如果你忘记了你的密码或者想把它改成你的MySQL:

Start your terminal and enter: sudo su Enter the password for you system Stop your MySQL server: sudo /usr/local/mysql/support-files/mysql.server stop Leave this window open, run second terminal window and enter here: mysql -u root And change your password for MySQL: UPDATE mysql.user SET authentication_string=PASSWORD('new_password') WHERE User='root'; where "new_password" - your new password. You don't need old password for MySQL. Flush, quit and check your new password: FLUSH PRIVILEGES; Close all windows and check your new password for MySQL.

如果您不记得设置的root密码，需要重置密码，请执行以下步骤:

Stop the mysqld server, this varies per install Run the server in safe mode with privilege bypass sudo mysqld_safe --skip-grant-tables; In a new window connect to the database, set a new password and flush the permissions & quit: mysql -u root For MySQL older than MySQL 5.7 use: UPDATE mysql.user SET Password=PASSWORD('your-password') WHERE User='root'; For MySQL 5.7+ use: USE mysql; UPDATE mysql.user SET authentication_string=PASSWORD("your-password") WHERE User='root'; Refresh and quit: FLUSH PRIVILEGES; \q Stop the safe mode server and start your regular server back. The new password should work now. It worked like a charm for me :)

Note

运行 更新mysql。SET authentication_string=null WHERE user ='root'; 如果您不想为root用户设置密码。或者PASSWORD()函数不适合您。

点击这里阅读更多。

截至2022年12月，以下适用于macOS Big Sur 11.2.3上的MySQL 8.0.26:

去系统首选> mysql >停止服务器 打开终端并运行:mysqld_safe——skip-grant-tables 打开一个新终端，运行:mysql -u root 运行:ALTER USER 'root'@'localhost' IDENTIFIED BY 'root'; ROOT将是您的新密码。 运行:FLUSH特权; 运行:退出 进入系统首选项> mysql >启动服务器

当您登录MySQL终端时，请尝试执行FLUSH PRIVILEGES命令。如果这不起作用，请在MySQL终端中尝试以下命令集

mysql -u root

mysql> USE mysql;
mysql> UPDATE user SET password=PASSWORD("NEWPASSWORD") WHERE User='root';
mysql> FLUSH PRIVILEGES;
mysql> quit

用你想要的任何密码更改NEWPASSWORD。应该都准备好了!

更新:从MySQL 5.7开始，密码字段被重命名为authentication_string。修改密码时，使用以下查询来修改密码。所有其他命令保持不变:

mysql> UPDATE user SET authentication_string=PASSWORD("NEWPASSWORD") WHERE User='root';

请不要使用MySQL 8.0+

mysql> UPDATE mysql.user SET authentication_string='password' WHERE User='root'; 

因为它覆盖了authentication_string，它应该是一个哈希而不是纯文本，而是使用:

mysql> `ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';` 

这就是对我有效的方法:

Make sure no other MySQL process is running. To check this do the following: From the terminal, run this command: lsof -i:3306 If any PID is returned, kill it using kill -9 PID Go to System Preferences → MySQL → check if any MySQL instances are running, stop them. Start MySQL with the command: sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables The password for every user is stored in the mysql.user table under columns User and authentication_string respectively. We can update the table as: UPDATE mysql.user SET authentication_string='your_password' where User='root'

在终端中，写入mysql -u root -p并点击Return。

输入您必须记下的当前MySQL密码。

并设置密码:

SET PASSWORD = PASSWORD('new_password');

更多细节请参考这里的文档。