SQL
leetcode 1280. Students and Examinations
무적김두칠
2023. 4. 12. 18:09
https://leetcode.com/problems/students-and-examinations/description/
Students and Examinations - LeetCode
Can you solve this real interview question? Students and Examinations - Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.
leetcode.com
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# Write your MySQL query statement below
select
s.student_id,
s.student_name, sub.subject_name,
count(e.subject_name) attended_exams
from Students s
join Subjects sub
left join Examinations e
on s.student_id = e.student_id and e.subject_name =sub.subject_name
group by s.student_id, sub.subject_name
order by s.student_id, sub.subject_name
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cs |
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