Најпопуларен производ во wishlists на корисниците во изминатите 6 месеци

select p."name" as Product, p.description as Description
from project.product as p
join(
        select ptw.prod_id, count(ptw.prod_id) as cnt
        from project.product_to_wishlist as ptw
        group by ptw.prod_id
) as pw on p.prod_id = pw.prod_id
join(
                select u.time_stamp, u.product_id
                from project.updates as u
                group by u.product_id, u.time_stamp
)as u on u.product_id = p.prod_id
where now()-interval'6 months' <= u.time_stamp
group by p."name", p.description, pw.cnt, p.prod_id, u.time_stamp
order by pw.cnt desc
limit 1;

Доставувач со највеќе доставени продукти во изминатите 3 месеци

select o.distributor_id as Dostavuvac , sum(d.cnt) as Br_Dostaveni_Produkti
from project.distributor as o
join (
                select count(d.delivery_id) as cnt ,d.distributor_id, d.delivery_id
                from project.delivery as d
                where now() - interval'3 months' <= d."date"
                group by d.delivery_id, d.distributor_id
)as d on o.distributor_id = d.distributor_id
group by o.distributor_id
order by Br_Dostaveni_Produkti desc;