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mysql用户修改密码,mysql修改密码

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Release: 2016-06-13 08:45:20
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mysql用户修改密码,mysql修改密码

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'); 

2:用mysqladmin 
格式:mysqladmin -u用户名 -p旧密码 password 新密码 

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; 

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。

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