查看数据库 show databases;
使用数据库 use xxxxx;
查看该数据库下的所有表 show tables;
创建数据库 create database haotest charset utf8;
删除数据库 drop database haotest;
创建简单的表
mysql> create table stu (
-> snum int,
-> sname varchar(10)
-> )engine myisam charset utf8;
删除表 mysql> drop table stu;
修改表明 mysql> rename table stu to student;
插入数据
mysql> insert into student values
-> (1, 'zhangsan'),
-> (2,'lisi'),
-> (3,'wangwu');
删除一张表 mysql> truncate student;
truncate和delete差别:truncate相当于删除表并重建空表,delete删除行
增
插入多行
mysql> insert into class
-> (sname, gender, salary)
-> values
-> ('yoki', '女', 50),
-> ('sampson', '男', 100);
删
mysql> delete from class where expr;
改
mysql> update class
-> set fanbu=1234
-> where id=6;
mysql> update class
-> set company='tencent'
-> ,fanbu=1000
-> where id=11
-> ;
查
select sname,gender, id from class where epxr;