Question

i’m having a hard time getting the right row from my table.
I’m trying to get some rows by finding emails and i want to get the last email sent to them.
My query is:

select *
from persons p2, (
SELECT p.id,p.name,p.email
FROM persons p, emails e
WHERE p.id = e.person_id
) a
where a.email = p2.email

This query return the list of all the email sent to persons.

Can someone help me with this query, the query need to return list of persons with emails, but each email need to appear one time.

Thanks

Answer 1

Try this variant:

select p.*, tmp.email
  from persons p, (select person_id, email
                     from emails e1
                    where not exists (
                          select 1
                            from emails e2
                           where e1.person_id = e2.person_id
                             and e1.time_sent < e2.time_sent)) tmp
 where p.id = tmp.person_id;