统计

scores/api/score_api.py

@@ -37,7 +37,7 @@ def update_scores(score:ScoreRequest,sid:int,cid:int,num:int,t_subject:int,db=De
 @score_api.delete('/Score',summary='成绩删除',description=f'查询条件为学号,班级号,考试科目,然后进行删除')
 def delete_scores(sid:int,cid:int,t_subject:int,db=Depends(get_db)):
     aaa = delete_scores_dao(sid,cid,t_subject,db)
-    if  aaa==1:
+    if  aaa==-1:
         raise HTTPException(status_code=500,detail='删除失败')
     if  aaa==0:
         raise HTTPException(status_code=404,detail='记录不存在')

scores/api/statistic_api.py

@@ -0,0 +1,26 @@
+from fastapi import APIRouter, Depends, HTTPException
+from scores.database import get_db
+from scores.dao.statistic_dao import get_top_students_dao,get_failing_students_dao,get_class_avg_dao
+
+statistic_api = APIRouter()
+
+@statistic_api.get('/statistic', summary='查询每次考试都在80分以上的学生')
+def get_top_students(db=Depends(get_db)):
+    q = get_top_students_dao(db)
+    if not q:
+        return []
+    return q
+
+@statistic_api.get('/Score/failing', summary='查询两次以上不及格的学生')
+def get_failing_students(db=Depends(get_db)):
+    result = get_failing_students_dao(db)
+    if not result:
+        return []
+    return result
+
+@statistic_api.get('/Score/class-avg', summary='统计每次考试每个班级的平均分')
+def get_class_avg(db=Depends(get_db)):
+    result = get_class_avg_dao(db)
+    if not result:
+        return []
+    return result

scores/dao/statistic_dao.py

@@ -0,0 +1,78 @@
+from sqlalchemy import func
+from scores.model.score_model import Score
+from students.model.students_model import Students
+from class_management.model.class_management_model import ClassInfo
+
+def get_top_students_dao(db):
+    top_sids = (db.query(Score.sid)
+        .filter(Score.is_deleted == 0)
+        .group_by(Score.sid, Score.num)
+        .having(func.min(Score.score) >= 80)
+        .subquery() )
+
+    results = (db.query(Students.id,
+            Students.name,
+            Score.num,
+            Score.t_subject,
+            Score.score,)
+        .join(Score, Students.id == Score.sid)
+        .filter( Score.sid.in_(top_sids),
+            Score.is_deleted == 0,)
+        .order_by(Students.id, Score.num)
+        .all())
+
+    return [{"sid": r.sid,
+            "name": r.name,
+            "score": r.score,}
+        for r in results]
+
+
+def get_failing_students_dao(db):
+    failing_sids = (db.query(Score.sid)
+        .filter(Score.score < 60,
+            Score.is_deleted == 0,)
+        .group_by(Score.sid)
+        .having(func.count() >= 2)
+        .subquery())
+
+    results = (db.query(
+            Students.sid,
+            Students.name,
+            ClassInfo.name.label("class_name"),
+            Score.num,
+            Score.t_subject,
+            Score.score,)
+        .join(Score, Students.id == Score.sid)
+        .join(ClassInfo, Score.cid == ClassInfo.id)
+        .filter(Score.sid.in_(failing_sids),
+            Score.score < 60,
+            Score.is_deleted == 0,)
+        .order_by(ClassInfo.id, Score.num)
+        .all())
+
+    return [{"sid": r.sid,
+            "name": r.name,
+            "class_name": r.class_name,
+            "num": r.num,
+            "t_subject": r.tsub,
+            "score": r.score,}
+        for r in results]
+
+
+
+def get_class_avg_dao(db):
+    results = (db.query(Score.num,
+            Score.cid,
+            ClassInfo.name.label("class_name"),
+            func.avg(Score.score).label("avg_score"))
+        .join(ClassInfo, Score.cid == ClassInfo.id)
+        .filter(Score.is_deleted == 0)
+        .group_by(Score.num, Score.cid, ClassInfo.name)
+        .order_by(func.avg(Score.score).desc())
+        .all())
+
+    return [ {"num": r.num,
+            "cid": r.cid,
+            "class_name": r.class_name,
+            "avg_score": round(float(r.avg_score), 2),}
+        for r in results]

scores/main.py

@@ -1,19 +1,20 @@
 from fastapi import FastAPI,APIRouter
 from scores.api.score_api import score_api
 from scores.database import engine,Base
+from scores.api.score_api import score_api
 
 # 合并接口
 Scores_API = APIRouter()
 Scores_API.include_router(score_api)
 
-
+# 自测接口
+app = FastAPI(tags=['成绩'], title='成绩管理系统')
 
 if __name__ == '__main__':
-    # 自测接口
+
-    app = FastAPI(tags=['成绩'], title='成绩管理系统')
     app.include_router(score_api)
 
     Base.metadata.create_all(engine)
 
     import uvicorn
-    uvicorn.run('main:app',host='127.0.0.1',port=12346)
+    uvicorn.run('scores.main:app',host='127.0.0.1',port=12346)