MySQL INNER JOIN select only one row from second table

Question

I have a users table and a payments table, for each user, those of which have payments, may have multiple associated payments in the payments

Answer 1

This is quite simple do The inner join and then group by user_id and use max aggregate function in payment_id assuming your table being user and payment query can be

select user.id, max(payment.id) from user inner join payment on (user.id = payment.user_id) group by user.id