mysql的一些用法

未设置密码:mysql -u root
若已经设置:mysql -u root -p
use mysql;
UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
FLUSH PRIVILEGES;

use mysql;
insert into user(Host,User,Password) values('%','username',password('userpasswd'));
FLUSH PRIVILEGES;

CREATE DATABASE IF NOT EXISTS yourdbname DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

grant all privileges on *.* to 'user'@'host';

revoke all privileges on *.* from 'user'@'host';

grant select on databasename.tablename to 'user'@'host';

revoke select on databasename.tablename from 'user'@'host';