Method 1: Log in to MySQL first with the SET PASSWORD command . Format: mysql> set password for username@localhost = password('new password'); Example: mysql> set password for root@localhost = password('123'); Method 2: Use mysqladmin format: mysqladmin -u username -p old password password New password example: mysqladmin -uroot -p123456 password 123 Method 3: Edit the user table directly with UPDATE First log in to MySQL. mysql> use mysql; mysql> update user set password=password('123') where user='root' and host='localhost'; mysql> flush privileges; Method 4: When you forget the root password, you can use windows like this For example: 1. Shut down the running MySQL service. 2. Open a DOS window and go to the mysql\bin directory. 3. Type mysqld --skip-grant-tables and press Enter. --skip-grant-tables means to skip permission table authentication when starting the MySQL service. 4.
5. Type mysql and press Enter. If successful, the MySQL prompt > will appear.
6. Connect to the permission database: use mysql; .
6. Change the password: update user set password=password("123") where user="root"; (don't forget to add a semicolon at the end).
7. Refresh privileges (required step): flush privileges; .
8. Exit quit.
9. Log out of the system, log in again, and log in with the username root and the new password 123 just set.