MediumJOIN

Which categories has each city bought?

For each city, list the distinct product categories that customers there have ever ordered. Sort by city, then category.

#distinct

Schema (SQLite, in-browser)

customers    (id, name, city, signup_date)
products     (id, name, category, price)
orders       (id, customer_id, order_date, status)
order_items  (order_id, product_id, quantity)

Sample input

4 cities, 3 categories

Expected shape

up to 12 rows

sql-distinct.sqlSQLite

Result

Press “Run query” to execute against the sample database.

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Which categories has each city bought? — SQL Practice · Nettms Academy