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类目归类
[LeetCode 596] Classes More Than 5 Students [MySql]
09/17
1. 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.
2. Runtime Distribution
3. Submission Details
4. Example
| student | class |
|---|---|
| A | Math |
| B | English |
| C | Math |
| D | Biology |
| E | Math |
| F | Computer |
| G | Math |
| H | Math |
| I | Math |
Should output:
| class |
|---|
| Math |
5. Code
select class from courses group by class having count(distinct student ) >= 5
