SELECT B.ANIMAL_ID, B.NAME FROM ANIMAL_OUTS B
JOIN ANIMAL_INS A
ON A.ANIMAL_ID = B.ANIMAL_ID
WHERE B.DATETIME IS NOT NULL
ORDER BY DATEDIFF(B.DATETIME, A.DATETIME) DESC
LIMIT 2;

 

DATEDIFF(B, A) : B에서 A를 뺀 기간 계산

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