操作Ms Sql触发器的insert,update,delete

/ 触发器添加到多个表
CREATE TRIGGER [TRIGGER_insert] ON [dbo].[company] 
FOR INSERT
AS
insert Company_Del
select top 1 * from company order by id desc

/ 触发器删除多个表
CREATE TRIGGER [TRIGGER_Del] ON [dbo].[Dv_User] 
FOR delete
AS
    Delete Dv_Boke_User 
    From Dv_Boke_User br , Deleted  d
    Where br.UserName=d.UserName

/ 触发器修改多个表
CREATE TRIGGER [TRIGGER_Update] ON [dbo].[Dv_User] 
FOR UPDATE
AS
    if Update(UserName)
    begin

    Update br 
      Set br.UserName=i.UserName
      From Dv_Boke_User br , Deleted d ,Inserted i 
      Where br.UserName=d.UserName

    end