// Friend Requests list Query..
select oi.*, fm.* FROM friend_req oi INNER JOIN users fm ON oi.sender_id = fm.id where oi.receiver_id='193'

// Friend list Query..
select fl.*, ur.* 
FROM friend_list fl 
INNER JOIN users ur 
ON
fl.friend_id = ur.id 
where fl.user_id = 193