1. SELECT marka, rocznik FROM samochody where kolor = "niebieski"; 2. SELECT COUNT(*) FROM samochody WHERE (marka = 'Toyota' OR marka = 'Opel') AND stan = 'Bardzo dobry'; 3. UPDATE samochody SET stan = 'dobry' WHERE rocznik < 2004; 4. CREATE USER 'jan'@'localhost' IDENTIFIED BY 'janKowalski1@'; 5. GRANT SELECT, INSERT, UPDATE ON samochody TO 'jan'@'localhost';