1 INSERT INTO wychowawca (ide,imie,nazwisko,id_klasy) VALUES (1,"Maciej","Stasiak",5);
2 SELECT nazwisko,imie from uczen WHERE `id_klasy`=3 
3 CREATE USER 'K_Pietkiewicz'@'localhost' IDENTIFIED VIA mysql_native_password USING '***';
4 GRANT SELECT, INSERT ON *.* TO 'K_Pietkiewicz'@'localhost' ;