있었는데요 없었습니다

https://school.programmers.co.kr/learn/courses/30/lessons/59043

• 문제 풀이

SELECT I.ANIMAL_ID, I.NAME
FROM ANIMAL_INS I 
JOIN ANIMAL_OUTS O
ON I.ANIMAL_ID = O.ANIMAL_ID
WHERE I.DATETIME > O.DATETIME
ORDER BY I.DATETIME ASC;

• 실행 결과