255) not null,
password varchar(255)
);
insert into t_user(id,password) values(1,'123');
ERROR 1364...id,username,password) values(1,'lisi','123');
insert into t_user(id,password) values(1,'123');
此语句出现了错误...没有表级约束。...values(4);
insert into t_user values(1,'zhangsan');
insert into t_user values(2,'zhangsan');
这两条语句出现了错误...'1' for key 'PRIMARY'
insert into t_user(username,email) values('jack','jack@123.com');
ERROR 1364