统计分析所有测试通过。

StatCalc/dao/statcalc_dao.py

@@ -37,21 +37,47 @@ def get_class_count(g , db):
 
 from scores.model.score_model import Score
 
-def get_score_80(db):
-    sq = ( db.query(Students.id)
-           .join(Score, Score.sid == Students.id)
-           .filter(Score.score < 80 )
-           .group_by(Students.id)
-           .having(func.count(Score.id) > 2 )
-           .all()
-         )
 
-    q = ( db.query(Students.name,ClassInfo.name,Score.score )
-          .join(ClassInfo, ClassInfo.id == Students.class_id)
-          .join(Score, Score.sid == Students.id)
-          .filter(Students.id.in_(sq),Score.score < 80)
-          .all()
-         )
+def get_excellent_students(db):
+    """查询所有科目都在80分以上的优秀学生"""
+    # 先查总科目数
+    total_subjects = db.execute(text("SELECT COUNT(*) FROM subject")).scalar()
+
+    # 子查询：找出成绩>=80分的科目数等于总科目数的学生
+    sq = db.query(Students.id) \
+        .join(Score, Score.sid == Students.id) \
+        .filter(Score.score >= 80) \
+        .group_by(Students.id) \
+        .having(func.count(Score.id) == total_subjects) \
+        .subquery()
+
+    # 主查询：返回优秀学生信息
+    q = db.query(Students.id, Students.name, ClassInfo.name.label('class_name'), Score.score) \
+        .join(ClassInfo, ClassInfo.id == Students.class_id) \
+        .join(Score, Score.sid == Students.id) \
+        .filter(Students.id.in_(sq.select()), Score.score >= 80) \
+        .all()
+    return [row._asdict() for row in q]
+
+
+from scores.model.score_model import Score
+
+def get_score_80(db):
+    """查询有两次以上不及格(<60分)的学生"""
+    # 子查询：找出不及格超过2门的学生ID
+    sq = db.query(Students.id) \
+        .join(Score, Score.sid == Students.id) \
+        .filter(Score.score < 60) \
+        .group_by(Students.id) \
+        .having(func.count(Score.id) > 2) \
+        .subquery()
+
+    # 主查询：返回不及格学生信息
+    q = db.query(Students.name, ClassInfo.name.label('class_name'), Score.score) \
+        .join(ClassInfo, ClassInfo.id == Students.class_id) \
+        .join(Score, Score.sid == Students.id) \
+        .filter(Students.id.in_(sq.select()), Score.score < 60) \
+        .all()
     return [row._asdict() for row in q]
 
 def get_class_avg_dao(db):