How to set a password for a user in a MySQL database

MySQL databaseSecurity issues have always been a hot topic, and the most direct protection method isSet PasswordTo ensure the data security of MySQL database users, you must set a password. Originally installed on the machineMysql databaseYou can access the database anonymously or enter the database as a root without a password. in addition, if you are an administrator, you need to establish and authorize some users, which also involves setting passwords. next we will discuss how to set a password:

First, we should know that password storage in the Mysql database must be encrypted using the password () function. because the user table stores passwords in encrypted form, rather than plain text. if you are not encrypted, execute the following statement in the database:

Use mysql

Insert into user (host, user, password) values ('%', 'user _ name', 'Your password ');

Flush privileges;

I believe the results will not satisfy you. because the server compares the encrypted value, the server connection may fail. note that flush privileges is used to reload the authorization table. you can also use mysqladmin-u root reload or mysqladmin-u root flush-privileges in shell to implement the reload authorization table.

In the Mysql environment, you can use the following statement to set the password:

1. insert into user (host, user, password) values ('%', 'user _ name', password ("your password ");

2. set password for user_name = password ("your password ")

The above two methods must be used to reload the authorization table.

3. Of course, you can set a password when creating a user. The grant statement will automatically encrypt the password for you.

For example, grant all on *. * to user_name @ % identified by "your password ";

In addition, you can use the mysqladmin program in the shell environment to set the password.

For example, mysqladmin-u root password "your password"

Follow the methods described above to set a password for a MySQL database user to ensure user security. I hope you can learn from the above.