mysql命令行

mysql -u root -p

create database bookstore;

drop database bookstore;

use bookstore

create table user

(

　　id int auto_increment not null,

　　username　 varchar(10) not null,

　　password　 varchar(10) not null,

　　primary 　　key(id)
);

show tables;

drop table user;

delete from user; //delete all records in table user

describe user;

insert into user values(1, 'yu', 'yu');

insert into user values(2, 'chenyonghai', '19930422');

select * from user;