DECLARE
suma NUMBER(5,0);
imie wykladowca.imie%TYPE;
nazwisko wykladowca.nazwisko%TYPE;
BEGIN
SELECT COUNT(s.id_student), w.imie, w.nazwisko INTO suma, imie, nazwisko
FROM student s
JOIN grupa g ON g.id_grupa = s.id_grupa
JOIN zajecia z ON z.id_grupa = g.id_grupa
JOIN wykladowca w ON z.id_wykladowca = w.id_wykladowca
WHERE g.nazwa = 'GRUPA 11'
GROUP BY w.imie, w.nazwisko;
dbms_output.put_line('suma ' || suma);
dbms_output.put_line('imie ' || imie);
dbms_output.put_line('nazwisko ' || nazwisko);
END;
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