from sqlalchemy import func, desc # 根據聚合查詢總收入,按總收入逆序 s= db.session.query(TpOrders.room_type_id, (func.sum(TpOrders.real_income)).label('total_real_income'), func.count(TpOrders.id)).group_by(TpOrders.room_type_id).order_by( desc('total_real_income')).all() # 根據日期(年月日,忽略時分秒)進行分組統計查詢 date_income_query = db.session.query(func.date_format(TpOrders.check_out_date, '%Y-%m-%d').label('date'), func.sum(TpOrders.real_income),func.count(TpOrders.id)).group_by('date').all()