[프로그래머스] Lv3. 즐겨찾기가 가장 많은 식당 정보 출력하기 / GROUPBY

Lv3. 즐겨찾기가 가장 많은 식당 정보 출력하기

https://school.programmers.co.kr/learn/courses/30/lessons/131123

프로그래머스

# 1
SELECT FOOD_TYPE, REST_ID, REST_NAME, FAVORITES
FROM rest_info
WHERE (food_type, favorites) IN (SELECT food_type, MAX(favorites)
                                    FROM rest_info
                                    GROUP BY food_type)
ORDER BY food_type DESC

# 2
SELECT food_type, rest_id, rest_name, MAX(favorites) 'FAVORITES'
FROM rest_info
GROUP BY food_type
ORDER BY food_type DESC