Question

我有3个相互绑定的实体。
组

@Entity
@Table(name = "`group`")
public class Group implements Serializable {
    @OneToMany(mappedBy = "group",fetch = FetchType.EAGER)
    @Fetch(FetchMode.SUBSELECT)
    private List<Student> students;
}

学生

@Entity
@Table(name = "student")
public class Student implements Serializable {
    @OneToMany(mappedBy = "student",cascade = CascadeType.ALL,fetch = FetchType.EAGER)
    @Fetch(FetchMode.SUBSELECT)
    private List<Rating> ratings;
}

评分

@Entity
@Table(name = "rating")
public class Rating implements Serializable {
    @Temporal(TemporalType.DATE)
    @Column
    private Date date;

    @ManyToOne
    @JoinColumn(name = "id_student")
    private Student student;
}

我需要按ID与所有学生之间的日期进行分组。我尝试这些情况来解决问题

 @Query(value = "select g from Group g INNER JOIN g.students s ON g.id = :id INNER JOIN s.ratings r ON r.student.id = s.id and r.date between :dateStart and :dateEnd GROUP BY g.id")

 @Query(value = "SELECT * FROM Group g INNER JOIN student ON g.id_group = :id RIGHT JOIN rating on student.id_student = rating.id_student and rating.`date` between :dateStart and :dateEnd GROUP BY g.id_group",nativeQuery = true)

 @Query(value = "select g from Group g WHERE g.id = :id and g.students IN (select s from g.students s JOIN s.ratings r where r.date between :dateStart and :dateEnd) GROUP BY g.id")

 @Query(value = "SELECT g from Group g JOIN g.students s ON g.id = :id JOIN s.ratings r on s.id = r.student.id and r.date between :startMonth and :endMonth")

但是这些都不是必须过滤的等级。
在此查询中，所有本地工作

SELECT * from `group` JOIN student ON `group`.id_group = 1 LEFT JOIN rating on student.id_student = rating.id_student and rating.`date` between '2019-02-01' and '2019-02-28';

任何人都知道发生了什么问题或如何将本地查询转换为JPQL？

UPD
为避免有关日期的问题，我对日期使用相同的逻辑以获取日期之间的所有评分。
存储库

@Query(value = "Select r from Rating r where r.student.id = :studentId and r.stageOfApprove = :stageOfApprove and r.date between :startMonth and :endMonth order by r.paragraph.id asc ")
    List<Rating> findAllRatingsByIdStudentAndStageOfApproveGreaterThan(@Param("studentId") Long studentId, @Param("stageOfApprove") Integer stageOfApprove,
                                                                       @Param("startMonth") Date startMonth, @Param("endMonth") Date endMonth);

服务

DateTime currentDate = new DateTime();
DateTime minDays = currentDate.dayOfMonth().withMinimumValue().withTimeAtStartOfDay();
DateTime maxDays = currentDate.dayOfMonth().withMaximumValue().withTimeAtStartOfDay();
ratings = ratingRepository.findAllRatingsByIdStudentAndStageOfApproveGreaterThan(studentId,1,minDays.toDate(),maxDays.toDate());
return ratings;

通过JPA从多个JOIN提取和过滤数据

0 个答案: