You are viewing a single comment's thread. Return to all comments →
Do you know whether the following code is correct or not? It also pass the online test. thanks!
SELECT h.hacker_id, h.name FROM Hackers h JOIN Submissions s ON h.hacker_id = s.hacker_id JOIN Challenges c ON c.challenge_id = s.challenge_id JOIN Difficulty d ON c.difficulty_level = d.difficulty_level WHERE s.score = d.score GROUP BY 1,2 HAVING COUNT(DISTINCT c.challenge_id) > 1 ORDER BY COUNT(DISTINCT c.challenge_id) DESC, h.hacker_id ASC
Seems like cookies are disabled on this browser, please enable them to open this website
Top Competitors
You are viewing a single comment's thread. Return to all comments →
Do you know whether the following code is correct or not? It also pass the online test. thanks!