在PIVOT

Question

中分組中的子集值請考慮此場景：

我們有存儲訂單規格的訂單表。其中一個規格是貨幣。我在該表中有幾種貨幣，如美元，歐元，英鎊，日元，迪拉姆，里亞爾，盧比。 美元，歐元，英鎊是主要貨幣。我想在我的查詢中將其他人分組在1組中。我如何使用PIVOT命令做到這一點？

我想創建這樣這樣的結果：

ProductCategory  Dollar  Euro  Pound  Others 
--------------------------------------------------------------- 
P1      1000  2000  500  880 
P2      1200  100   200  750 
P3      1900  8000  700  640 
P4      1500  500   1000  270 
P5      2000  1700  1200  1000 

感謝

---

更新1）

我的源表是這樣的：

ProductCategory Currency  Amount  
---------------------------------------- 
P1    Dollar  100   
P2    Euro   500  
P3    Dollar  100  
P4    Yen   200  
P1    Dollar  100  
P3    Rupee  50   
... 

---

更新2）

declare @tbl table 
(
    Product nvarchar(50), 
    Cur  nvarchar(50), 
    Amount int 
) 


insert into @tbl values 
('p1', 'dollar',100), 
('p2', 'euro',100), 
('p3', 'pound',100), 
('p1', 'a',100), 
('p1', 'b',100), 
('p2', 'c',100), 
('p3', 'dollar',100), 
('p3', 'euro',100), 
('p2', 'euro',100), 
('p2', 'euro',100), 
('p1', 'j',100) 


SELECT pv.Product 
    ,ISNULL(pv.Dollar,0) AS [Dollar] 
    ,ISNULL(pv.Euro,0) AS [Euro] 
    ,ISNULL(pv.Pound,0) AS [Pound] 
    ,ISNULL(pv.Other,0) AS [Other] 
FROM (
SELECT * 
    ,CASE 
     WHEN [Cur] NOT IN ('dollar','euro','pound') THEN 'Other' 
     ELSE [Cur] 
    END AS [newCurrency] 
FROM @tbl 
)as a 
PIVOT (
    SUM([Amount]) 
    FOR [newCurrency] IN ([dollar],[euro],[pound],[Other]) 
)as pv 

，並得到這樣的結果：

Answer 1

你是幾乎沒有。在更新2中稍微修改了您的查詢。我認爲這是您想要的。

declare @tbl table 
(
    Product nvarchar(50), 
    Cur  nvarchar(50), 
    Amount int 
) 

insert into @tbl values 
('p1', 'dollar',100), 
('p2', 'euro',100), 
('p3', 'pound',100), 
('p1', 'a',100), 
('p1', 'b',100), 
('p2', 'c',100), 
('p3', 'dollar',100), 
('p3', 'euro',100), 
('p2', 'euro',100), 
('p2', 'euro',100), 
('p1', 'j',100) 

SELECT pv.Product 
    ,sum(ISNULL(pv.Dollar,0)) AS [Dollar] 
    ,sum(ISNULL(pv.Euro,0)) AS [Euro] 
    ,sum(ISNULL(pv.Pound,0)) AS [Pound] 
    ,sum(ISNULL(pv.Other,0)) AS [Other] 
FROM (
SELECT * 
    ,CASE 
     WHEN [Cur] NOT IN ('dollar','euro','pound') THEN 'Other' 
     ELSE [Cur] 
    END AS [newCurrency] 
FROM @tbl 
)as a 
PIVOT (
    SUM([Amount]) 
    FOR [newCurrency] IN ([dollar],[euro],[pound],[Other]) 
)as pv 
group by product 

Answer 2

嘗試此查詢，您能不能總結基於產品的其他貨幣。

select productCategory, 
     sum(dollar), 
     sum(euro), 
     sum(pound), 
     sum(others) 
from order 
group by productCategory 

希望它能幫上忙。

Answer 3

嘗試此查詢

SELECT pv.ProductCategory 
    ,ISNULL(pv.Dollar,0) AS [Dollar] 
    ,ISNULL(pv.Euro,0) AS [Euro] 
    ,ISNULL(pv.Pound,0) AS [Pound] 
    ,ISNULL(pv.Other,0) AS [Other] 
FROM (
    SELECT * 
     ,CASE 
      WHEN [Currency] NOT IN ('Dollar','Euro','Pound') THEN 'Other' 
      ELSE [Currency] 
     END AS [newCurrency] 
    FROM #tmp 
)as a 
PIVOT (
    MAX([Amount]) 
    FOR [newCurrency] IN ([Dollar],[Euro],[Pound],[Other]) 
)as pv