MySQL user permissions

1.1 Sign in MYSQL：

@>mysql -u root -p

@> password

1.2 Create user ：
Format :grant select on database .* to user name @ Log on to the host identified by ‘ password ’
　　 give an example :
　　　　 example 1: Add a user test1 The password for abc, Let him log on to any host , And for all databases
　　　　 Inquire about 、 Insert 、 modify 、 Delete permissions . First of all, it is used to root User connection MySQL, Then type the following command :
　　　　　　grant select,insert,update,delete on . to [email protected] identified by ‘mysql’;
　　　　　　grant select,insert,update,delete on test_p.* to 'qz1997'@'%' identified by 'qz1997';
　　　　 perhaps
　　　　　　grant all privileges on . to [email protected] identified by ‘mysql’;
　　　　 Then refresh the permission settings .
　　　　　　flush privileges;

example 2: If you don't want to root There is a password to operate the database “mydb” The data table in , You can type another command to erase the password .
　　　　　　grant select,insert,update,delete on mydb.* to [email protected] identified by ‘’;
　
　　# Be careful ： Here "localhost", It means that the user can only log in locally , Can't log in remotely on another machine .
　　 If you want to log in remotely , take "localhost" Change it to "%",
　　 It means that you can log in to any computer . You can also specify that a machine can log in remotely .