马睿智牛逼！

PythonProject/api/statistics_api.py

@@ -45,3 +45,8 @@ def get_emp(db=Depends(get_db)):
 def get_salaries(db=Depends(get_db)):
     s=classify_salary(db)
     return s
+
+@StatisticsAPI.get('/avg_salaries',summary='统计每个班级平均薪资')
+def get_avg_salaries(db=Depends(get_db)):
+    s=avg_salary(db)
+    return s

PythonProject/dao/statistics_dao.py

@@ -182,3 +182,15 @@ def classify_salary(db):
     except:
         raise HTTPException(status_code=500,detail='查询异常！')
 
+#统计每个班的平均就业薪资
+def avg_salary(db):
+    try:
+        l=db.query(Student_Model.class_id,func.avg(Employment_info.salary).label('avg_salaries'))\
+        .join(Employment_info,Employment_info.stu_id == Student_Model.stu_id)\
+        .filter(Employment_info.salary>0,Employment_info.delete_status==0,Student_Model.delete_status==0)\
+        .group_by(Student_Model.class_id)\
+        .order_by(func.avg(Employment_info.salary).desc()).all()
+        return l
+    except:
+        raise HTTPException(status_code=500,detail='统计异常！')
+