<MySQL & Oracle>

SELECT ANIMAL_ID
     , NAME
  FROM ANIMAL_OUTS
 WHERE ANIMAL_ID NOT IN (SELECT B.ANIMAL_ID
                           FROM ANIMAL_OUTS B
                     INNER JOIN ANIMAL_INS A
                             ON B.ANIMAL_ID = A.ANIMAL_ID)
ORDER BY ANIMAL_ID

프로그래머스 없어진 기록 찾기 SQL

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