How to check password in mysql

In MySQL, sometimes we need to view the password of a certain user, such as when debugging or changing the password. However, MySQL itself does not store the password as plain text. Instead, it encrypts the password and stores it in the MySQL table. Therefore, we cannot directly view the password of the MySQL user, but we can achieve it through the following methods.

1. Use the MySQL command line to view passwords

The MySQL command line tool provides a SHOW command that can list the authorization information of a user, including the encryption result of the password. Therefore, we can view the password through the following steps:

1. Log in to the MySQL client:

mysql -u root -p

2. Select the database where the user needs to be viewed:

use mysql;

3. Run SHOW GRANTS command to view the user's authorization information and password:

SHOW GRANTS FOR '用户名'@'localhost';

If the user has multiple authorizations, you can use the following command to view the information of these authorizations:

SHOW GRANTS FOR '用户名'@'localhost'\G;

The above command will display each The authorization is on a separate line so we can see it easily. Among them, the encrypted password is usually displayed as a string similar to the following:

IDENTIFIED BY PASSWORD '*90E462C37378CED12064BB338882F3B63F8093CA'

This is the encryption result of the user's password. We cannot restore the original password through this string.

2. Use MySQL Workbench to view the password

In addition to the command line, we can also use MySQL Workbench to view the password of the MySQL user. MySQL Workbench is an officially provided GUI tool that can help us manage MySQL databases.

1. Open the MySQL Workbench client and select the connection whose password needs to be viewed:

2. Select "Manage Users and Permissions" and select the user whose password needs to be viewed in the pop-up dialog box:

3. In the user dialog box, select the "Details" tab:

Here, we can see all relevant information about the user, including the encryption result of the password. Likewise, we cannot recover the original password from here.

Summary

MySQL is a secure database management system that does not store passwords in the system in clear text, but encrypts them. Therefore, we need to use specific command line or GUI tools to get the encryption result of the password. Although we cannot restore the original password from this result, we can operate MySQL by the following means:

• Modify the existing password
• Reset the forgotten password
• Create a new user

Therefore, when we need to operate the password, we do not have to check the original password, but should use the officially provided tools to operate.

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