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SQLodev7

sql sorguları patika odev 7

Aşağıdaki sorgu senaryolarını dvdrental örnek veri tabanı üzerinden gerçekleştiriniz.
1.film tablosunda bulunan filmleri rating değerlerine göre gruplayınız.

SELECT rating,title from film
group by rating,title;


2.film tablosunda bulunan filmleri replacement_cost sütununa göre grupladığımızda film sayısı 50 den fazla olan replacement_cost değerini ve karşılık gelen film sayısını sıralayınız.

SELECT replacement_cost,count() from film
group by replacement_cost
having count(
)>=50
order by replacement_cost,count();


3.customer tablosunda bulunan store_id değerlerine karşılık gelen müşteri sayılarını nelerdir?

SELECT store_id,count(
) from customer
group by store_id;

4.city tablosunda bulunan şehir verilerini country_id sütununa göre gruplandırdıktan sonra en fazla şehir sayısı barındıran country_id bilgisini ve şehir sayısını paylaşınız.

SELECT country_id,count() from city
group by country_id
ORDER BY count(
) DESC
LIMIT 1;

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