相关疑难解决方法(0)

有吗？我正在研究一些存储过程,在一个地方我找到了以下行:

DELETE BI_Appointments
WHERE VisitType != (
    SELECT TOP 1 CheckupType
    FROM BI_Settings
    WHERE DoctorName = @DoctorName)

这会做同样的事情:

DELETE FROM BI_Appointments
WHERE VisitType != (
    SELECT TOP 1 CheckupType
    FROM BI_Settings
    WHERE DoctorName = @DoctorName)

或者是语法错误,还是完全不同的东西？