Pick a question to answer.
Each free exercise runs a real query on sample company data. No account, card or installation needed.
Call list of business customers
The B2B sales team wants to phone every business customer this week. Return the name and email (in that order) of every customer whose segment is 'business'.
How big is our customer base?
For the investor update, the founder wants two numbers in one row: how many customers we have, and in how many different countries they live. Return the customer count first, then the number of distinct countries.
Who still owes us money?
Finance wants to chase customers with unpaid invoices before month-end. An invoice is unpaid when its status is 'open'; 'void' invoices were cancelled and nobody owes them. Return one row per open invoice with three columns: the company name, the invoice_date and the amount. Any row order is fine.
Recent paid orders
Return id, customer_id and order_date for paid orders placed on or after 1 September 2026, sorted newest order_date first and id ascending.