CREATE ALGORITHM = UNDEFINED
DEFINER = `root`@`localhost`
SQL SECURITY DEFINER
VIEW girl_users_view AS
(SELECT g.id,g.age,g.size,g.city_type,g.`name`,u.username,u.nickname FROM users u INNER JOIN girl g ON g.id=u.id)
幾點說明（MySQL中的視圖在標准SQL的基礎之上做了擴展）：
ALGORITHM=UNDEFINED：指定視圖的處理算法；
DEFINER=`root`@`localhost`：指定視圖創建者；
SQL SECURITY DEFINER：指定視圖查詢數據時的安全驗證方式；
修改視圖
ALTER ALGORITHM = UNDEFINED
DEFINER = `root`@`localhost`
SQL SECURITY DEFINER
VIEW girl_users_view AS
(SELECT g.age,g.size,g.city_type,g.`name`,u.username,u.nickname FROM users u INNER JOIN girl g ON g.id=u.id)