1. 新增用户 Sql代码 mysql insert into mysql. user (Host, User , Password ) values ( localhost , lionbule , password ( hello1234 )); mysqlflush privileges ; 或者 CREATEUSER ' username'@'host 'IDENTIFIEDBY'password'; 例子:CREATEUSER'dog'@'lo
1. 新增用户
Sql代码
mysql>insert into mysql.user(Host,User,Password) values("localhost","lionbule",password("hello1234"));
mysql>flush privileges;
或者
CREATE USER'username'@'host' IDENTIFIED BY 'password';
例子: CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';
CREATE USER 'pig'@'192.168.1.101_' IDENDIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '';
CREATE USER 'pig'@'%';
2. 修改用户密码
Sql代码
mysql>update mysql.user set password=password('new password') where User="lionbule" and Host="localhost";
mysql>flush privileges;
或
a. 使用mysqladmin语法：mysqladmin -u用户名 -p旧密码 password 新密码
例如：mysqladmin -u root -p 123 password 456；
或者
SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');
如果是当前登陆用户用SET PASSWORD = PASSWORD("newpassword");
3. 删除用户
Sql代码
mysql>DELETE FROM user WHERE User="lionbule" and Host="localhost";
mysql>flush privileges;
或者
drop user username@'%'
drop user username@localhost
4. 权限分配
4.1. grant用法
grant 权限 on 数据库.* to 用户名@'登录主机' identified
by '密码'
Doc代码
权限：
常用总结, ALL/ALTER/CREATE/DROP/SELECT/UPDATE/DELETE
数据库：
*.* 表示所有库的所有表
test.* 表示test库的所有表
test.test_table 表示test库的test_table表
用户名：
mysql账户名
登陆主机：
允许登陆mysql server的客户端ip
'%'表示所有ip
'localhost' 表示本机
'192.168.10.2' 特定IP
密码：
账户对应的登陆密码
取消授权用户:
语法：REVOKE privilege ON databasename.tablename FROM 'username'@'host';
例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
REVOKE SELECT ON test.user FROM 'pig'@'%';
revoke all on *.* from sss@localhost ;
revoke all on user.* from 'admin'@'%';
SHOW GRANTS FOR 'pig'@'%'; //查看授权
取消授权用户:
语法：REVOKE privilege ON databasename.tablename FROM 'username'@'host';
例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
REVOKE SELECT ON test.user FROM 'pig'@'%';
revoke all on *.* from sss@localhost ;
revoke all on user.* from 'admin'@'%';
SHOW GRANTS FOR 'pig'@'%'; //查看授权
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