Question

我需要获取从未订购过订单的客户列表

我正在传递一个CustomerNumbers列表，抓住他们加入Orders然后我正在分组 - 我觉得我很接近但不确定如何获得没有Orders.Exported设置为1的客户。

这是我到目前为止所做的：

SELECT Customers.CustomerID,
       Orders.Exported,
       Count(Orders.OrderID) AS OrderCount
FROM Customers WITH (Nolock)
JOIN Orders ON Customers.ManufacturerID = Orders.ManufacturerID
AND Customers.CustomerNumber = Orders.CustomerNumber
WHERE Customers.CustomerNumber IN (
  SELECT *
  FROM dbo.Split(REPLACE(@CustomerNumbers,'\',''),','))
  AND Customers.ManufacturerID=@ManufacturerID
  AND Customers.Source = 'ipad'
GROUP BY Customers.CustomerID,
         Orders.Exported

这几乎让我得到了我需要的东西，我的结果是：

CustomerID  Exported    OrderCount
375408      NULL         1
375408      1            5
375412      1            2 
376892      NULL         1

所以在这个列表中我只想要376892，因为他们从未在

之前导出订单

Answer 1

您可以使用Having Min(IsNull(Orders.Exported,0)) Left Join和删除分组 Orders.Exported来过滤掉之前已导出订单的客户。

从逻辑上讲，您的点数将始终为0，因此您无需计算。

SELECT Customers.CustomerID, Min(IsNull(Orders.Exported,0)) Exported, Count(Orders.OrderID) As OrderCount
FROM Customers With (Nolock) LEFT JOIN Orders 
    ON Customers.ManufacturerID = Orders.ManufacturerID AND 
       Customers.CustomerNumber = Orders.CustomerNumber
WHERE Customers.CustomerNumber IN (
         SELECT colName FROM dbo.Split(REPLACE(@CustomerNumbers,'\',''),',')) AND 
         Customers.ManufacturerID=@ManufacturerID AND Customers.Source = 'ipad' 
GROUP BY Customers.CustomerID 
HAVING Min(IsNull(Orders.Exported,0)) = 0

Answer 2

WHERE Customers.CustomerNumber IN (SELECT * FROM dbo.Split(REPLACE(@CustomerNumbers,'\',''),','))
    AND Customers.ManufacturerID=@ManufacturerID
    AND Customers.Source = 'ipad' 
    AND Orders.Exported is NuLL

Answer 3

WITH CustomersWithExportedOrders AS (
    SELECT Customers.CustomerNumber
    FROM Customers
         INNER JOIN Orders
             ON Customers.ManufacturerID = Orders.ManufacturerID 
                AND Customers.CustomerNumber = Orders.CustomerNumber
    WHERE Orders.Exported IS NOT NULL
)
SELECT Customers.CustomerID
     , Orders.Exported
     , Count(Orders.OrderID) As OrderCount
FROM Customers 
     INNER JOIN Orders 
         ON Customers.ManufacturerID = Orders.ManufacturerID 
            AND Customers.CustomerNumber = Orders.CustomerNumber
WHERE Customers.CustomerNumber IN (SELECT * 
                                   FROM dbo.Split(REPLACE(@CustomerNumbers, '\', ''), ','))
      AND Customers.ManufacturerID = @ManufacturerID
      AND Customers.CustomerNumber NOT IN (SELECT CustomerNumber 
                                           FROM CustomersWithExportedOrders)
      AND Customers.Source = 'ipad' 
GROUP BY Customers.CustomerID
        , Orders.Exported

查找未导出任何订单的客户

3 个答案: