统计

2026-09-22 23:01:56 +08:00
parent ffcb40db41
commit 7d5f352c69
4 changed files with 110 additions and 5 deletions
@@ -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]