Question

我有一张桌子，我想要a型的统计价格，输入c作为卖出，输入b，然后按日期输入d作为买入，结果如

 Table :
   | Name |   type  |   price  |   day       |
   | n1   |   a     |     1    |2013-10-10   |
   | n2   |   b     |     2    |2013-10-10   |
   | n3   |   c     |     3    |2013-10-10   |
   | n4   |   d     |     4    |2013-10-10   |
   | n1   |   a     |     5    |2013-11-10   |
   | n2   |   b     |     6    |2013-11-10   |
   | n3   |   c     |     7    |2013-11-10   |
   | n4   |   d     |     8    |2013-11-10   |

我想要这样的结果

|  DAY       |    SELL (price a+price c)   |   BUY (price b +price d) |
|2013-10-10  |       4                     |         6                |
|2013-11-10  |       12                    |         14               |

这是我的代码

ALTER proc [dbo].[sp_mysp]
@starttime datetime,
 @endtime datetime  
 as
   DECLARE @TIME DATETIME
   SET @TIME=@ENDTIME-@STARTTIME 
   SELECT  (table.day) AS DAY ,  case BUY
   WHEN TABLE.TYPE ='a' or TABLE.TYPE = 'c' THEN SUM (price) end,
   CASE SELL 
   WHEN TABLE.TYPE = 'b' or TABLE.TYPE = 'd' THEN SUM (price) end,

      FROM TABLE WHERE TABLE.DAY>@starttime AND TABLE.TIME<@ENDTIME
      order by TABLE.DAY


GO

我不能总和（输入a和类型c），总和（类型b和类型d）如我所愿，它只能通过类型a与a，b和b相加...... 我得到的结果像

 |  DAY       |    SELL (price a+price c)   |   BUY (price b +price d) | 
 | 2013-10-10 |         1                   |       NULL               |
 | 2013-10-10 |         3                   |       NULL               |
 | 2013-10-10 |         NULL                |       2                  |
 | 2013-10-10 |         NULL                |       4                  |
 | 2013-11-10 |         5                   |       NULL               |
 | 2013-11-10 |         7                   |       NULL               |
 | 2013-11-10 |        NULL                 |       6                  |
 | 2013-11-10 |        NULL                 |       8                  |

对我来说有什么意义吗？对不起我可怕的英语。

Answer 1

尝试

我没有在你的表中看到时间，但我猜DAY列是日期格式

ALTER proc [dbo].[sp_mysp]
@starttime datetime,
 @endtime datetime  
 as     
SELECT [Day],
        SUM(CASE WHEN [Type] = 'a' OR [Type] = 'c' THEN price ELSE 0.00 END) SELL,
        SUM(CASE WHEN [Type] = 'b' OR [Type] = 'd' THEN price ELSE 0.00 END) BUY
FROM    [TABLE]
WHERE   [Day] BETWEEN @starttime AND @endtime
GROUP BY    [Day]

Answer 2

我认为你的

TABLE.TYPE ='a' or TABLE.TYPE = 'c'

应该是

TABLE.TYPE ='a' AND TABLE.TYPE = 'c'

这样，它只会归结为IF都是你需要的。

SUM所有字段都具有相同的类型值sql server

2 个答案: