Shulou(Shulou.com)06/01 Report--

Mysql5.7 version:

Method 1: use the SET PASSWORD command

Format: mysql > set password for username @ localhost = password ('new password')

Example: mysql > set password for root@localhost = password ('123')

Mysql5.7 and mysql8.0 and above can be used

Method 2: use mysqladmin

Format: mysqladmin-u username-p password new password

Example: mysqladmin-uroot-p password 123

Mysql5.7 version

Method 3: edit the user table directly with UPDATE

Mysql > use mysql; mysql > update user set password=password ('123') where user='root' and host='localhost'; mysql > flush privileges

Mysql 5.7and mysql8.0 and above

Method 4: use alter, there is a hole in this, and many bloggers say they can modify it in the following ways, but it has not been successful:

Alter user 'root'@'localhost' IDENTIFIED BY' liuhehe'

Error report:

ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'localhost'

Later, when I looked up the record of user='root' in the user table, I found that the value of the host column was'%'. Modify the above sql to

Mysql > alter user 'root'@'%' IDENTIFIED BY' liuhehe';Query OK, 0 rows affected (0.03 sec)

Successful execution!

The following methods are for the mysql5.7 version only

Method 4: when you forget your root password

Take windows as an example:

1. Shut down the running MySQL service.

two。 Open the DOS window and change to the mysql\ bin directory.

3. Enter mysqld-- skip-grant-tables enter. Skip-grant-tables means to skip authorization table authentication when starting the MySQL service.

4. Open another DOS window (because the DOS window just now cannot be moved), and change to the mysql\ bin directory.

5. Enter mysql enter, and if successful, the MySQL prompt > will appear.

6. Connect permissions database: use mysql;.

6. Change the password: update user set password=password ("123") where user=" root "; (don't forget to add the semicolon at last).

7. Refresh permissions (required): flush privileges;.

8. Exit quit.

9. Log out of the system, enter again, and log in with the user name root and the new password 123 you just set.

Note: the password field is no longer available in the mysql database in version 5.7, and the password field has been changed to

Authentication_string .

Summary

The above is a summary of the method of changing the root password in mysql5.7 and mysql 8.0 version introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave a message for me, and the editor will reply to you in time. Thank you very much for your support to the website!

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