CREATE TABLE rental (staff_id VARCHAR2, customer_id VARCHAR2)
CREATE TABLE customer (customer_id VARCHAR2, first_name VARCHAR2, last_name VARCHAR2)
CREATE TABLE staff (first_name VARCHAR2, last_name VARCHAR2, staff_id VARCHAR2)

What is the full name of the staff member who has rented a film to a customer with the first name April and the last name Burns?
SELECT DISTINCT T1.first_name, T1.last_name FROM staff AS T1 JOIN rental AS T2 ON T1.staff_id = T2.staff_id JOIN customer AS T3 ON T2.customer_id = T3.customer_id WHERE T3.first_name = 'APRIL' AND T3.last_name = 'BURNS'
SELECT DISTINCT "T1"."first_name", "T1"."last_name" FROM "staff" "T1" JOIN "rental" "T2" ON "T1"."staff_id" = "T2"."staff_id" JOIN "customer" "T3" ON "T2"."customer_id" = "T3"."customer_id" AND "T3"."first_name" = 'APRIL' AND "T3"."last_name" = 'BURNS'