[Programmers] 오랜 기간 보호한 동물(1)

SELECT A.NAME
     , A.DATETIME
  FROM ANIMAL_INS  A
  LEFT OUTER
  JOIN ANIMAL_OUTS B
    ON A.ANIMAL_ID = B.ANIMAL_ID
 WHERE B.DATETIME IS NULL
 ORDER BY A.DATETIME
 FETCH NEXT 3 ROW ONLY