windows下修改mysql忘记的密码

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一、忘记密码的情况

1、确定mysql服务已经停掉

2.打开命令行,转到mysql的bin目录下;

命令如下:

C:\Users\Administrator>cd C:\Program Files\MySQL\MySQL Server 5.5\bin

C:\Program Files\MySQL\MySQL Server 5.5\bin>


3.输入:mysqld -nt --skip-grant-tables 
然后回车,如果没有错误信息,就行了;
注:skip-grant-tables参数用了之后,就可以跳过登录校验; 

命令如下:

C:\Program Files\MySQL\MySQL Server 5.5\bin>mysqld -nt --skip-grant-tables
140317 13:23:11 [Warning] option 'new': boolean value 't' wasn't recognized. Set
 to OFF.

4.再打开一个命令行(因为刚才那个DOS窗口已经不能动了),同样转到mysql的bin目录下; 
5.直接输入 mysql 并回车,如果成功,将出现MySQL提示符 >

命令如下:

C:\Users\Administrator>cd C:\Program Files\MySQL\MySQL Server 5.5\bin

C:\Program Files\MySQL\MySQL Server 5.5\bin>mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.35 MySQL Community Server (GPL)

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

6.切换到mysql表

命令如下:

mysql>USE mysql;

7.可以修改密码了,命令如下

UPDATE user SET password=PASSWORD("123456") WHERE user="root";

8.刷新权限,不要忘记了,命令如下:

mysql>FLUSH PRIVILEGES;

二、用户在记得密码的情况下修改密码

以root用户登录,命令:mysql -uroot -p 回车 输入密码;mysql>use mysql;mysql>UPDATE user SET password=PASSWORD('输入新密码') WHERE user='root';mysql>FLUSH PRIVILEGES;


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