SELECT departament.nr_departamentu,departament.nazwa, pensja
FROM pracownik right join departament
WHERE departament.nr_departamentu = pracownik.nr_departamentu;
SELECT nazwa, nazwisko
FROM pracownik p full join zlecenie z right join projekt pr on pr.nr_projektu = z.nr_projektu on p.id_pracownika = z.id_pracownika
WHERE z.id_pracownika is NULL or z.nr_projektu is NULL;
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