Select persons.first_names, persons.last_name, jb_screens.screen_id, jb_screens.service
from jb_screens, persons
where persons.person_id = jb_screens.user_id
and jb_screens.user_id is not null
and jb_screens.screen_id IN (Select friend_screen_id from jb_friends where user_id = :user_id)
Select jb_friends.friend_first_name, jb_friends.friend_last_name , jb_screens.screen_id , jb_screens.service
from jb_friends , jb_screens
where jb_friends.user_id = :user_id
and friend_first_name is not null
and friend_last_name is not null
and jb_friends.friend_screen_id = jb_screens.screen_id