Database------root account password is lost and retrieved

Lost root password recovery method

• 1. close the mysql service

net stop mysql

• 2. In administrator mode, enter the command

mysqld  --shared-memory --skip-grant-tables  --console

Note: This command will not end, do not close the window, open a new command window to continue

• 3. Open the command prompt and directly use root to connect to the database (no password required)

mysql -uroot 

• 4. Set the root account password in the mysql.user table to an empty string

update mysql.user set authentication_string = '' where user = 'root' ;

• 5. Refresh permissions (this step is not necessary, and can also be solved by restarting the database)

flush privileges ;

• 6. close 步骤 2open window

CTRL + C 强制中断服务，并关闭窗口 （也可以直接关闭窗口）

• 7. Open the task manager CTRL + SHIFT + ESC, find mysqld in the process, if there is, end the process

This step is mainly to prevent the mysqld service not being closed in step 6

• 8. Restart the MySQL service

net start mysql

• 9. Link MySQL service

-- 在步骤4 中，已经将密码设置为 空
mysql -uroot 

• 10. reset root password

alter user root@'%' identified by '新密码' ;

• 11. Refresh permissions

-- 或者重启MySQL服务
flush privileges ;