题目链接:点击打开链接
题目大意:略。
解题思路:略。
AC 代码
SELECT contest_id, ROUND(COUNT(*) / (SELECT COUNT(*) FROM Users) * 100, 2) percentage FROM Register GROUP BY contest_id ORDER BY percentage DESC, contest_id
题目链接:点击打开链接
题目大意:略。
解题思路:略。
AC 代码
SELECT contest_id, ROUND(COUNT(*) / (SELECT COUNT(*) FROM Users) * 100, 2) percentage FROM Register GROUP BY contest_id ORDER BY percentage DESC, contest_id