INSERT INTO table_name (column_list) VALUES (value_list_1), (value_list_2), ... (value_list_n);
INSERT INTO User (name, surname, "roomId") // roomId is with quetes("") because it is case sensitive in this example VALUES ('Joe', 'Travolta', 1), ('Jim', 'Carrey', 2), ('Shakira', 'whenever', 3); // remember about semicolon(;) at the end