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[programmers] 없어진 기록 찾기공부/PS ( SQL) 2022. 5. 20. 23:32
https://programmers.co.kr/learn/courses/30/lessons/59042
SELECT O.ANIMAL_ID, O.NAME FROM ANIMAL_OUTS AS O LEFT JOIN ANIMAL_INS AS I ON O.ANIMAL_ID = I.ANIMAL_ID WHERE I.ANIMAL_ID IS NULL ORDER BY O.ANIMAL_ID
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