Visual Studio 2013进行Python开发--多表联合查询

Posted 2022-11-03 zhangabo

话不多说，接上一篇文章，直接在views.py中添加如下代码：

@app.route("/Query")
# 上文的写法
def GetUserList():
     #def __init__(self):
        engine = create_engine("mssql+pymssql://sa:123456@127.0.0.1/User?charset=utf8",echo=True,encoding=‘utf-8‘,convert_unicode=True)
       
        DBsession = sessionmaker(bind=engine)    #创建DBsession类
        session = DBsession()    #创建对象
     
        query = session.query(models.User,models.UserOutRightRelation,models.OutRight)
        query = query.join(

        # 取出所有
        models.User,  models.User.RelationGUID == models.UserOutRightRelation.UserGUID).filter(models.User.Telephone==‘15209212730‘).join(models.OutRight,models.OutRight.RelationGUID==models.UserOutRightRelation.RightGUID) .with_entities(models.User.LoginID,models.User.Name,models.UserOutRightRelation.RightGUID,models.OutRight.RightName);


        data = query.all()

   
        data_list = [dict(zip(result.keys(), result)) for result in data]

        return jsonify(‘message‘: data_list)   

filter：过滤条件，

with_entities：显示哪些字段