596.(Easy)超过5名学生的课
有一个courses 表 ,有: student (学生) 和 class (课程)。
请列出所有超过或等于5名学生的课。
例如,表:
+---------+------------+
| student | class      |
+---------+------------+
| A       | Math       |
| B       | English    |
| C       | Math       |
| D       | Biology    |
| E       | Math       |
| F       | Computer   |
| G       | Math       |
| H       | Math       |
| I       | Math       |
+---------+------------+应该输出:
+---------+
| class   |
+---------+
| Math    |
+---------+
提示:
学生在每个课中不应被重复计算。来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/classes-more-than-5-students
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Solution
select class
from courses
group by 1
having count(distinct student)>=5Last updated
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