What is the zip code of staff with first name as Janessa and last name as Sawayn lived?
create table addresses (zip_postcode varchar, address_id varchar, PRIMARY KEY (zip_postcode)); create table staff (staff_address_id varchar, first_name varchar, last_name varchar, PRIMARY KEY (staff_address_id))
select t1.zip_postcode from addresses as t1 join staff as t2 on t1.address_id = t2.staff_address_id where t2.first_name = "janessa" and t2.last_name = "sawayn"