leetcode - 596. Classes More Than 5 Students

난이도 : Easy

 

Table: Courses

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| student     | varchar |
| class       | varchar |
+-------------+---------+
(student, class) is the primary key column for this table.
Each row of this table indicates the name of a student and the class in which they are enrolled.

 

Write an SQL query to report all the classes that have at least five students.

Return the result table in any order.

 

 

SELECT class
FROM Courses
GROUP BY class
HAVING COUNT(student)>= 5

Accepted (33.45%)