https://dataonair.or.kr/db-tech-reference/d-guide/dbms-2/?mod=document&uid=62471
NestJS class-validator를 이용해 request에 validation pipe 적용하기
https://kimsyoung.tistory.com/entry/SQL%EC%97%90%EC%84%9C-%EC%A4%91%EB%B3%B5%EA%B0%92-%EC%B0%BE%EB%8A%94-%EB%B0%A9%EB%B2%95#recentComments