💯 solving-algo | March 15, 2021
-- 코드를 입력하세요
SELECT ANIMAL_ID
FROM ANIMAL_INS
WHERE NAME IS NULL
-- 코드를 입력하세요
SELECT ANIMAL_ID
FROM ANIMAL_INS
WHERE NAME IS NOT NULL
-- 코드를 입력하세요
SELECT ANIMAL_TYPE, IFNULL(NAME, "No name") AS NAME, SEX_UPON_INTAKE
FROM ANIMAL_INS