1. SELECT `marka`, `rocznik` FROM `samochody` WHERE `kolor` LIKE 'niebieski' 
2. SELECT count(*) FROM `samochody` WHERE `marka` IN('Toyota', 'Opel') AND `stan` LIKE '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.samochody TO 'jan'@'localhost'; 