create table if not exists repo_star
(
    id         bigserial
        primary key,
    repo_uuid  uuid                     not null,
    user_uuid  uuid                     not null,
    created_at timestamp with time zone not null,
    unique (repo_uuid, user_uuid)
);

create unique index if not exists idx_repo_star_repo_user
    on repo_star (repo_uuid, user_uuid);