SQL join help for friend list

Question

I have three database tables: users, user_profiles and friends:

users

• id
• username

Answer 1

Some modification to eugene y's answer, will this work?

SELECT * FROM users u
JOIN friends f ON (f.userb_id = u.id OR f.usera_id = u.id)
JOIN user_profiles p ON u.id = p.user_id
WHERE u.id = ?