查詢總結銷售總額爲X個月指定的日期

Question

我想作出這樣的總結銷售的每個產品ID的總數爲一組幾個月的查詢（即五月 - 八月）

我想：

+------------+-------------------------+-------+--------------+-----------------+ 
| PRODUCT_ID |   ITEM   | PRICE | GROSS_MARGIN | Sum Of QUANTITY | 
+------------+-------------------------+-------+--------------+-----------------+ 
| 100-10  | ALVE laptop table  | 89 | 56%   |   23323 | 
| 100-15  | FREDRIK desk   | 129 | 44%   |   9614 | 
| 100-20  | GALANT conference table | 369 | 32%   |   10272 | 
+------------+-------------------------+-------+--------------+-----------------+ 

但我無法建立查詢要做到這一點，因爲我是很新的接入（真我第一次用它玩弄周圍）。

這就是我目前的查詢吐出：

+------------+--------------------------+---------+--------------+--------------------+----------+ 
| PRODUCT_ID |   ITEM   | PRICE | GROSS_MARGIN | TRANSDATE By Month | QUANTITY | 
+------------+--------------------------+---------+--------------+--------------------+----------+ 
| 100-10  | ALVE laptop table  | $89.00 | 56.00%  | August 2011  |  9679 | 
| 100-10  | ALVE laptop table  | $89.00 | 56.00%  | July 2011   |  9436 | 
| 100-10  | ALVE laptop table  | $89.00 | 56.00%  | June 2011   |  3222 | 
| 100-10  | ALVE laptop table  | $89.00 | 56.00%  | May 2011   |  986 | 
| 100-15  | FREDRIK desk    | $129.00 | 44.00%  | August 2011  |  3150 | 
| 100-15  | FREDRIK desk    | $129.00 | 44.00%  | July 2011   |  2695 | 
| 100-15  | FREDRIK desk    | $129.00 | 44.00%  | June 2011   |  3769 | 
| 100-20  | GALANT conference table | $369.00 | 32.00%  | August 2011  |  3814 | 
| 100-20  | GALANT conference table | $369.00 | 32.00%  | July 2011   |  4977 | 
| 100-20  | GALANT conference table | $369.00 | 32.00%  | June 2011   |  225 | 
| 100-20  | GALANT conference table | $369.00 | 32.00%  | May 2011   |  1256 | 
+------------+--------------------------+---------+--------------+--------------------+----------+ 

從本質上講，我想有一個行的總結該項目的這4個月的月均銷量（5月，包括每天的這個月）。如有必要，請忽略其他欄（價格&保證金）。

任何幫助將不勝感激，我需要在週五之前完成這項任務！ 已經玩了好幾個小時了，但是每次我走近一步，我似乎都會破壞一些東西。 ：'（

這裏是我當前的SQL語法/代碼（對不起，不知道正確的術語）

SELECT DISTINCTROW 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM, 
    PRODUCTS.PRICE, 
    PRODUCTS.GROSS_MARGIN, 
    Format$([SALES].[TRANSDATE],'mmmm yyyy') AS [TRANSDATE By Month], 
    Sum(SALES.QUANTITY) AS [Sum Of QUANTITY] 
FROM PRODUCTS INNER JOIN 
    SALES ON PRODUCTS.[PRODUCT_ID] = SALES.[PRODUCT_ID] 
GROUP BY 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM, 
    PRODUCTS.PRICE, 
    PRODUCTS.GROSS_MARGIN, 
    Format$([SALES].[TRANSDATE],'mmmm yyyy'), Year([SALES].[TRANSDATE])*12+DatePart('m',[SALES].[TRANSDATE])-1; 

這實際上目前顯示爲所有幾個月和幾年的所有數據（我有2年價值所有產品的數據）我只希望在一年的一年（2011年5月至8月）每個產品ID的總銷售額請幫助！

Answer 1

由於這是Access，SQL Fiddle只能是一個開始

您需要正確引用日期表達式：

SELECT 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM,  
    Sum(SALES.QUANTITY) AS [Sum Of QUANTITY] 
FROM 
    PRODUCTS INNER JOIN 
    SALES ON PRODUCTS.[PRODUCT_ID] = SALES.[PRODUCT_ID] 
WHERE 
    [SALES].[TRANSDATE] BETWEEN #2015-05-01# AND #2015-08-31# 
GROUP BY 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM 

修正學習網站

我失蹤，你的原始數據有日期2011年和2011年沒有我特此發佈更正SQL爲您測試非常抱歉：

SELECT 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM,  
    Sum(SALES.QUANTITY) AS [Sum Of QUANTITY] 
FROM 
    PRODUCTS INNER JOIN 
    SALES ON PRODUCTS.[PRODUCT_ID] = SALES.[PRODUCT_ID] 
WHERE 
    [SALES].[TRANSDATE] BETWEEN #2011-05-01# AND #2011-08-31# 
GROUP BY 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM 

這將從您的Access數據庫產生輸出。但是，與SQL提琴手一起使用，它將會有所不同：

SELECT 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM,  
    Sum(SALES.QUANTITY) AS [Sum Of QUANTITY] 
FROM 
    PRODUCTS INNER JOIN 
    SALES ON PRODUCTS.[PRODUCT_ID] = SALES.[PRODUCT_ID] 
WHERE 
    [SALES].[TRANSDATE] BETWEEN '2011-05-01' AND '2011-08-31' 
GROUP BY 
    PRODUCTS.PRODUCT_ID, 
    PRODUCTS.ITEM 

對不便。