I tried this query
SELECT uid1,uid2
from friend
where uid1= 437574483052913
AND uid2 = 314664215408124
I got an empty return . When I search their name in their friends list , I see they are friend.
Facebook depredated all the find friend ways .
Could I know they are friend ?
This is a lot easier with the Graph API:
/me/friends/{user-id}
Of course both users have to authorize the App with the user_friends
permission.