 300
- update t2 set a=2 where b = 0;
- select * from t2;
- b a
- 0 2
- 1 20
- 2 30
- update t1 set x=2 where id = 0;
- update t1 set x=1 where id = 0;
- select * from t1;
- id x
- 0 1
- 300 300
- commit;
- commit;
- select * from t1;
- id x
- 0 2
- 300 300
- commit;
- drop table t1, t2;