一種將 2 個單獨的查詢組合成一個查詢和 1 個表的方法？

Question

我想將 2 個單獨的查詢組合成一個查詢，並能夠將它們排序到 1 個表中。

這是我要結合的代碼

SELECT 
    t1.CompanyName as 'Customer Company Name', 
    t1.ContactName, t1.ContactTitle, t1.City, t1.Country, t1.Phone 
FROM 
    Customers t1
WHERE 
    t1.Country = 'Germany'
ORDER BY 
    t1.City;

SELECT 
    t2.CompanyName as 'Supplier Company Name', 
    t2.ContactName, t2.ContactTitle, t2.City, t2.Country, t2.Phone 
FROM 
    Suppliers t2
WHERE 
    t2.Country = 'Germany'
ORDER BY 
    t2.City;

我還需要區分他們是表中的供應商還是客戶。 有沒有辦法顯示該行的數據來自哪里？

我希望得到這樣的東西

Company Name | Contact Name | Phone       | Table of Origin
-------------+--------------+-------------+-----------------
Target         Steven        111-111-1111  Customer
Factory Name   Connor        222-222-2222  Supplier

Answer 1

我想你只想要union all ：

SELECT t1.CompanyName, t1.ContactName, t1.Phone, 'Customers' as which
FROM Customers t1
WHERE t1.Country = 'Germany'
UNION ALL
SELECT t2.CompanyName, t2.ContactName, t2.Phone, 'Suppliers' as which
FROM Suppliers t2
WHERE t2.Country = 'Germany';