Code RoomAverage order value by country
MediumPrep Room Coding #5073

Average order value by country

SQLAlgorithms & data structuresMid~10 min

For paid orders, return the average order value per country as `country` and `avg_cents`, rounded to a whole number, largest average first.

What a strong answer looks like

Say what the query is meant to return before you write it, and name the shape of the answer: how many rows, grouped by what. Then watch the NULLs and the duplicates, because that is where most of these are lost.

Run onlyA query runs as one statement, so there is nothing to step through. Run it and read the rows.

0:00 of about 10 min

Expected, in this order

countryavg_cents
US42000
DE9900

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