Solving Classes More Than 5 Students in Sql. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

There is a table courses with columns: student and class

Please list out all classes which have more than or equal to 5 students.

For example, the table:

+---------+------------+
| student | class |
+---------+------------+
| A | Math |
| B | English |
| C | Math |
| D | Biology |
| E | Math |
| F | Computer |
| G | Math |
| H | Math |
| I | Math |
+---------+------------+

Should output:

+---------+
| class |
+---------+
| Math |
+---------+

Note:

The students should not be counted duplicate in each course.

See the full details of the problem Classes More Than 5 Students at LeetCode

Originally posted at: @github.com/ignacio-chiazzo/Algorithms-Leetcode-Javascript