MYSQL查詢 - 多個喜歡

Question

卡住這個查詢。顯然，我在下面有錯，但希望它使我想要明確的。

SELECT branch, 
SUM(price * quantity) as "Office" FROM orders WHERE account LIKE "0%" 
and 
SUM(price * quantity) as Personal FROM orders WHERE account LIKE "1%" 
GROUP BY branch; 

我確定我在這裏。

感謝

Answer 1

使用case每個總和內：

select branch, 
    sum(case when account like '0%' then price * quantity else 0 end) as Office, 
    sum(case when account like '1%' then price * quantity else 0 end) as Personal 
from orders 
group by branch