mysql创建还原点

set autocommit = 0;
 
insert into t1(name) values ("user1");
savepoint p1;
 
insert into t1(name) values("user2");
 
svaepoint p2;
 
insert into t1(name) values("user3");
 
savepoint p3;
 
rollback to p2;
 
//结果是user3数据插入失败