create table first_table (
username varchar(64) primary key,
first_que int,
last_que int
);
insert into first_table values
('usera', 101, 200), ('userb', 201, 300), ('userc', 301, 400);
create table second_table (
username varchar(64) references first_table(username),
submitted_question_number int,
`timestamp` varchar(10)
);
insert into second_table values
('usera', 103, '13-06-2022'),
('usera', 102, '11-06-2022'),
('userb', 201, '12-06-2022'),
('userc', 101, '09-06-2022');