UPDATE users SET avatar_url = '/media/maya-chen.jpg' WHERE id = '11111111-1111-4111-8111-111111111111';
UPDATE users SET avatar_url = '/media/jordan-lee.jpg' WHERE id = '22222222-2222-4222-8222-222222222222';
UPDATE users SET avatar_url = '/media/priya-raman.jpg' WHERE id = '33333333-3333-4333-8333-333333333333';
UPDATE users SET avatar_url = '/media/noah-williams.jpg' WHERE id = '44444444-4444-4444-8444-444444444444';
UPDATE posts SET media_url = '/media/workshop.jpg' WHERE id = 'bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb';