Declare @Id varchar(20)
　　Declare @Name varchar(20)
　　Declare Cur Cursor For
　　select substring(id,0,7) as id,name from temp1
　　Open Cur
　　Fetch next From Cur Into @Id,@Name
　　While @@fetch_status=0
　　Begin
　　Update temp Set [c3]=@Name where [id] like @Id+'%'
　　Fetch Next From Cur Into @Id,@Name
　　End
　　Close Cur
　　Deallocate Cur