存儲過程以獲取帶有計算數據列的分頁排序結果

Question

我想制作一個存儲過程以獲取分頁的排序結果，但這是一個難題。 我必須添加一列，並用計算/計算的數據填充它。 目前我有

ALTER proc [dbo].[pr_GetPagedSortedOrdersByUser]      
(
 @userid numeric(18,0),              
 @CurrentPage int,              
 @PageSize int,            
 @SortField varchar(200),            
 @SortOrder varchar(5),        
 @status varchar(50)        
)              
as              
begin              
with temp as              
  (              
   select * 
    ,ROW_NUMBER() OVER (order by            
        CASE WHEN @SortField = 'orderdate' AND @SortOrder = 'Desc' THEN orderdate END DESC,            
        CASE WHEN @SortField = 'orderdate' THEN orderdate END,      
        CASE WHEN @SortField = 'netamount' AND @SortOrder = 'Desc' THEN netamount END DESC,            
        CASE WHEN @SortField = 'netamount' THEN netamount END,      
        CASE WHEN @SortField = 'id' AND @SortOrder = 'Desc' THEN id END DESC,            
        CASE WHEN @SortField = 'id' THEN id END                       
       ) AS ROWID              
   from tbOrder    
   where (@status='All' or delivered=@status)and userid=@userid

  )              
  select * ,
  (
    netamount - discount
  ) as 'Gross'     
   from temp             
  where rowid>((@CurrentPage - 1) * @PageSize) and rowid <(@CurrentPage * @PageSize + 1)              

  select count(*) as [count]            
   from tbOrder    
   where (delivered=@status or @status='All')and userid=@userid       
end

注意：數據庫中不存在Gross列，我應該能夠將Gross值傳遞給@SortField

Answer 1

您應該只能夠將計算列添加到case語句中以對其進行排序：

select * 
    ,ROW_NUMBER() OVER (order by            
        CASE WHEN @SortField = 'orderdate' AND @SortOrder = 'Desc' THEN orderdate END DESC,            
        CASE WHEN @SortField = 'orderdate' THEN orderdate END,      
        CASE WHEN @SortField = 'netamount' AND @SortOrder = 'Desc' THEN netamount END DESC,            
        CASE WHEN @SortField = 'netamount' THEN netamount END,      
        CASE WHEN @SortField = 'id' AND @SortOrder = 'Desc' THEN id END DESC,            
        CASE WHEN @SortField = 'id' THEN id END,
        CASE WHEN @SortField = 'gross' AND @SortOrder = 'Desc' THEN netamount - discount END DESC,            
        CASE WHEN @SortField = 'gross' THEN netamount - discount END   
       ) AS ROWID              
   from tbOrder