QuerydrillRevenue per country
An SQL exercise from Querydrill. Solve it with a SQL editor in your browser, checked on the rows it returns and again on changed data, and it is checked the moment you submit.
The task
Return each country with the total of its customers' paid orders. Countries without paid orders do not appear.
What this exercise teaches
Join, filter, group: most analyst queries follow this order.
A hint if you get stuck
Join first, filter paid orders, then group by country.
This exercise is part of Pro
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