显示产品的最小销售量为SQL

Question

我受命执行以下查询来设计：

“在2019年售出的产品中（即至少售出一个产品），我们想知道售出最少产品的产品。您的表格必须显示：

• 产品ID
• 产品名称
• 产品的类别名称“

我已经提供了数据库的屏幕快照。

实际上，我能够检索与售出的最小单位相对应的值[在这种情况下为95，但也无法在MS Access中显示与该值相对应的产品名称。

使用以下代码显示正确的最小值：

SELECT MIN(UnitsSold)
FROM 
     (SELECT Products.ProductID, ProductName, Categories.CategoryID, CategoryName, SUM(Quantity) AS UnitsSold 
     FROM Orders, OrderDetails, Products, Categories 
     WHERE Orders.OrderID = OrderDetails.OrderID AND OrderDetails.ProductID = Products.ProductID And Products.CategoryID = Categories.CategoryID AND OrderDate BETWEEN #01/01/2019# AND #12/31/2019# 
     GROUP BY Products.ProductID, ProductName, Categories.CategoryID, CategoryName 
     HAVING SUM(Quantity) >= 1);

但是当我尝试同时显示具有此修改的产品时：

SELECT MIN(UnitsSold, Products.ProductID, ProductName
FROM 
     (SELECT Products.ProductID, ProductName, Categories.CategoryID, CategoryName, SUM(Quantity) AS UnitsSold 
     FROM Orders, OrderDetails, Products, Categories 
     WHERE Orders.OrderID = OrderDetails.OrderID AND OrderDetails.ProductID = Products.ProductID And Products.CategoryID = Categories.CategoryID AND OrderDate BETWEEN #01/01/2019# AND #12/31/2019# 
     GROUP BY Products.ProductID, ProductName, Categories.CategoryID, CategoryName 
     HAVING SUM(Quantity) >= 1);

我遇到错误：

您的查询未将指定的表达式'ProductID'作为聚合函数的一部分包含在内

Answer 1

为什么不只使用ORDER BY和TOP 1：

SELECT TOP (1)
    Products.ProductID, 
    ProductName, 
    Categories.CategoryID, 
    Categories.CategoryName, 
FROM 
    Orders
    INNER JOIN OrderDetails ON Orders.OrderID = OrderDetails.OrderID
    INNER JOIN Products ON OrderDetails.ProductID = Products.ProductID
    INNER JOIN Categories ON Products.CategoryID = Categories.CategoryID
WHERE OrderDate BETWEEN #01/01/2019# AND #12/31/2019# 
GROUP BY 
    Products.ProductID, 
    ProductName, 
    Categories.CategoryID, 
    CategoryName 
HAVING SUM(Quantity) >= 1
ORDER BY SUM(Quantity) DESC