흉부외과 또는 일반외과 의사 목록 출력하기 mysql

https://school.programmers.co.kr/learn/courses/30/lessons/132203

SELECT DR_NAME, DR_ID, MCDP_CD, DATE_FORMAT(HIRE_YMD,'%Y-%m-%d')
FROM DOCTOR
WHERE MCDP_CD = 'CS' or MCDP_CD = 'GS'
ORDER BY HIRE_YMD DESC, DR_NAME

1. WHERE
2. ORDER BY
3. SELECT + DATE_FORMAT