SQL | SOLVESQL 코딩테스트 : Lv1. (SUBQUERY/CTE)

Lv1. 많이 주문한 테이블 찾기

https://solvesql.com/problems/find-tables-with-high-bill/

SELECT * 
FROM tips
WHERE total_bill > (SELECT AVG(total_bill) 
                    FROM tips)