[SQL]触发器把自增ID的值赋值给另外一个字段

ALTER TRIGGER test_Rate  ON dbo.tRate
FOR insert
AS
declare  @errno   int,  @errmsg  varchar()
 begin
UPDATE dbo.tRate
SET vcUpdaterId=Inserted.iAutoId
FROM  dbo.tRate, inserted
WHERE dbo.tRate.iAutoId= inserted .iAutoId
  end
return
error:
    raiserror @errno @errmsg
    rollback transaction