@Override
    public List<Cvvs> deleteOldRecordsByDate(LocalDateTime created_at) throws Exception {

        String hql = "delete from " + Records.class.getName() + " e where e.created_at <= :created_at";
        TypedQuery<Records> query = entityManager.createQuery(hql, Records.class).setParameter("created_at", created_at);
        List<Records> records = query.getResultList();
        return records;
    }