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๋ฐ์ํ
https://programmers.co.kr/learn/courses/30/lessons/59410
SELECT ANIMAL_TYPE, IFNULL(NAME, "No name") as NAME, SEX_UPON_INTAKE
FROM ANIMAL_INS
ORDER BY ANIMAL_ID ASC
IFNULL(NAME, "No name") as NAME <- ๋ง์ฝ NULL์ธ ๊ฒฝ์ฐ์ No name ์ถ๋ ฅ ์๋๋ฉด NAME์ ๊ทธ๋๋ก ์ถ๋ ฅ
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