Eduardo Martins เป็นลูกค้าของบริษัทไหน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Eduardo Martins is a customer at which company?It is not neccessary to use all the tables.
 customers:  (company [ VARCHAR ] first_name [ VARCHAR ] last_name [ VARCHAR) ]
SELECT company FROM customers WHERE first_name = "Eduardo" AND last_name = "Martins"