Question

我需要结合以下两个查询......

SELECT     Products.ProductId, Products.ProductDescription, SUM(Inventory.QuantityOutstanding) AS Inventory, Products.AverageCost AS Cost

FROM         Products INNER JOIN
                  Inventory ON Products.Product = Inventory.Product
WHERE    (Inventory > 0) AND (Products.ProductId LIKE 'CAS%') OR
                  (Products.ProductId LIKE 'ASY%')
GROUP BY Products.ProductId, Products.ProductDescription, Products.AverageCost
ORDER BY Products.ProductId

这给出了一个像......的表格。

ProductID    ProductDescription    Inventory    Cost
-------------------------------------------------------
   AB            CD                  0???       0
   UV            XY                    5        555
   .             .                     .         .
   .             .                     .         .
   .             .                     .         .

并且

SELECT Components.ProductId, SUM(SalesOrderItems.QuantityOutstanding) AS Schedule

FROM Structures INNER JOIN
Products AS Components ON  Structures.Component = Components.Product INNER JOIN
Products AS Products ON Products.Product = Structures.Product AND 
Structures.StructureVersion = Products.StructureVersion LEFT OUTER JOIN
SalesOrders INNER JOIN
SalesOrderItems ON SalesOrders.SalesOrder = SalesOrderItems.SalesOrder ON 
Products.Product = SalesOrderItems.Product


WHERE      ((Components.ProductId LIKE 'CAS%') OR (Components.ProductId LIKE 'ASY%')) AND (SalesOrderItems.DueDate < DATEADD(m, 3, GETDATE())) AND (SalesOrderItems.QuantityOutstanding > 0)
GROUP BY Components.ProductId, Products.ProductId
ORDER BY Components.ProductId

这给出了一个像......的表格。

ProductId      Schedule
-------------------------
  AB             360
  UV             3
   .             .
   .             .
   .             .

我基本上想要一个显示ProductId，（库存 - 时间表）AS XSStock的表格，以及这样的成本......

ProductId    XSStock (>0 only)    Cost
-------------------------------------------
   UV             2                222
   .              .                 .
   .              .                 .
   .              .                 .

我认为这可能是UNION或子查询，但我似乎无法工作？

我最近才开始使用SQL，所以如果你能解释一下你的回复会很棒！

KATIA EDIT QUERY：

SELECT ProductId, ProductDescription, Inventory, Cost, SUM(Orders) AS Demand, (Inventory - SUM(Orders)) AS XSStock

FROM (SELECT X.ProductId, X.ProductDescription, X.Inventory, X.Cost, SUM(Y.Schedule) AS Orders

    FROM (SELECT     Products.ProductId, Products.ProductDescription, SUM(Inventory.QuantityOutstanding) AS Inventory, Products.AverageCost AS Cost

        FROM         Products INNER JOIN
                            Inventory ON Products.Product = Inventory.Product
        WHERE     (Products.ProductId LIKE 'CAS%') OR
                            (Products.ProductId LIKE 'ASY%')
        GROUP BY Products.ProductId, Products.ProductDescription, Products.AverageCost) AS X, 

    (SELECT Components.ProductId, SUM(SalesOrderItems.QuantityOutstanding) AS Schedule

        FROM Structures INNER JOIN
        Products AS Components ON  Structures.Component = Components.Product INNER JOIN
        Products AS Products ON Products.Product = Structures.Product AND 
        Structures.StructureVersion = Products.StructureVersion LEFT OUTER JOIN
                SalesOrders INNER JOIN
        SalesOrderItems ON SalesOrders.SalesOrder = SalesOrderItems.SalesOrder ON 
        Products.Product = SalesOrderItems.Product

    WHERE      ((Components.ProductId LIKE 'CAS%') OR (Components.ProductId LIKE 'ASY%')) AND (SalesOrderItems.DueDate < DATEADD(m, 3, GETDATE())) AND (SalesOrderItems.QuantityOutstanding > 0)
    GROUP BY Components.ProductId, Products.ProductId) AS Y


WHERE (Y.ProductId LIKE X.ProductId)
GROUP BY X.ProductId, X.ProductDescription, X.Inventory, X.Cost)

WHERE ((Inventory - SUM(Orders)) > 0)
GROUP BY ProductId, ProductDescription, Inventory, Cost

ORDER BY ProductId

我现在收到错误消息......

Incorrect syntax near the keyword 'WHERE'

这是第30行，但我不知道为什么？

Answer 1

此外，您可以尝试在查询和选择查询

中对查询进行别名处理

SELECT x.a, y.b FROM (SELECT * from a) as x, (SELECT * FROM b) as y

Answer 2

要修复Inventory = 0，您只需在此处添加括号：

`(Inventory > 0) AND *((Products.ProductId LIKE 'CAS%') OR (Products.ProductId LIKE 'ASY%'))`

关于查询：您为什么不想从产品中进行选择并加入其中的所有内容？您在所有表中都有ProductsId。我尝试将它合并为一个，也许它会帮助你：

SELECT     Products.ProductId, Products.ProductDescription, SUM(Inventory.QuantityOutstanding) AS Inventory, Products.AverageCost AS Cost
 SUM(SalesOrderItems.QuantityOutstanding) AS Schedule
from Products

inner join Inventory ON Products.Product = Inventory.Product
inner join structures AS Components ON  Structures.Component = Products.Product INNER JOIN
inner join structurs as structures.Product = Product.Product and
Structures.StructureVersion = Products.StructureVersion 
LEFT OUTER JOIN
SalesOrders INNER JOIN SalesOrderItems ON SalesOrders.SalesOrder = SalesOrderItems.SalesOrder ON 
Products.Product = SalesOrderItems.Product
WHERE    (Inventory > 0) AND ((Products.ProductId LIKE 'CAS%') OR (Products.ProductId LIKE 'ASY%'))
and  ((Products.ProductId LIKE 'CAS%') OR (Products.ProductId LIKE 'ASY%')) 
AND (SalesOrderItems.DueDate < DATEADD(m, 3, GETDATE())) AND (SalesOrderItems.QuantityOutstanding > 0)

GROUP BY Products.ProductId, Products.ProductDescription, Products.AverageCost
ORDER BY Products.ProductId

如何组合两个查询？

2 个答案: