Spring数据findBy关联的实体列

Question

我有2个具有oneTomany关系的实体。实体1具有实体2的列表。但是，当我尝试使用弹簧数据findByEntity2_entity2colomn时，它会激发一个左外部联接来代替内部联接。

实体1

.ToLongDateString

实体2

Console.WriteLine(dt4.ToShortDateString) 'and show 4/4/2019
Console.WriteLine(dt4.ToLongDateString) 'and show Thursday, April 4, 2019
Console.WriteLine(dt4.ToString("MM/dd/yyyy")) 'and show 04/04/2019

生成的查询

 public class Entity1 {
    @Column(name = "id_alert")
    @Id
    private Integer alertId;
    @OneToMany(mappedBy = "entity1 ", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
    private List<Entity2> email;
}

JPA查询

public class Entity2{

    @EmbeddedId
    private AlertEntityIdentity emailEntityIdentity;

    @MapsId("id_alert")
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "id_alert", updatable = false, insertable = false)
    private Entity1 entity1 ;
}

public class AlertEntityIdentity implements Serializable {

  @Column(name = "id_user",nullable = false)
  private Long userId;

  @Column(name = "id_contact",nullable = false)
  private Integer contactId;

  @Column(name = "id_alert",nullable = false)
  private Integer subscriptionId;
}

如何在不使用本机或HQL查询的情况下更改此行为？