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SELECT s.name
FROM students s
JOIN packages sp ON s.id = sp.id
JOIN friends f ON s.id = f.id
JOIN packages fp ON f.friend_id = fp.id
WHERE fp.salary > sp.salary
ORDER BY fp.salary;
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SELECT s.name FROM students s JOIN packages sp ON s.id = sp.id JOIN friends f ON s.id = f.id JOIN packages fp ON f.friend_id = fp.id WHERE fp.salary > sp.salary ORDER BY fp.salary;