假如有两个表,t1和t2,两个表字段相同,都是有一个id(标识,自动+1),和一个varchar类型的content两个字段。现在要实现t2作为t1的备份,对t1的所有修改(增、删、改)都要对t2同时生效。请看程序:
CREATE TRIGGER t1tot2 ON t1
FOR INSERT,DELETE
AS
delete t2 where [id] in (select [id] from deleted)
insert into t2 ([content]) select [content] from inserted
GO
这个触发器,即可保证同步两个表的内容。
要饭二维码
