"在下面給出的SQL語(yǔ)句中,()代碼會(huì)導(dǎo)致語(yǔ)句的失敗。 1 SELECT LastName,F(xiàn)irstName,Email 2 From Customers,EmailUsers 3 ON Customers.UserName=EmailUsers.UserName 4 ORDER BY LastName ASC"