mysql統計每日單獨ip訪問總量

SELECT FROM_UNIXTIME(dateline,'%Y%m%d') AS date, COUNT(distinct authorid) AS num FROM pre_forum_post WHERE tid=4634 GROUP BY date

SELECT FROM_UNIXTIME(dateline,'%Y%m%d') AS date, COUNT(distinct authorid) AS num FROM pre_forum_post WHERE tid=4634 GROUP BY date

案例是discuz某個主題 統計每天回帖數，每天多次回覆算一次