SQL 알고리즘 코드카타 30일차 26.02.04(수)

부제:

Article Views I

 

1. 문제 링크:https://leetcode.com/problems/article-views-i/description/
2. 정답 코드: 

select
    distinct viewer_id as id
from views
where author_id = viewer_id
order by id

3. 오류 상황:
4. 시도 방법:
5. 최종 문제 해결 방법: