Poprawne złączenie dwóch zapytań Opcje

[wachcio]

Witam

Jak poprawnie złączyć zapytanie:

[SQL] pobierz, plaintext 
SELECT
  SUM(reservations.paid) AS paid,
  SUM(reservations.payment) AS payment,
  SUM(reservations.loan) AS loan,
  SUM(
    reservations.paid - reservations.payment
  ) AS paidMinusPayment
FROM
  reservations
WHERE
  reservations.entry_owner_id = 2
[SQL] pobierz, plaintext 

z następującym

[SQL] pobierz, plaintext 
SELECT
  SUM(costs.value) AS costsSum
FROM
  costs
WHERE
  costs.entry_owner_id = 2
[SQL] pobierz, plaintext