NULL 처리하기 (CASE, IFNULL)

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

프로그래머스

 

난이도: 레벨2

 

내 코드

SELECT 
ANIMAL_TYPE ,
CASE  
    WHEN NAME IS NOT NULL THEN NAME
    WHEN NAME IS NULL THEN 'No name'
END AS NAME, 
SEX_UPON_INTAKE
FROM ANIMAL_INS
ORDER BY ANIMAL_ID ASC

 

예시 코드

SELECT ANIMAL_TYPE, IFNULL(NAME, 'No name'), SEX_UPON_INTAKE 
FROM ANIMAL_INS 
ORDER BY ANIMAL_ID;