Context: CREATE TABLE Customers (customer_id VARCHAR, first_name VARCHAR, last_name VARCHAR); CREATE TABLE Customer_Payments (amount_payment INTEGER, customer_id VARCHAR)
Question: How much in total does customer with first name as Carole and last name as Bernhard paid?
Answer: SELECT SUM(T1.amount_payment) FROM Customer_Payments AS T1 JOIN Customers AS T2 ON T1.customer_id = T2.customer_id WHERE T2.first_name = "Carole" AND T2.last_name = "Bernhard"