SUM本週銷售價格

Question

我已經找到了適合我的解決方案的完美代碼，但是很遺憾，我還沒有找到一種方法來爲那一天添加一個小的添加項，即SUMselling_price。

SQL代碼：

SELECT 
    COUNT(WEEKDAY(`date`) = 0 OR NULL) AS Mon, 
    COUNT(WEEKDAY(`date`) = 1 OR NULL) AS Tue, 
    COUNT(WEEKDAY(`date`) = 2 OR NULL) AS Wed, 
    COUNT(WEEKDAY(`date`) = 3 OR NULL) AS Thu, 
    COUNT(WEEKDAY(`date`) = 4 OR NULL) AS Fri, 
    COUNT(WEEKDAY(`date`) = 5 OR NULL) AS Sat, 
    COUNT(WEEKDAY(`date`) = 6 OR NULL) AS Sun 
FROM orders 
WHERE `date` >= CURRENT_DATE() - INTERVAL (WEEKDAY(CURRENT_DATE())) DAY 
    AND `date` < CURRENT_DATE() + INTERVAL 1 DAY 

Answer 1

SUM(IF(WEEKDAY(`date`) = 0,selling_price,0)) AS Mon_Price