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- SELECT COUNT(o.Ocena) liczbaOcen, o.IdPrzedmiot, p.Katedra
- FROM A1_OCENA o
- INNER JOIN A1_PRZEDMIOT p ON o.IdPrzedmiot=p.IDPRZEDMIOT
- GROUP BY o.IdPrzedmiot, p.Katedra
- HAVING COUNT(o.Ocena) = MAX(liczbaOcen)
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