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博客园 - CalvinChu

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mysql忘记root密码解决办法
CalvinChu · 2019-10-22 · via 博客园 - CalvinChu

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; 
二、无法登录的修改方式,限于有权限修改mysql安装文件(此方法适用于linux)
方法4:在忘记root密码的时候,可以这样 
以windows为例: 
1.进入mysql安装目录,打开my.ini文件

2.找到[mysqld]配置行(注意,不是[mysql]),在其下一行输入:skip-grant-tables(或者:--skip-grant-tables,两者区别是有时两个横线会导致服务无法重启需要测试应当添加否。)

3.cmd命令:services.msc,找到mysql服务并重启(使修改的配置文件生效)

4.mysql命令行:use mysql(进入系统配置库)

5.mysql命令行:update user set password=password("123") where user="root";(别忘了最后加分号,分号意味着命令的结束) 

6.mysql命令行:flush privileges;(刷新缓存,更新数据库读取的密码别忘了最后加分号,分号意味着命令的结束)

7.退出mysql,或重启服务,密码设置成功。