Four methods of modifying MySQL password (suitable for beginners)

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As a beginner , about MySQL Password modification , At present, I know four methods ： The first three are to modify the password when you know it , Because we need to log in first ; The last one is suitable for modifying when you forget your password ！

Catalog

Method 1： use set password command  

Method 2： use mysqladmin 

Method 3： use update Direct editing user surface  

Method 4： Forget password handling

Conclusion

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Method 1： use set password command  

（1） First log in first MySQL：

（2） Change the password format to ：

set password for user name @localhost = password(' New password '); Don't forget the last semicolon , for example ： We changed the password to 123：

set password for [email protected] = password('123');

The following interface appears, indicating that the modification is successful ：

Method 2： use mysqladmin 

utilize mysqladmin, We don't need to log in first , But until the original password ; We can modify it directly , Change the password format to ：

mysqladmin -u user name -p Old password password New password , Be careful ,password There is no -  , for example ： Let's change the password to 123456：

mysqladmin -uroot -p123 password 123456

The following interface appears, indicating that the modification is successful

Method 3： use update Direct editing user surface  

（1） First log in first MySQL

（2） Then type in ：

use mysql #  Connect to permission database 
update user set password=password('521') where user='root' and host='localhost'; #  Change password 
flush privileges; #  Refresh the permissions 

The following interface appears, indicating that the modification is successful ： 

Method 4： Forget password handling

1. Close running MySQL service . 

win+r Input ：services.msc enter , find MySQL, Manually shut down MySQL service

2. open DOS window , utilize cd The order goes to mysql Of bin Catalog ： It is recommended to find mysql Of bin Enter... In the directory cmd enter
3. Input mysqld --skip-grant-tables enter .

--skip-grant-tables It means start-up MySQL Skip authority list authentication when serving . 

4. Open another one DOS window （ The one just now DOS The window can no longer move ）, go to mysql Of bin Catalog . 
5. Input mysql enter , If the above modification is successful , Will appear directly mysql> Such a prompt . 
6. Connect to permission database ： use mysql
6. Change password ：update user set password=password("123") where user="root";
7. Refresh the permissions （ Steps must be taken ）：flush privileges; ( Don't forget the semicolon )
8.exit perhaps ctrl+c sign out , Re login

Conclusion

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