MySQL User and Rights management

Format: Grant Select on database. * To User name @ login host identified by "password"

1, add a user test1 password for ABC, so that he can log on any host, and all databases have query, insert, modify, delete permissions. First connect to MySQL with the root user, and then type the following command:
Grant Select,insert,update,delete on * * to [[email protected] '%][email protected] '%[/email] ' identified by ' ABC ';

But the added user is very dangerous, you want to like someone to know test1 password, then he can be on any computer on the Internet to log into your MySQL database and your data can do whatever you like, solution see 2.

2, add a user test2 password for ABC, so that he can only login on localhost, and the database mydb can query, insert, modify, delete operations (localhost refers to the local host, that is, the MySQL database host), This allows the user to use a password that knows test2, and he cannot access the database directly from the Internet, but only through a Web page on the MySQL host.
Grant Select,insert,update,delete on mydb.* to [[E-mail Protected]][email protected][/email] identified by "ABC";

If you do not want to test2 have a password, you can call another command to erase the password.
Grant Select,insert,update,delete on mydb.* to [[E-mail Protected]][email protected][/email] identified by "";

MySQL User and Rights management