LeetCode（数据库）- 报告的记录

题目链接：​​点击打开链接​​

题目大意：略。

解题思路：略。

AC 代码

SELECT extra report_reason, COUNT(DISTINCT post_id) report_count
FROM Actions
WHERE extra IS NOT NULL AND action_date = '2019-07-04' AND action = 'report'
GROUP BY extra