Условная сумма в группе по запросу MSSQL

У меня есть таблица OrderDetails со следующей схемой:

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|  OrderId  |  CopyCost  |  FullPrice  |  Price  |  PriceType  |
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|  16       |  50        |  100        |  50     |  CopyCost   |
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|  16       |  50        |  100        |  100    |  FullPrice  |
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|  16       |  50        |  100        |  50     |  CopyCost   |
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|  16       |  50        |  100        |  50     |  CopyCost   |
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Мне нужен запрос, который предположит приведенную выше таблицу в новую таблицу со следующей схемой:

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|  OrderId  |  ItemCount  |  TotalCopyCost  |  TotalFullPrice  |
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|  16       |  4          |  150            |  100             |
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В настоящее время я использую группу By по Order.Id к счету элемента. Но я не знаю, как условно предположить значения CopyCost и FullPrice.

Любая помощь будет высоко оценена.

Отношения Фредди

Ответы

SELECT OrderId, 
       COUNT(*) ItemCount,
       SUM(CASE WHEN PriceType = 'CopyCost' THEN Price ELSE 0 END) TotalCopyCost,
       SUM(CASE WHEN PriceType = 'FullPrice' THEN Price ELSE 0 END) TotalFullPrice
  FROM OrderDetails
 GROUP BY OrderId

select 
   orderId, 
   count(*) as cnt, 
   sum(if(pricetype='CopyCost', CopyCost, 0)) as totalCopyCost,
   sum(if(pricetype='FullPrice', FullPrice, 0)) as totalFullPrice
from 
   tbl
group by 
   orderId

| ORDERID | CNT | TOTALCOPYCOST | TOTALFULLPRICE |
--------------------------------------------------
|      16 |   4 |           150 |            100 |

SELECT
  OrderId,
  Count(1) as ItemCount,
  SUM(CASE WHEN PriceType = 'CopyCost' 
        THEN CopyCost ELSE 0 END) AS TotalCopyCost,
  SUM(CASE WHEN PriceType = 'FullPrice' 
        THEN FullPrice ELSE 0 END) AS TotalFullPrice
FROM OrderDetails
GROUP BY OrderId

select A.OrderID, A.ItemCount,B.TotalCopyCost, C.TotalFullPrice
from (select OrderID, count(*) as ItemCount from orderdetails) as A,
(select OrderID, sum(CopyCost) as TotalCopyCost from orderdetails where PriceType = 'CopyCost') as B,
(select OrderID, sum(FullPrice) as TotalFullPrice from orderdetails where PriceType = 'FullPrice') as C
where A.OrderID = B.OrderID