Question

I need to list only the first five requests for companies from my database. I have two tables named as Request and Company. There could be any amount of requests for a given company. But, I need to query and list only the first 5 requests of all the companies in my database.

select top 5 *
from Request as r 
    INNER JOIN Company c
    ON r.Company_id=c.Company_ID

I have done the above query but it is returning only the first five from the table not the first five of all members. How can I correct my query?

Answer 1

I think you’re looking for the top 5 requests for each company that exists in your Company table. In that case, you can rank() each request by company in a subselect and then select where the rank is <= 5:

select company_id, request_id
from
    ( select c.company_id, r.request_id, rank() over (partition by c.company_id order by request_id) as Rank
    from request r
    inner join company c on
        r.company_id = c.company_id
    ) ranked
where rank <= 5