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Mar 22nd, 2019
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  1. SELECT P.ID_PLYWALNI, K.ID_KLIENTA, K.IMIE, K.NAZWISKO
  2. FROM UDZIAL U LEFT JOIN KLIENT K
  3. ON U.ID_KLIENTA = K.ID_KLIENTA
  4. INNER JOIN ZAJECIE Z
  5. ON Z.ID_ZAJECIA = U.ID_ZAJECIA
  6. INNER JOIN PRACOWNIK P
  7. ON P.ID_PRACOWNIKA = Z.ID_PRACOWNIKA
  8. GROUP BY P.ID_PLYWALNI, K.ID_KLIENTA,K.IMIE,K.NAZWISKO
  9. HAVING COUNT(U.ID_ZAJECIA ) > (SELECT COUNT (UD.ID_ZAJECIA) / COUNT (KL.ID_KLIENTA)
  10. FROM UDZIAL UD FULL OUTER JOIN KLIENT KL
  11. ON UD.ID_KLIENTA = KL.ID_KLIENTA)
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