select
    store_id,
    store_name,
    product_category,
    sum(inventory_quantity) inventory_quantity,
    sum(sales_amount) sales_amount
from
sales_inventory s1
left join
products s2
using(product_id)
left join
stores s3
using(store_id)
group by 1,2,product_id,3
having sum(inventory_quantity)<10 and sum(sales_amount)>5000
order by 1, product_id

真是一道憨包题目，出题人是中专生吧，实际会有这种需求嘛