drop table if exists course;

create table course
(
    id         serial primary key,
    teacher_id INT not null,
    name       varchar(140) not null,
    time       TIMESTAMP default now()
);

insert into course
    (id, teacher_id, name, time)
values (1, 1, 'First', '2022-01-17 05:40:00');
insert into course
    (id, teacher_id, name, time)
values
    (2, 1, 'Second course', '2022-01-1 05:45:00');