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HomeDatabaseMysql TutorialMySQL基础-数据库基本操作_MySQL

1. 删除数据库 DROP DATABASE 数据库名;

mysql> drop database test;

即删除数据库模式

2 .创建数据库 create DATABASE 数据库名;

mysql> create database test;

在Windows和Linux对数据库名和表名的处理是不同的,在Windows是不区分大小写,而在Linux中是区分大小写的

3 创建操作数据库的专用用户

语法规则:

创建新用户并赋予其对数据库的操作权限 GRANT ALL PRIVILEGES ON 数据库名.* TO 用户名@localhost IDENTIFIED BY 密码

mysql> GRANT ALL PRIVILEGES ON test * TO user$localhost IDENTIFIED BY '12345';

这样赋予了从本地连接数据库的用户user能对home数据库中的所有对象进行操作的全部权限(ALL PRIVILEGES)。权限是衡量用户能对数据库进行什么样的操作,具体用CREATE(创建)SELECT(检索)UPDATE(更新)DELETE(删除)等权限。另外,[test.*]部分,对数据库中的具体表操作

4 使用user用户来登录数据库

mysql> -u user -p

Enter password: ******

5 指定使用的数据库

使用指定的数据库 USE 数据库名

mysql> use home;

6 在使用MySQL监视器时,忘记指定的数据库,可以使用SELECT命令查看现在使用的数据库

显示现在使用中的数据库 SELECT DATABASE();

mysql> select database();

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