난이도: EASY 문제 링크: https://leetcode.com/problems/students-and-examinations/description/?envType=study-plan-v2&envId=top-sql-50문제더보기Table: Students+---------------+---------+ | Column Name | Type | +---------------+---------+ | student_id | int | | student_name | varchar | +---------------+---------+ student_id is the primary key (column with unique values) for this table. Each row of ..