lock_multi.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- drop table if exists t1,t2;
- create table t1(n int);
- insert into t1 values (1);
- lock tables t1 write;
- update low_priority t1 set n = 4;
- select n from t1;
- unlock tables;
- n
- 4
- drop table t1;
- create table t1(n int);
- insert into t1 values (1);
- lock tables t1 read;
- update low_priority t1 set n = 4;
- select n from t1;
- unlock tables;
- n
- 1
- drop table t1;
- create table t1 (a int, b int);
- create table t2 (c int, d int);
- insert into t1 values(1,1);
- insert into t1 values(2,2);
- insert into t2 values(1,2);
- lock table t1 read;
- update t1,t2 set c=a where b=d;
- select c from t2;
- c
- 2
- drop table t1;
- drop table t2;
- create table t1 (a int);
- create table t2 (a int);
- lock table t1 write, t2 write;
- insert t1 select * from t2;
- drop table t2;
- ERROR 42S02: Table 'test.t2' doesn't exist
- drop table t1;