Home Database Mysql Tutorial MySQL修改root密码的4种方法

MySQL修改root密码的4种方法

Jun 07, 2016 pm 03:52 PM
mysql password

方法1: 用SET PASSWORD命令  

首先登录MySQL。  
格式:mysql> set password for 用户名@localhost = password(‘新密码’);  
例子:mysql> set password for root@localhost = password(‘123’);

方法2:用mysqladmin  
格式:mysqladmin -u用户名 -p旧密码 password 新密码  
例子:mysqladmin -uroot -p123456 password 123

方法3:用UPDATE直接编辑user表  
首先登录MySQL。  
mysql> use mysql;  
mysql> update user set password=password(‘123’) where user=’root’ and host=’localhost’;  
mysql> flush privileges;

方法4:在忘记root密码的时候,可以这样  
以windows为例:  
1. 关闭正在运行的MySQL服务。  
2. 打开DOS窗口,转到mysql\bin目录。  
3. 输入mysqld –skip-grant-tables 回车。–skip-grant-tables 的意思是启动MySQL服务的时候跳过权限表认证。  
4. 再开一个DOS窗口(因为刚才那个DOS窗口已经不能动了),转到mysql\bin目录。  
5. 输入mysql回车,如果成功,将出现MySQL提示符 >。  
6. 连接权限数据库: use mysql; 。  
6. 改密码:update user set password=password(“123”) where user=”root”;(别忘了最后加分号) 。  
7. 刷新权限(必须步骤):flush privileges; 。  
8. 退出 quit。  
9. 注销系统,再进入,使用用户名root和刚才设置的新密码123登录。

更多相关文章请访问   MySQL视频教程

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