Find out 5 customers who most recently purchased something. List customers' first and last name.
SELECT T1.first_name ,  T1.last_name FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id  =  T1.id ORDER BY T2.invoice_date DESC LIMIT 5;
SELECT T1.first_name ,  T1.last_name FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id  =  T1.id ORDER BY T2.invoice_date DESC LIMIT 5;
[{'first_name': 'Manoj', 'last_name': 'Pareek'}, {'first_name': 'Terhi', 'last_name': 'Hämäläinen'}, {'first_name': 'Madalena', 'last_name': 'Sampaio'}, {'first_name': 'Robert', 'last_name': 'Brown'}, {'first_name': 'Victor', 'last_name': 'Stevens'}]