create table public.challenges ( id bigint generated by default as identity, answers jsonb not null, details jsonb not null, author uuid not null, problem int8 not null, status varchar(256) not null, created_at timestamp with time zone null default now(), constraint challenges_pkey primary key (id), constraint challenges_author_fkey foreign key (author) references auth.users (id), constraint challenges_problem_fkey foreign key (problem) references public.problems (id) ) tablespace pg_default; alter table public.challenges enable row level security; create policy "Enable insert for everyone" on "public"."challenges" as permissive for insert to public with check (true); create policy "Enable read access for users' own items" on "public"."challenges" as permissive for select to public using (author = auth.uid()); create policy "Enable update access for users' own items" on "public"."challenges" as permissive for update to public using (author = auth.uid()) with check (author = auth.uid())