SQL 고득점 Kit - NOT IN Level3 - 없어진 기록 찾기 - mysql

https://school.programmers.co.kr/learn/challenges?page=1&languages=mysql&order=recent

select animal_id, name
from animal_outs
where animal_id not in (
    select animal_id
    from animal_ins
)

where <컬럼명> not in (

select id
from table

)