identity 전략으로 데이터를 등록했을 때

24:13 쯤의 코드 출력을 보면 values 에 null 값이 들어가는
============

Hibernate:

/* insert for

hellojpa.Member */insert

into

Member (name, id)

values

(?, default)

============

저는 이런식으로 나오네요...

@Entity
public class Member {
    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @Column(name = "name")
    private String username;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public Member() {
    }

}

public class JpaMain {

    public static void main(String[] args) {
        
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("hello");
        
        EntityManager em = emf.createEntityManager();
        //code
        EntityTransaction tx = em.getTransaction();
        tx.begin();

        try {
            Member member = new Member();
            member.setUsername("C");

            System.out.println("============");
            em.persist(member );
            System.out.println("============");
            tx.commit(); 

        } catch (Exception e) {
            tx.rollback();
        } finally {
            em.close();
        }
        emf.close();
    }
}