테이블 생성 코드 Create table If Not Exists Views (article_id int, author_id int, viewer_id int, view_date date) Truncate table Views insert into Views (article_id, author_id, viewer_id, view_date) values ('1', '3', '5', '2019-08-01') insert into Views (article_id, author_id, viewer_id, view_date) values ('1', '3', '6', '2019-08-02') insert into Views (article_id, author_id, viewer_id, view_date) value..
