Sql server 组合具有相同id的两条记录的sql查询

我创建了一个查询来计算采购订单数量和销售订单数量。问题是，对于SO数量，对于同一产品，我得到两行不同SO数量的数据。我想做的是添加相同产品的SO数量，并在数据库中显示为一行。请提供建议

以下是我写的问题：

SELECT DISTINCT products.ProductCode,
                products.ProductName,
                pe.stockreorderqty,
                pe.stocklowqtyalarm,
                products.StockStatus,
                pe.lastpo_qty,
                pe.lastpo_date,
                pe.vendor_price,
                Sum(PO_Items.POI_Quantity) - Sum(PO_Items.POI_QtyReceived) AS OutstandingPOQty,
                orderdetails.Quantity as outstandingsoqty
FROM Products INNER JOIN Products_Extended pe WITH (NOLOCK) ON products.ProductID = pe.ProductID 
LEFT JOIN PO_Items ON products.ProductCode = PO_Items.POI_ProductCode
LEFT JOIN orderdetails 
INNER JOIN orders ON orderdetails.OrderID = orders.OrderID  ON orderdetails.productcode = products.productcode 
    AND orders.OrderStatus <>'Cancelled' 
    AND orders.OrderStatus <>'Shipped'
    AND orders.OrderStatus <>'Returned'
GROUP BY products.ProductCode, products.ProductName, pe.stockreorderqty,
         pe.stocklowqtyalarm, products.StockStatus, pe.lastpo_qty,
         pe.lastpo_date, pe.vendor_price, orderdetails.Quantity

在上述输出中，产品代码相同，但未付数量不同。我想添加outstandingsoqty并将两行显示为一行。 对于相同的产品代码，它们的未付款数量不同，对于不同的未结销售订单也是如此

您可以通过以下链接检查图像的输出：

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有一种简单的方法可以做到这一点。不要在需要较大结果集的地方使用GROUPBY，这会使查询速度变慢，而应使用sub查询

这样做：

SELECT DISTINCT [OTHER Fields], 
(SELECT Sum(PO_Items.POI_Quantity) - Sum(PO_Items.POI_QtyReceived) FROM PO_Items WHERE PO_Items.POI_ProductCode = products.ProductCode) as OutstandingPOQty,
(SELECT Sum(det1.Quantity) FROM orderdetails AS det1 WHERE det1.productcode =products.productcode and det1.OrderID=orders.OrderID) as outstandingsoqty
FROM Products 
INNER JOIN Products_Extended pe WITH (NOLOCK) ON products.ProductID = pe.ProductID 
LEFT JOIN orderdetails INNER JOIN orders ON orderdetails.OrderID = orders.OrderID ON orderdetails.productcode = products.productcode 
and orders.OrderStatus <>'Cancelled' and orders.OrderStatus <>'Shipped' and orders.OrderStatus <>'Returned' 

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会很快的。希望能有所帮助。

如果您格式化sql、输出并给出所需输出的示例，使用GROUP BY并对数量进行求和，您可能会得到更好的响应。如果我对未付款数量求和，那么对于相同的产品代码，我会得到两行不同的结果。只有未付款数量中的数字会更改。求和orderdetails.Quantity，并将其从组中删除。当我求和时，我得到了错误的数量。请告知。我希望未付款数量是orders.OrderStatus“已取消”和orders.OrderStatus“已发货”以及orders.OrderStatus“已退回”的数量之和。请告知。现在，它给了我所有订单数量的总和add det1.OrderID=orders.OrderID在outstandingsoqty子查询中。根据修改后的查询将得到的结果告诉我，以便我可以更正。例如，对于产品代码10507，我得到两条未结清的记录数量1为第一条记录，数量2为第二条记录

SELECT DISTINCT [OTHER Fields], 
(SELECT Sum(PO_Items.POI_Quantity) - Sum(PO_Items.POI_QtyReceived) FROM PO_Items WHERE PO_Items.POI_ProductCode = products.ProductCode) as OutstandingPOQty,
(SELECT Sum(det1.Quantity) FROM orderdetails AS det1 WHERE det1.productcode =products.productcode and det1.OrderID=orders.OrderID) as outstandingsoqty
FROM Products 
INNER JOIN Products_Extended pe WITH (NOLOCK) ON products.ProductID = pe.ProductID 
LEFT JOIN orderdetails INNER JOIN orders ON orderdetails.OrderID = orders.OrderID ON orderdetails.productcode = products.productcode 
and orders.OrderStatus <>'Cancelled' and orders.OrderStatus <>'Shipped' and orders.OrderStatus <>'Returned'