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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
2026-03-17 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select s.student_id, 
 s.name, 
 sc.score, 
 rank() over (order by sc.score desc)as ranking
from students s 
join scores sc 
on s.student_id=sc.student_id
where s.grade_code = 'S1'and sc.subject = '物理'
)
select student_id, name, score, ranking from 物理前十
limit 10
2026-03-17 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select s.student_id, 
 s.name, 
 sc.score, 
 rank() over (order by sc.score desc)as ranking
from students s 
join scores sc 
on s.student_id=sc.student_id
where s.grade_code = 'S1'and sc.subject = '物理'
)
select student_id, name, score, ranking from 物理前十
2026-03-17 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select s.student_id, 
 s.name, 
 sc.score, 
 rank() over (order by sc.score desc)as 排名
from students s 
join scores sc 
on s.student_id=sc.student_id
where s.grade_code = 'S1'and sc.subject = '物理'
)
select student_id, name, score, 排名 from 物理前十
2026-03-17 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select s.student_id, 
 s.name, 
 sc.score, 
 rank() over (order by sc.score desc)as 排名
from students s join scores sc on s.student_id=sc.student_id
where s.grade_code='S1'and sc.subject='物理'
)
select student_id, name, score, 排名 from 物理前十
2026-03-17 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select s.student_id, s.name, sc.score, rank() over (order by sc.score)as 排名
from students s join scores sc on s.student_id=sc.student_id
where s.grade_code='S1'and sc.subject='物理'
)
select student_id, name, score, 排名 from 物理前十
2026-03-13 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select
s.student_id,
s.name,
sc.score,
rank() over(order by sc.score desc) as 排名
from students s join scores sc on s.student_id=sc.student_id
where s.grade_code='s1' and sc.subject='物理'
)
 select student_id,
name,
score,
排名
 from 物理前十
 limit 10
2026-03-13 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select
s.student_id,
s.name,
sc.score,
rank() over(order by sc.score desc) as 排名
from students s join scores sc on s.student_id=sc.student_id
where s.grade_code='s1' and sc.subject='物理'
)
 select student_id,
name,
score,
排名
 from 物理前十
2026-03-13 S1年级物理成绩前10名（2）  
with 物理前十 as 
(
select
s.student_id,
s.name,
sc.score,
rank() over(order by sc.score desc) as 排名
from students s join scores sc on s.student_id=sc.student_id
where s.grade_code='s1' and sc.subject='物理'
)
 select student_id,
name,
score,
排名
 from 物理前十
 limit 10;
2026-03-13 S1年级物理成绩前10名（1）  
WITH 物理前十 AS ( 
SELECT 
s.student_id,s.name,sc.score,
row_number() 
over(partition by s.grade_code ORDER BY sc.score DESC) AS 排名 
FROM 
students s
JOIN 
scores sc ON s.student_id = sc.student_id
WHERE 
s.grade_code = 'S1' 
AND sc.subject = '物理'
)
SELECT 
student_id, 
name, 
score, 
排名
FROM 
物理前十
limit 10;
2026-03-13 人数最多的学生姓氏  
select left (name,1) AS aname,
 count(*) AS cnt
 from students
 group by left (name,1)
 order by cnt desc
 limit 5;
2026-03-13 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 join teachers t ON s.class_code=t.head_teacher
order by student_id;
2026-03-13 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 JOIN teachers t on s.class_code = t.head_teacher
order by s.student_id;
2026-03-13 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 JOIN teachers t on s.class_code = t.class_code
order by s.student_id;