JPA @OneToMany with mySql and third join table Without Unique key

Question

您好，在 @OneToMany (mySql db) 应用程序中，我想要一个单独的加入 table。并像这样实施

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long patientInfoId;

@OneToMany
@JoinTable(
        name = "patient_health_issues", 
        joinColumns = {@JoinColumn(name = "patient_id") }, 
        inverseJoinColumns = { @JoinColumn(name = "health_issues_id") }
        )
private List<HealthIssues> healthIssues = new ArrayList<HealthIssues>();

它会创建一个单独的连接 table "patient_health_issues" 以 "health_issues_id" 作为唯一键。

我不需要任何唯一键的地方，是否可以控制不生成唯一键。

Answer 1

在这种情况下它不是 @OneToMany 而是 @ManyToMany

JPA @OneToMany with mySql and third join table Without Unique key

JPA @OneToMany with mySql and a third join table Without Unique key

mysql

jpa

one-to-many

unique-key