сводный дисплей для нескольких таблиц

Question

У меня есть этот код

SELECT
    StockItem.ItemTitle,
    StockItem.ItemNumber,
    ProductCategories.CategoryName,
    StockItem.ItemDescription,
    PurchaseItem.Quantity AS QuantityOrdered,
    Purchase.DateOfPurchase,
    Purchase.DateOfDelivery,
    Purchase.ExternalInvoiceNumber as PONumber,
    Purchase.QuotedDeliveryDate,
    StockLevel.Quantity AS CurrentQuantity,
    StockLevel.OnOrder,
    StockLevel.MinimumLevel
FROM dbo.PurchaseItem
INNER JOIN dbo.Purchase
    ON PurchaseItem.fkPurchasId = Purchase.pkPurchaseID
RIGHT OUTER JOIN dbo.StockItem
    ON PurchaseItem.fkStockItemId = StockItem.pkStockItemID
LEFT OUTER JOIN dbo.StockLevel
    ON StockLevel.fkStockItemId = StockItem.pkStockItemID
LEFT OUTER JOIN dbo.ProductCategories
    ON ProductCategories.CategoryId = StockItem.CategoryId
where ProductCategories.CategoryName = 'default' 

, который вернет значение

ItemTitle   ItemNumber  CategoryName    ItemDescription QuantityOrdered DateOfPurchase  DateOfDelivery  PONumber    QuotedDeliveryDate  CurrentQuantity OnOrder MinimumLevel
FBIM01      FBIM01      Default         Default         10              5/19/2011 0:00  7/6/2011 15:19  POA90949    6/24/2011 0:00      20              160     50
FBIM01      FBIM01      Default         Default         20              5/27/2011 0:00  6/23/2011 0:00  POA90950    6/24/2011 0:00      20              160     50
FBIM01      FBIM01      Default         Default         30              6/20/2011 0:00  6/23/2011 0:00  POA90951    6/24/2011 0:00      20              160     50
FBIM01      FBIM01      Default         Default         100             6/15/2011 0:00  6/23/2011 0:00  POA90952    6/24/2011 0:00      20              160     50

Однако я почесал голову, пытаясь заставить его отображаться как

ItemTitle   ItemNumber  CategoryName    ItemDescription QuantityOrdered QuantityOrdered2    QuantityOrdered3    QuantityOrdered4    PONumber1   PONumber2   PONumber3   PONumber4   CurrentQuantity OnOrder MinimumLevel            
FBIM01      FBIM01      Default         Default         10              20                  30                  100                 POA90949    POA90950    POA90951    POA90952    20              160     50     

Моего навыка просто нет. Не могли бы вы, гуру, помочь мне решить эту проблему? Спасибо

Answer 1

;with CTE AS
(
    SELECT
    StockItem.ItemTitle,
    StockItem.ItemNumber,
    ProductCategories.CategoryName,
    StockItem.ItemDescription,
    PurchaseItem.Quantity AS QuantityOrdered,
    Purchase.DateOfPurchase,
    Purchase.DateOfDelivery,
    Purchase.ExternalInvoiceNumber as PONumber,
    Purchase.QuotedDeliveryDate,
    StockLevel.Quantity AS CurrentQuantity,
    StockLevel.OnOrder,
    StockLevel.MinimumLevel,
    ROW_NUMBER()Over(Partition by StockItem.ItemTitle Order by StockItem.ItemTitle) As Rn
    FROM dbo.PurchaseItem
    INNER JOIN dbo.Purchase ON PurchaseItem.fkPurchasId = Purchase.pkPurchaseID
    RIGHT OUTER JOIN dbo.StockItem ON PurchaseItem.fkStockItemId = StockItem.pkStockItemID
    LEFT OUTER JOIN dbo.StockLevel ON StockLevel.fkStockItemId = StockItem.pkStockItemID
    LEFT OUTER JOIN dbo.ProductCategories ON ProductCategories.CategoryId = StockItem.CategoryId
    where ProductCategories.CategoryName = 'default'
)
Select ItemTitle,ItemNumber,
    CategoryName,
    ItemDescription,
    Quantity AS QuantityOrdered,
    DateOfPurchase,
    DateOfDelivery,
    ExternalInvoiceNumber as PONumber,
    QuotedDeliveryDate,
    Quantity AS CurrentQuantity,
    OnOrder,
    MinimumLevel,
From CTE
where rn=1