正從其他表更多然後1點的數據，同時加入他們

Question

我想查詢的截圖是非常不言自明。

我需要的僅僅是從CustomerAddresses表中獲取2個地址，而不是像本例中那樣只有1個地址。 1用於ShippingAddress，另一個用於BillingAddress。

聽起來像這很容易解決這個問題，但顯然我錯過了一些東西。在此先感謝..

Answer 1

您需要加入包含地址兩次的表。一次爲ShippingAddressID，一次爲BillingAddressID：

SELECT 
    ... 
    ShippingAddress.Address as 'ShippingAddress', 
    BillingAddress.Address as 'BillingAddress', 
    ... 
FROM 
    ... 
    INNER JOIN CustomerAddresses as ShippingAddress 
     ON Orders.ShippingAddressID = ShippingAddress.CustomerAddressID 
    INNER JOIN CustomerAddresses as BillingAddress 
     ON Orders.BillingAddressID = BillingAddress.CustomerAddressID