如果你想允许用户myuser从ip为192.168.1.3的主机连接到mysql服务器，并使用mypassword作为密码应当执行的命令是：

AGRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘192.168.1.3‘ IDENTIFIED BY ‘mypassword’ WITH GRANT OPTION

BGRANT ALL PRIVILEGES ON @.@ TO ‘myuser‘@‘192.168.1.3‘ IDENTIFIED BY ‘mypassword’ WITH GRANT OPTION

CGRANT ALL PRIVILEGES ON %.% TO ‘myuser‘@‘192.168.1.3‘ IDENTIFIED BY ‘mypassword’ WITH GRANT OPTION

DGRANT ALL PRIVILEGES ON . TO ‘myuser‘@‘192.168.1.3‘ IDENTIFIED BY ‘mypassword’ WITH GRANT OPTION