小编ogi*_*ski的帖子

我创建而不是这样的触发器：

CREATE TRIGGER ReadOnlyEvent ON 
TableName INSTEAD OF INSERT, UPDATE, DELETE AS BEGIN 
RAISERROR('Tables are read only.', 16, 1 ) ROLLBACK TRANSACTION END;

该代码工作正常。但是当我将它与 'IF' 结合使用时，我得到了一个错误：

 IF OBJECT_ID ('ReadOnlyEvent', 'TR') IS NULL 
    CREATE TRIGGER ReadOnlyEvent ON
 TableName INSTEAD OF INSERT, UPDATE, DELETE AS BEGIN 
 RAISERROR('Tables are read only.', 16, 1 ) ROLLBACK TRANSACTION END;

关键字“TRIGGER”附近的语法不正确。

我也用 BEGIN END 尝试了 IF：

IF OBJECT_ID ('ReadOnlyEvent', 'TR') IS NULL
BEGIN
    CREATE TRIGGER ReadOnlyEvent ON
    TableName INSTEAD OF INSERT, UPDATE, DELETE AS BEGIN 
    RAISERROR('Tables …