1、进入mysql
mysql -uroot -ppassword
2、查看数据库
show databases;
3、进入某个数据库
use zhiwen;
4、查看知问表
show tables;
5、查看表内容
select * from comment;
6、删除表的某一行数据
delete from comment where id=25;
7、修改表的某一行数据
update coment set user='hyt111' where id=27;
8、表中新增一行数据
insert into comment(id,titleid,user,....) values ('111','111','aaa','bbb',...);
9、创建数据表
show databases;
use zhiwen;
mysql> create table MyClass(
> id int(4) not null primary key auto_increment,
> name char(20) not null,
> sex int(4) not null default '0',
> degree double(16,2));
10、删除数据表
drop table myclass;
11、修改表名称
rename table MyClass to YouClass;
12、建库和建表的实例
create database school;
use school;
create table teacher
(
id int(3) auto_increment not null primary key,
name char(10) not null,
address varchar(50) default ‘hz’,
year date
);
//以下为插入字段
insert into teacher values(”,’allen’,'大连一中’,'1976-10-10′);
insert into teacher values(”,’jack’,'大连二中’,'1975-12-23′);