How long is the total lesson time took by customer with first name Rylan and last name Goodwin?
select sum ( t1.lesson_time ) from lessons as t1 join customers as t2 on t1.customer_id = t2.customer_id where t2.first_name = "Rylan" and t2.last_name = "Goodwin"
What's the status of the lesson by the customer with first name Rylan and last name Goodwin
select t1.lesson_status_code from lessons as t1 join customers as t2 on t1.customer_id = t2.customer_id where t2.first_name = "Rylan" and t2.last_name = "Goodwin"
What's the customer id of the customer with first name Rylan and last name Goodwin?
select customer_id from customers where first_name = "Rylan" and last_name = "Goodwin"