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[Sql] NULL 처리하기 #229

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@hwangJi-dev

💬 문제

https://school.programmers.co.kr/learn/courses/30/lessons/59410


💬 풀이

SELECT ANIMAL_TYPE, IFNULL(NAME, "No name") AS NAME, SEX_UPON_INTAKE
FROM ANIMAL_INS
ORDER BY ANIMAL_ID

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