List all tracks bought by customer Daan Peeters
select t1.name from tracks as t1 join invoice_lines as t2 on t1.id = t2.track_id join invoices as t3 on t3.id = t2.invoice_id join customers as t4 on t4.id = t3.customer_id where t4.first_name = "Daan" and t4.last_name = "Peeters"
How many milliseconds does each of those tracks have?
select id ,milliseconds from tracks group by id
Yes
select unit_price from tracks