创建触发器； DECLARE 附近的语法不正确

Question

这是我的代码：

CREATE TRIGGER trg_Booking
ON Bookings
FOR INSERT, UPDATE

DECLARE @bef AS varchar(25)

SELECT @bef = Role
FROM Inserted, booksys.dbo.Employees
WHERE Inserted.EmployeeNo = Employees.EmployeeNo

IF NOT (@bef = 'Foreman')

BEGIN 
    RAISERROR ('Only a Foreman can do that!',16,1)
    ROLLBACK TRANSACTION
END

我在尝试执行和创建触发器时不断收到错误消息； “消息 156，级别 15，状态 1，过程 trg_booking，第 5 行关键字 'DECLARE'."

附近的语法不正确

此外，SQL服务器似乎无法识别对象"Inserted"?

我正在使用 SQL Server 2014 和 Management Studio。

Answer 1

您在 FOR INSERT, UPDATE

之后错过了 As

如果您在 trigger 中有多个语句，请始终使用 Begin and END

CREATE TRIGGER booksys.dbo.trg_Booking
ON booksys.dbo.Bookings
FOR INSERT, UPDATE
as
Begin

IF Not exists ( SELECT 1 
FROM Inserted Inner Join booksys.dbo.Employees
on Inserted.EmployeeNo = Employees.EmployeeNo
where Role='Foreman')

BEGIN 
    RAISERROR ('Only a Foreman can do that!',16,1)
    ROLLBACK TRANSACTION
END
END

创建触发器； DECLARE 附近的语法不正确

CREATE TRIGGER; Incorrect syntax near DECLARE

sql-server

syntax

triggers

declare