プログラマーとプログラミングに熱心な人々のための質問と回答
select distinct p.Id, p.CreationDate, p.OwnerUserId, cast(p.CreationDate as date) as creation_date, u.* from Posts as p inner join Users as u on p.OwnerUserId=u.Id where u.CreationDate > '2021/01/01' and u.UpVotes < u.DownVotes