我使用SpringBoot（v2.0）JPA和hibernate（v5.4）。我有3个实体类LaunchGrossSalesBasis，它连接到LaunchModel和LaunchVersionModel。

@Entity
@Data
public class LaunchGrossSalesBasis {
 ...

 @ManyToOne(fetch = FetchType.LAZY)
 @JoinColumn(name = "launch_id")
 private LaunchModel launchModel;

 @ManyToOne(fetch = FetchType.LAZY)
 @JoinColumn(name = "version_id")
 private LaunchModelVersion launchModelVersion;

 ...
} 

@Entity
@Data
@NoArgsConstructor
public class LaunchModel {
 ...
 Integer id;

 // Unidirectional - so no mapping in this class
     ...
}

@Entity
@Data
@NoArgsConstructor
public class LaunchVersionModel {
 ...
 Integer id;

 // Unidirectional - so no mapping in this class
 ...
}

public interface LaunchGrossSalesBasisRepository extends BaseCrudRepository<LaunchGrossSalesBasis, Integer> {

 //working but no effect 
 //@Query("SELECT l FROM LaunchGrossSalesBasis l INNER JOIN l.launchModelVersion v INNER JOIN l.launchModel m WHERE v.id = ?1 AND m.id=?2")  
@Query(value="select * from launch_gross_sales_basis s inner join launch_model m ON s.launch_id = m.id INNER JOIN launch_model_version v ON s.version_id = v.id where s.version_id =?1 and s.launch_id=?2 ", nativeQuery = true)
LaunchGrossSalesBasis findByVersionIdAndLaunchId(Integer versionId, Integer launchId);

... 

}

字符串
当我从服务层调用findByVersionIdAndLaunchId（versionId，launchId）时，我期望只有一个查询，但我总是得到3个查询。

Hibernate: select * from launch_gross_sales_basis s inner join launch_model m ON s.launch_id = m.id INNER JOIN launch_model_version v ON s.version_id = v.id where s.version_id =? and s.launch_id=? 
Hibernate: select launchmode0_.id as id1_52_0_, ... from launch_model launchmode0_ where launchmode0_.id=?
Hibernate: select launchmode0_.id as id1_57_0_, ... from launch_model_version launchmode0_ where launchmode0_.id=?

型
我尝试了许多不同的方法（包括原生），但我总是得到3个查询。我错过了什么？像这样，我有更多的查询，hibernate为一个复杂的函数触发了200多个查询。
任何线索都会很有帮助。先谢谢你了。