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过去一年提交了

勋章 ①金银铜：在竞赛中获得第一二三名；②好习惯：自然月10天提交；③里程碑：解决1/2/5/10/20/50/100/200题；④每周打卡挑战：完成每周5题，每年1月1日清零。

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提交日期 题目名称 提交代码
2026-03-09 S1年级物理成绩前10名（1）  
select s.student_id, s.name, c.score, row_number() over (partition by s.grade_code order by c.score desc) as rnk from students s
left join scores c on s.student_id = c.student_id
where subject = '物理' and grade_code = 'S1'
limit 10
2026-03-09 S1年级物理成绩前10名（1）  
select s.student_id, s.name, c.score, row_number() over (order by c.score desc) as rnk from students s
left join scores c on s.student_id = c.student_id
where s.grade_code = 'S1' and c.subject = '物理'
limit 10
2026-03-09 S1年级物理成绩前10名（1）  
select s.student_id, s.name, c.score, row_number() over (order by c.score desc) as rnk from students s
left join scores c on s.student_id = c.student_id
where s.grade_code = 'S1'
limit 10
2026-03-06 人数最多的学生姓氏  
select substr(s.name, 1, 1) as surname, count(substr(s.name, 1, 1)) as cnt 
from students s
group by surname
order by cnt DESC 
limit 5
2026-03-06 学生信息和班主任姓名  
select s.name, s.class_code, s.grade_code, t.name as head_teacher_name from students s 
left join teachers t 
on s.class_code = t.head_teacher
order by s.student_id