QuerydrillRevenue by month
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 month as text like 2025-01 together with the total of its paid orders. Hint for SQLite: strftime('%Y-%m', order_date) gives the month.
What this exercise teaches
Grouping by a derived expression is the usual way to build monthly or weekly reports.
A hint if you get stuck
Group by the same strftime expression you select.
This exercise is part of Pro
Pro unlocks all 60 exercises, with worked solutions and progress saved to your account. The free exercises work without an account.
You create a free account first, so Pro is attached to it.
Monthly is charged today and then every month until you cancel, in one click from your account page. Lifetime is one payment with no renewals. Full refund within 14 days of paying.