從數據庫中選擇行和總結/組

Question

我目前正在爲此SQL語句的邏輯而苦苦掙扎。

我有一個表中包含列：

Country, Customer, Year, Product Purchased(5 different products) and Revenue. 

我期待寫，通過國家，客戶名稱拉select語句，每個購買的產品，收入各產品在客戶中每年。

SELECT Country, Customer, Year, Product, Revenue 
FROM table 
GROUP BY Country, Customer, Year, Product Purchased, Revenue 

國家的客戶年產品收入總收入 英格蘭客戶A 2017年A產品100 200 英格蘭客戶A 2017年產品B 100 200 英格蘭客戶了2016產品A 100 100 誰能幫助嗎？

Answer 1

SELECT sum(Revenue), Country, Customer, Year, Product 
FROM table 
GROUP BY Country, Customer, Year, Product 

Live demo to illustrate the result

Answer 2

SELECT SUM(Revenue),Country, Customer, YEAR, Product 
FROM TABLE 
GROUP BY Country, Customer, YEAR, Product Purchased