答案 0 :(得分:0)
Select region,sum(sales)
from store_information,geography
Group by region
将根据地理位置进行销售。 现在您可以选择所需的地理位置和saleAmount
答案 1 :(得分:0)
似乎你需要西部的总和
Select sum(sales)
from store_information
LEFT JOIN geography on geography.store_name = store_information.store_name
where region = 'West'