JOIN and GROUP_CONCAT with three tables

Question

I have three tables:

users:        sports:           user_sports:

id | name     id | name         id_user | id_sport | pref
---+--------  ---+------------           


        

Answer 1

I think this is just a simple join and aggregation:

select u.id, u.name, group_concat(s.name order by pref separator ',')
from user_sports us join
     users u
     on us.id_user = u.id join
     sports s
     on us.id_sport = s.id
group by u.id, u.name