在同一张桌子上更新和更新后未更新的内容？

Question

我有两个触发器之一是Instead of update和其他是after update在同一个表上相同的任务，但在更新后，而不是触发器被激发，而如果我有两个触发后，然后两个都触发更新。这是什么原因？

create trigger tr_tmp_instead on emp 
Instead of update 
as 
begin 
declare @name varchar(50),@message varchar(200)='Updated name Entered Successfully'; 
select @name=d.name from inserted d; 
insert into tmp_Instead values(getdate(),@message,@name) 
Print 'Trigger Fired, Updated name Entered Successfully Into tmp_Instead Table..' 

end 


create trigger tr_tmp on emp 
after update 
as 
begin 
declare @name varchar(50),@message varchar(200)='Updated name Entered Successfully'; 
select @name=d.name from inserted d; 
insert into tmp values(getdate(),@message,@name) 
Print 'Trigger Fired, Updated name Entered Successfully Into tmp Table..' 
end 

Answer 1

INSTEAD OF触发器将覆盖它在其上定义的默认操作。

当您致电UPDATE对emp，没有实际更新发生emp和AFTER UPDATE ON emp永远不会触发。