문제 link
https://programmers.co.kr/learn/courses/30/lessons/77487
Code link
https://github.com/JamesJung01/Programmers_sql_kit/blob/main/heavy-user.sql
SELECT ID, NAME, HOST_ID FROM PLACES WHERE HOST_ID IN (SELECT HOST_ID FROM PLACES GROUP BY HOST_ID HAVING COUNT(HOST_ID) >= 2) ORDER BY ID;