Weekdays and weekends in SQL
SQL interview exercise on Strings, Dates & CASE, difficulty 2 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
Return total revenue for weekdays and for weekends (Saturday and Sunday). Columns: day_type, revenue, where day_type is 'weekday' or 'weekend'. Sorted by day_type.
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.