4 ways to change root password in Mysql

Original address: http://www.jb51.net/article/39454.htm Method 1: Use the SET PASSWORD command First log in to MySQL. 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 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. Open another DOS window (because the DOS window just now cannot be moved), and go to the mysql\bin directory.
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.

Already tried the 3rd way