@Test
void testPostgresNative() {
    final EntityManager entityManager = postgresFactory.createEntityManager();
    entityManager.getTransaction().begin();

    final int count1 = entityManager.createNativeQuery("INSERT INTO custom_post (body, published_at, title) VALUES (?, ?, ?) ON CONFLICT DO NOTHING")
                                    .setParameter(1, "Some body")
                                    .setParameter(2, LocalDate.of(2019, 1, 1))
                                    .setParameter(3, "Some title")
                                    .executeUpdate();

    Assertions.assertEquals(1, count1);

    final int count2 = entityManager.createNativeQuery("INSERT INTO custom_post (body, published_at, title) VALUES (?, ?, ?) ON CONFLICT DO NOTHING")
                                    .setParameter(1, "Some body")
                                    .setParameter(2, LocalDate.of(2019, 1, 2))
                                    .setParameter(3, "Some title")
                                    .executeUpdate();

    Assertions.assertEquals(0, count2);


    entityManager.getTransaction().commit();
    entityManager.close();
}