创建表

create database usr_db;
use usr_db;
//创建表 user1
create table if not exists user1(
	id int,
	name varchar(20) comment '用户名',
	password char(32) comment '用户的密码',
	brithday date comment '用户的生日'
)charset = utf8 collate = utf8_general_ci engine = MyIsam;

mysql> create table if not exists user2(
    ->  id int,
    ->  name varchar(20) comment '用户名',
    ->  password char(32) comment '用户的密码',
    ->  brithday date comment '用户的生日'
    ->   )character set utf8 collate utf8_general_ci engine InnoDB;

查看表

修改表 alter

修改某个表的结构，比如字段名字，字段大小，字段类型，表的字符集类型，表的存储引擎，添加字段，删除字段等等。

insert into user values (1,'燕知春','12345','2000-10-01');
insert into user values (2,'齐夏','34512','1998-11-11');

alter table user add image_path varchar(128) comment '这个是用户的头像路径' after brithday;

alter table user modify name varchar(60);

desc user;
select * from user;
show create table user;

alter table user change name xingming varchar(60);

建议：