创建触发器之后对象名无效

create trigger upstudentid
on StudentInfo
for update
As
if update(StudentID)
begin update StudentScore Set StudentID=i.StudentID
           From StudentScore ss , Deleted   d ,Inserted i     
           Where ss.StudentID=d.StudentID
       end 

这一个触发器创建之后打开看触发器就提示[dbo].[upstudentid]对象名无效
创建了其他类型的触发器打开也是提示对象名无效
另外求解
插入信息到A表，，A表有Name列，触发插入姓名到B表Name列怎么写

[解决办法]

create trigger upstudentid on StudentInfo after update
As
BEGIN

if update(StudentID)  
   begin
 update StudentScore Set StudentID=i.StudentID         
       From StudentScore ss , Deleted   d ,Inserted i   
          Where ss.StudentID=d.StudentID      
 end  

END

go

create trigger tri_ins_a on A after insert,UPDATE
As
BEGIN

if update(NAME)  
   begin

INSERT INTO B(NAME)
SELECT NAME FROM Inserted i   

 end  

END

[解决办法]
如果建完触发器后，有对StudentInfo表drop掉重建，触发器也会被drop掉，需重建

关于触发器，可以参考一下海爷以前的一个帖子和博文

触发器综述
[解决办法]

if OBJECT_ID('table_Name1', 'u') is not null
drop table table_Name1
Create Table table_Name1
(
  OID int identity(1, 1) primary key not null,
  Name varchar(128) not null
)

if OBJECT_ID('table_Name2', 'u') is not null
drop table table_Name2
Create table table_Name2
(
 OID int identity(1, 1) primary key not null,
 Name1 varchar(128) not null
)

Create trigger InsertName on table_Name1
after Insert 
as Insert into table_Name2(Name1) Select Name from Inserted