我有一个名为PaperInfo的表,表中的示例数据是:
PaperID Type Description
1 T Level 1
2 S Level 2
3 V Level 3
如何在没有人可以从上表中删除记录的情况下强制执行触发器。当某人试图删除它时,例如如下:
Delete from dbo.paperInfo
WHERE PaperID = 1
它应显示错误消息“无法从Paperinfo表中删除记录”
我该怎么办?
答案 0 :(得分:2)
你应该写一个INSTEAD OF
触发器。这将取代删除操作:
CREATE TRIGGER td_PaperInfo
ON PaperInfo
INSTEAD OF DELETE
AS
BEGIN
RAISERROR ('Cannot Delete Records from Paperinfo Table', 16, 1)
END