Напредни извештаи од базата (SQL и складирани процедури)
Вкупен број на резервации за храна во текот на претходните 2 месеци
select count(distinct rfpm.reservation_id) as broj_rezervacii_na_hrana from reservation_for_prepared_meal rfpm join prepared_meal pm on rfpm.prepared_meal_id = pm.prepared_meal_id join reservation r on rfpm.reservation_id = r.reservation_id and start_date between now() - interval '2 months' and now()
Вкупен број на настани по месец, вкупен број на гости на настаните, просечна цена на настан по гостин и вкупен промет од сите настани
select extract(month from start_date) as months, count(e.event_id) as num_events, sum(e.number_of_interested_guests) as total_guests, avg(e.price) as avg_price, sum(e.price * e.number_of_interested_guests) as sales from reservation_for_events rfe join reservation r on rfe.reservation_id = r.reservation_id join events e on rfe.event_id = e.event_id group by months
Вкупен број на активности по календарска година, вкупен број на гости на активностите, просечна цена на активност по гостин и вкупен промет од сите активности
select extract(year from start_date) as years, count(a.activity_id) as num_activities, sum(a.number_of_interested_guests) as total_guests, avg(a.price) as avg_price, sum(a.price * a.number_of_interested_guests) as sales from reservation_for_activity rfa join reservation r on rfa.reservation_id = r.reservation_id join activities a on rfa.activity_id = a.activity_id group by years
Просечна плата на секој тип на вработени во Вила Дихово
select ( select count(w.user_id) from waiter w )as waiters_in_villa_dihovo, ( select avg(w.salary) from waiter w )as average_salary_waiter, ( select count(r.user_id) from receptionist r )as receptionists_in_villa_dihovo, ( select avg(r.salary) from receptionist r )as average_salary_receptionist, ( select count(c.user_id) from chef c ) as chefs_in_villa_dihovo, ( select avg(c.salary) from chef c )as average_salary_chef from user_table ut group by 1,2,3;
Нарачки за храна кој ги има направено еден корисник и вкупна сума на плаќање
select pm.user_id, ut.full_name, count(ut.full_name) as broj_naracki_hrana, sum(rfpm.quantity * m.price) as total_sum from prepared_meal pm join user_table ut on pm.user_id = ut.user_id join meal m on pm.meal_id = m.meal_id join reservation_for_prepared_meal rfpm on rfpm.prepared_meal_id = pm.prepared_meal_id join reservation r on rfpm.reservation_id = r.reservation_id group by 1,2
Одржана активност за која што има најголема заинтересираност во последната година
select a.activity_type as aktivnost, sum(a.number_of_interested_guests) as broj_na_zainteresirani_gosti from activities a join reservation_for_activity rfa on a.activity_id = rfa.activity_id join reservation r on r.reservation_id = rfa.reservation_id where r.start_date between now() - interval '1 year' and now() group by a.activity_type order by count(a.number_of_interested_guests) desc limit 1;
Извештај за преглед на популарен тип на соба
select distinct r.room_type, ( select count(r2.reservation_id) where r.room_type = 'Single' ) as single_room_reservation, ( select count(r2.reservation_id) where r.room_type = 'Double' )as double_room_reservation from rooms r join reservation r2 on r.room_id = r2.room_id group by 1;
Преглед на бројот на резервации по категории за секој корисник
select ut.full_name, ( select count(rfa.reservation_id) from reservation_for_activity rfa )as number_reservations_for_activity, ( select count(rfe.reservation_id) from reservation_for_events rfe )as number_reservations_for_events, ( select count(rfpm.reservation_id) from reservation_for_prepared_meal rfpm )as number_reservations_for_meal, ( select count(rfs.reservation_id) from reservation_for_service rfs )as number_reservations_for_service from user_table ut join guests g on ut.user_id = g.user_id join guests_make_reservation gmr on g.user_id = gmr.user_id join reservation r on gmr.reservation_id = r.reservation_id group by 1;
Број на соби во секоја вила
select v.name as villa_name , count(r.room_id) as number_of_rooms from villa v join rooms r on r.villa_id = v.villa_id group by villa_name order by villa_name
Last modified
2 years ago
Last modified on 12/28/22 16:45:40
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