diff --git a/.env b/.env
index bbd34b4..30b7315 100644
--- a/.env
+++ b/.env
@@ -1,7 +1,7 @@
 # .env（放项目根目录，每个人自己建，不提交 Git）
     # 用来修改数据库账户密码
 DB_USER=root
-DB_PASSWORD=123456
+DB_PASSWORD=420821
 DB_HOST=localhost
 DB_PORT=3306
 DB_NAME=student_manage_system
\ No newline at end of file
diff --git a/StatCalc/api/statcalc_api.py b/StatCalc/api/statcalc_api.py
index dabea0a..69e4b0b 100644
--- a/StatCalc/api/statcalc_api.py
+++ b/StatCalc/api/statcalc_api.py
@@ -12,11 +12,8 @@ statcalc_api = APIRouter()
     ,summary='人员信息查询'
     ,description=f'查询所有超过30岁的学员的信息。'
                   )
-def get_students( stu:StudentsQuery = Depends()
-                 , db=Depends(get_db)
-                  ):
-    s_dict = stu.model_dump(exclude_unset=True) # 没值的不要
-    result = get_student_dao( s=s_dict , db=db )
+def get_students(db=Depends(get_db)):
+    result = get_age_30( db=db )
     if result:
         return result
     raise HTTPException(status_code=404, detail="没有找到符合条件的学生")
@@ -25,9 +22,7 @@ def get_students( stu:StudentsQuery = Depends()
     ,summary='人数统计'
     ,description=f'统计每个班级的人数以及男生女生的人数。'
                   )
-def get_students( stu:StudentsQuery = Depends()
-                 , db=Depends(get_db)
-                  ):
+def get_students(db=Depends(get_db)):
     s_dict = stu.model_dump(exclude_unset=True) # 没值的不要
     result = get_student_dao( s=s_dict , db=db )
     if result:
diff --git a/StatCalc/dao/statcalc_dao.py b/StatCalc/dao/statcalc_dao.py
index 928c60b..1c3fc5a 100644
--- a/StatCalc/dao/statcalc_dao.py
+++ b/StatCalc/dao/statcalc_dao.py
@@ -1,6 +1,18 @@
-# from StatCalc.model.statcalc_model import
 from StatCalc.schema.statcalc_request import *
 from fastapi import HTTPException
 
+from students.model.students_model import Students
 
+def get_age_30(db):
+    q = db.query(Students).filter(Students.age>=30).all()
+    return q
 
+from class_management.model.class_management_model import ClassInfo
+
+def get_class_count(db):
+    q = (db.query(ClassInfo.id)
+         .join(Students,Students.class_id==ClassInfo.id)
+         .filter()
+         .group_by(ClassInfo.id,Students.sex,)
+         .all())
+    return q
\ No newline at end of file
diff --git a/StatCalc/model/__init__.py b/StatCalc/model/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/StatCalc/model/statcalc_model.py b/StatCalc/model/statcalc_model.py
deleted file mode 100644
index e69de29..0000000
diff --git a/Teachers/main.py b/Teachers/main.py
index 1cd982d..f66527a 100644
--- a/Teachers/main.py
+++ b/Teachers/main.py
@@ -1,6 +1,7 @@
 from fastapi import FastAPI,APIRouter
 from Teachers.model.tea_model import *
 from Teachers.api.tea_api import tea_api
+from Teachers.database import *
 
 # 合并接口
 Teachers_API = APIRouter()
diff --git a/Teachers/model/tea_model.py b/Teachers/model/tea_model.py
index 155f810..6dfb492 100644
--- a/Teachers/model/tea_model.py
+++ b/Teachers/model/tea_model.py
@@ -1,5 +1,4 @@
 from databases import engine_all,Base_all,Session
-from Teachers.database import *
 from datetime import datetime
 from sqlalchemy import *
 import enum
@@ -47,7 +46,7 @@ class Tea(Base_all):
     is_delete = Column(Boolean,default=False,comment='是否删除')
     delete_time = Column(DateTime)
 #科目表
-class Sub(Base):
+class Sub(Base_all):
     __tablename__ = 'subject'
     id = Column(Integer
                 , primary_key=True
diff --git a/class_management/api/class_management_api.py b/class_management/api/class_management_api.py
index 037ba5f..02e95b6 100644
--- a/class_management/api/class_management_api.py
+++ b/class_management/api/class_management_api.py
@@ -22,7 +22,7 @@ def get_one_class(id:int,db=Depends(get_db)):
     res = get_class_dao(c={'id':id},db=db)
     if not res:
         raise HTTPException(status_code=404, detail="该班级不存在或已删除")
-    return ClassResponse(total=1,data=res[0])
+    return ClassResponse(totals=1,data=res[0])
 
 @class_api.get('',summary='多字段查询班级')
 def get_some_classes( num:str|None = Query(None,description='班级编号')
diff --git a/main.py b/main.py
index c0906d6..6432ac7 100644
--- a/main.py
+++ b/main.py
@@ -4,21 +4,21 @@ from scores.main import Scores_API
 from stu_jiuye.main import Shtudent_Jiuye
 from students.main import Students_API
 from Teachers.main import Teachers_API
-from StatCalc.main import StatCalc_API
+# from StatCalc.main import StatCalc_API
 from databases import *
 app = FastAPI(title="学生管理系统")
 
-Base_all.metadata.create_all(bind=engine_all)
-
 
 app.include_router(Classes_API,tags=["classes"])
 app.include_router(Scores_API,tags=["scores"])
 app.include_router(Shtudent_Jiuye,tags=["Employments"])
 app.include_router(Students_API,tags=["students"])
 app.include_router(Teachers_API,tags=["teachers"])
-app.include_router(StatCalc_API,tags=["StatCalc"])
+# app.include_router(StatCalc_API,tags=["StatCalc"])
 
 
+Base_all.metadata.create_all(bind=engine_all)
+
 if __name__ == "__main__":
     def main():
         print("Hello from student-manage-system!")
diff --git a/scores/model/score_model.py b/scores/model/score_model.py
index 7a95ff7..2f5e0db 100644
--- a/scores/model/score_model.py
+++ b/scores/model/score_model.py
@@ -3,10 +3,6 @@ from scores.database import Base
 from datetime import datetime
 from sqlalchemy import DateTime,Column,Integer,String,Float,ForeignKey
 
-
-
-class Score(Base):
-from sqlalchemy import DateTime,Column,Integer,String,Float
 class Score(Base_all):
     __tablename__='scores'
     id = Column(Integer
diff --git a/stu_jiuye/model.py b/stu_jiuye/model.py
index 1bb1ebf..7cc131a 100644
--- a/stu_jiuye/model.py
+++ b/stu_jiuye/model.py
@@ -1,11 +1,8 @@
 from databases import engine_all,Base_all,Session
 from sqlalchemy import ForeignKey
-from student_manage_system import students,classes
 from stu_jiuye.database import DATETIME,Base,Column,Integer,String,DATE
 from datetime import datetime
 
-
-
 class Employments(Base_all):                                            #学生就业信息基类
     __tablename__ = 'Employments'                                   #表名
     id = Column(Integer                                         #主键，自增主键
diff --git a/students/StudentsQuery.sql b/students/StudentsQuery.sql
index 87eb3b4..377ff29 100644
--- a/students/StudentsQuery.sql
+++ b/students/StudentsQuery.sql
@@ -14,3 +14,12 @@ select * from students limit 50;
 
 desc students;
 
+
+select *
+from cast(student_manage_system as BINARY)
+where age >30
+join on
+group by
+having
+order by
+limit
\ No newline at end of file