create or replace function ems.fn_economics_unlock_day(p_site_id int, p_day date)
returns jsonb
language plpgsql
as $fn$
begin
  delete from ems.audit_day_lock
  where site_id = p_site_id
    and day_local = p_day;

  return jsonb_build_object('locked', false, 'day', p_day);
end;
$fn$;

comment on function ems.fn_economics_unlock_day(int, date) is
  'Odebere zámek dne ekonomiky (DELETE lock).';