보호소에서 중성화한 동물

https://programmers.co.kr/learn/courses/30/lessons/59045

코딩테스트 연습 - 보호소에서 중성화한 동물

 

MySQL, Oracle

SELECT A.ANIMAL_ID, A.ANIMAL_TYPE, A.NAME
FROM ANIMAL_INS A JOIN ANIMAL_OUTS B ON A.ANIMAL_ID = B.ANIMAL_ID
WHERE SEX_UPON_INTAKE <> SEX_UPON_OUTCOME
ORDER BY A.ANIMAL_ID

SELECT A.ANIMAL_ID, A.ANIMAL_TYPE, A.NAME
FROM (
    SELECT ANIMAL_ID, ANIMAL_TYPE, NAME
    FROM ANIMAL_INS
    WHERE SEX_UPON_INTAKE like 'Intact%'
    ) A JOIN (
    SELECT ANIMAL_ID, ANIMAL_TYPE, NAME
    FROM ANIMAL_OUTS
    WHERE SEX_UPON_OUTCOME like 'Spayed%' OR SEX_UPON_OUTCOME like 'Neutered%' 
    ) B ON A.ANIMAL_ID = B.ANIMAL_ID
ORDER BY A.ANIMAL_ID