我刚刚在Mac OS x上安装了MySQL,下一步是设置root用户密码,所以我接下来这样做:

启动终端应用程序以访问Unix命令行。 在Unix提示符下,我执行了以下命令: cd /usr/local/mysql/bin ./mysqladmin -u root password' password'

但是,当我执行命令时

./mysql -u root,这是答案:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 224
Server version: 5.5.13 MySQL Community Server (GPL)

Copyright (c) 2000, 2010, 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>

我不需要密码就能进入mysql命令行!

为什么会这样?


当前回答

要引用MySQL 8.0.15 +, password()函数不可用。使用下面的命令。

请使用

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

其他回答

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。

如果你忘记了MySQL的根密码,不记得或者想要闯入.....你可以在Linux或OS X的命令行中重置MySQL数据库密码,只要你知道你所在的机器的root用户密码:

(1)停止MySQL

sudo /usr/local/mysql/support-files/mysql.server stop

(2)安全模式启动:

sudo mysqld_safe --skip-grant-tables

(3)这将是一个持续的命令,直到进程结束,所以打开另一个shell/终端窗口,登录没有密码:

mysql -u root

UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root';

在上面的UPDATE命令中,只需将'password'替换为您自己的新密码,请确保保留引号

(4)节省和安静

FLUSH PRIVILEGES;

\q

启动MySQL

sudo /usr/local/mysql/support-files/mysql.server start
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。

现有答案中提到的方法不适用于MySQL 5.7.6或更高版本。根据MySQL文档,这是推荐的方法。

B.5.3.2.3重置Root用户密码:通用说明

MySQL 5.7.6及以上版本:

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

参考:https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html

$ 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。