SQL | SOVESQL 2024 🎄: Day 02. 펭귄 조사하기

Day 02. 펭귄 조사하기

https://solvesql.com/problems/inspect-penguins/

SELECT island, species
FROM penguins
GROUP BY island, species
ORDER BY island ASC, species ASC

❗group by 절에 조건 넣기