Native query with named parameter fails with “Not all named parameters have been set”

Question

I want to execute a simple native query, but it does not work:

@Autowired
private EntityManager em;

Query q = em.createNativeQuery(\"SELECT count(*) FROM my         


        

Answer 1

I use EclipseLink. This JPA allows the following way for the native queries:

Query q = em.createNativeQuery("SELECT * FROM mytable where username = ?username");
q.setParameter("username", "test");
q.getResultList();