题解 | SQL 192. 某乎问答单日回答问题数大于等于3个的所有用户
WITH t1 AS ( SELECT answer_date, author_id, count(issue_id) AS answer_cnt FROM answer_tb WHERE SUBSTR(answer_date,6,2) = '11' GROUP BY answer_date, author_id HAVING answer_cnt >= 3 ORDER BY answer_date ASC, author_id ASC ) SELECT * FROM t1; # 这里需要注意的是:回答问题个数不考虑问题是否重复的问题!