問題 https://leetcode.com/problems/consecutive-numbers/ 解いた SELECT L.num AS 'ConsecutiveNums' FROM Logs L, Logs LL, Logs LLL WHERE L.id = LL.id - 1 AND LL.id = LLL.id - 1 AND L.num = LL.num && LL.num = LLL.num GROUP BY L.num; 結果

問題 https://leetcode.com/problems/delete-duplicate-emails/ 解いた DELETE P FROM Person AS P, Person AS PP WHERE P.email = PP.email AND P.ID > PP.id; 結果