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HomeDatabaseMysql TutorialMYSQL添加新用户MYSQL为用户创建数据库MYSQL为新用户分配权限_MySQL

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MYSQL添加新用户MYSQL为用户创建数据库MYSQL为新用户分配权限

 

1.新建用户

 

//登录MYSQL

@>mysql -u root -p

@>密码

//创建用户

mysql> insert into mysql.user(Host,User,Password) values(‘localhost’,'jeecn’,password(‘jeecn’));

//刷新系统权限表

mysql>flush privileges;

这样就创建了一个名为:jeecn  密码为:jeecn  的用户。

 

//退出后登录一下

mysql>exit;

@>mysql -u jeecn -p

@>输入密码

mysql>登录成功

 

2.为用户授权

 

//登录MYSQL(有ROOT权限)。我里我以ROOT身份登录.

@>mysql -u root -p

@>密码

//首先为用户创建一个数据库(jeecnDB)

mysql>create database jeecnDB;

//授权jeecn用户拥有jeecn数据库的所有权限

@>grant all privileges on jeecnDB.* to jeecn@localhost identified by ‘jeecn’;

//刷新系统权限表

mysql>flush privileges;

mysql>其它操作

 

//如果想指定部分权限给一用户,可以这样来写:

mysql>grant select,update on jeecnDB.* to jeecn@localhost identified by ‘jeecn’;

//刷新系统权限表。

mysql>flush privileges;

 

mysql> grant 权限1,权限2,…权限n on 数据库名称.表名称 to 用户名@用户地址 identified by ‘连接口令’;

 

权限1,权限2,…权限n代表select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file等14个权限。

当权限1,权限2,…权限n被all privileges或者all代替,表示赋予用户全部权限。

当数据库名称.表名称被*.*代替,表示赋予用户操作服务器上所有数据库所有表的权限。

用户地址可以是localhost,也可以是ip地址、机器名字、域名。也可以用’%’表示从任何地址连接。

‘连接口令’不能为空,否则创建失败。

 

例如:

mysql>grant select,insert,update,delete,create,drop on vtdc.employee to jee@10.163.225.87 identified by ‘123′;

给来自10.163.225.87的用户jee分配可对数据库vtdc的employee表进行select,insert,update,delete,create,drop等操作的权限,并设定口令为123。

 

mysql>grant all privileges on vtdc.* to jee@10.10.10.87 identified by ‘123′;

给来自10.163.225.87的用户jee分配可对数据库vtdc所有表进行所有操作的权限,并设定口令为123。

 

mysql>grant all privileges on *.* to jee@10.10.10.87 identified by ‘123′;

给来自10.163.225.87的用户jee分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。

 

mysql>grant all privileges on *.* to jee@localhost identified by ‘123′;

给本机用户jee分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。

 

3.删除用户

 

@>mysql -u root -p

@>密码

mysql>DELETE FROM user WHERE User=”jeecn” and Host=”localhost”;

mysql>flush privileges;

//删除用户的数据库

mysql>drop database jeecnDB;

 

4.修改指定用户密码

 

@>mysql -u root -p

@>密码

mysql>update mysql.user set password=password(‘新密码’) where User=”jeecn” and Host=”localhost”;

mysql>flush privileges;

mysql>quit;

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