[Programmers/Oracle] Level 3 - 없어진 기록 찾기

✔️ Question

https://school.programmers.co.kr/learn/courses/30/lessons/59042

프로그래머스

천재지변으로 인해 일부 데이터가 유실되었습니다. 입양을 간 기록은 있는데, 보호소에 들어온 기록이 없는 동물의 ID와 이름을 ID 순으로 조회하는 SQL문을 작성해주세요.

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👨‍💻 Solution

SELECT B.ANIMAL_ID, B.NAME
FROM ANIMAL_OUTS B
LEFT OUTER JOIN ANIMAL_INS A
ON B.ANIMAL_ID = A.ANIMAL_ID
WHERE A.INTAKE_CONDITION IS NULL
ORDER BY B.ANIMAL_ID;