mysqld_safe --skip-grant-tables
mysql -u root
UPDATE mysql.user SET authentication_string='yourpasswd' WHERE User='root';
FLUSH PRIVILEGES;
ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';

每次我的MacBook重启时，我都需要这样做。

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。

$ export PATH=$PATH:/usr/local/mysql/bin

now,to make this permanent:
$ echo 'export PATH=$PATH:/usr/local/mysql/bin' >> ~/.bash_profile

next, start mysql in safe mode:
$ sudo mysqld_safe --skip-grant-tables;

If this does not work, go to System Preferences and stop MySQL server.
next, On the **other** terminal, you may use the below:

$ mysql -u root

mysql> USE mysql;

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

mysql> FLUSH PRIVILEGES;

mysql> exit;

$ mysql -u root
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH 
caching_sha2_password BY 'yourpassword';

$ mysql -u root -p
Enter password: 
mysql> SELECT user();

next, start the mysql server in normal mode. and you're done with resetting your root password. this worked for mysql 8.0.17 ver. for me.
thanks to everyone on top, https://stackoverflow.com/questions/36099028/error-1064-42000-you-have-an-error-in-your-sql-syntax-want-to-configure-a-pa,

https://www.houseninetytwo.com/how-to-use-mysql-in-terminal-on-mac-os-high-sierra/: ~:文本=你% 5月20日% 20 % 20了% 20,% 2 fmysql % 2 fbin % 2 fmysql。= % 20应该% 20执行% 20 % 20对,返回% 20 % 20版本% % 20 mysql中的20个。

如果你不记得密码，@radtek的答案对我来说是有效的，除了在我的情况下，我已经使用brew设置了MySQL，这意味着他的答案的第1步和第2步必须更改为:

/usr/local/bin/mysql.服务器停止 /usr/local/bin/mysqld_safe——skip-grant-tables

注意:缺少sudo。

当我安装OS X v10.10 (Yosemite)时，MySQL出现了一个问题。我试了很多方法，但都没用。其实我找到了一个很简单的方法。试试这个。

首先以超级用户(su)权限登录到终端。 sudo苏 停止MySQL sudo /usr/local/mysql/support-files / mysql。服务器停止 安全模式启动: Sudo mysqld_safe——skip-grant-tables 打开另一台终端，以su权限登录，然后无需密码登录MySQL客户端(MySQL) Mysql -u root 修改密码 更新mysql。SET Password ('new_password') WHERE user ='root'; 冲洗的特权 冲洗特权; 现在你完成了。

一旦你安装了MySQL，你需要建立“根”密码。如果您没有设置根密码，那么就没有根密码，您也不需要密码来登录。

因此，话虽如此，您需要建立一个根密码。

使用终端输入如下:

安装:设置root用户密码:

/usr/local/mysql/bin/mysqladmin -u root password NEW_PASSWORD_HERE

如果你犯了一个错误，或者需要修改root密码，请使用以下方法:

修改root密码:

cd /usr/local/mysql/bin/
./mysql -u root -p
> Enter password: [type old password invisibly]

use mysql;
update user set password=PASSWORD("NEW_PASSWORD_HERE") where User='root';
flush privileges;
quit