Find out the top 10 customers by total number of orders. List customers' first and last name and the number of total orders.
SELECT T1.first_name ,  T1.last_name ,  COUNT(*) FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id  =  T1.id GROUP BY T1.id ORDER BY COUNT(*) DESC LIMIT 10;
SELECT T1.first_name ,  T1.last_name ,  COUNT(*) FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id  =  T1.id GROUP BY T1.id ORDER BY COUNT(*) DESC LIMIT 10;
[{'first_name': 'Luís', 'last_name': 'Gonçalves', 'COUNT(*)': 7}, {'first_name': 'Leonie', 'last_name': 'Köhler', 'COUNT(*)': 7}, {'first_name': 'François', 'last_name': 'Tremblay', 'COUNT(*)': 7}, {'first_name': 'Bjørn', 'last_name': 'Hansen', 'COUNT(*)': 7}, {'first_name': 'František', 'last_name': 'Wichterlová', 'COUNT(*)': 7}, {'first_name': 'Helena', 'last_name': 'Holý', 'COUNT(*)': 7}, {'first_name': 'Astrid', 'last_name': 'Gruber', 'COUNT(*)': 7}, {'first_name': 'Daan', 'last_name': 'Peeters', 'COUNT(*)': 7}, {'first_name': 'Kara', 'last_name': 'Nielsen', 'COUNT(*)': 7}, {'first_name': 'Eduardo', 'last_name': 'Martins', 'COUNT(*)': 7}]