Hibernate生成的Select查询中存在重复列
我对hibernate生成的HSQL语句有一个问题,我发现在获取实体及其一对多对应项时,Select查询具有重复的列。我的类定义如下所示Hibernate生成的Select查询中存在重复列,hibernate,Hibernate,我对hibernate生成的HSQL语句有一个问题,我发现在获取实体及其一对多对应项时,Select查询具有重复的列。我的类定义如下所示 @javax.persistence.Entity @Table(name = "SCHOOL") public Class School implements Serializable { @Id private long id; @Column(name="NAME") private String name; @Colu
@javax.persistence.Entity
@Table(name = "SCHOOL")
public Class School implements Serializable {
@Id
private long id;
@Column(name="NAME")
private String name;
@Column(name="ZIP_CODE")
private String zipCode;
@OneToMany
@JoinColumn(name="NAME", referencedColumnName="SCHOOL_NAME")
private Set<Student> students= new HashSet<Student>();
/*
*
*followed by other variable definitions, getters and setters
*/
}
@javax.persistence.Entity
@Table(name = "STUDENT")
public Class Student implements Serializable {
@Id
private long id;
@Column(name="FNAME")
private String fName;
@Column(name="LNAME")
private String lName;
@Column(name="SCHOOL_NAME")
private String schoolName;
@Column(name="DOB")
private Date dateOfBirth;
/*
*
*followed by other variable definitions, getters and setters
*/
}
(上面的查询在这里发布之前做了一些调整。)
请建议一个解决方案,使用它我可以消除SELECT查询中的重复列
注意:我使用的是hibernate 4.2.7和hibernate-jpa-2.0-api
Criteria criteria = session.createCriteria(School.class);
criteria.add(Restrictions.in("zipCode", 56789));
List<School> schools = criteria.list();
select
this_.ZIP_CODE as ZIP_CODE1_16_3_,
this_.name as NAME_16_3_,
this_.LICENSE_NUM as LICENSE_N3_16_3_,
student3_.FNAME as ZIP_CODE1_16_5_,
student3_.LNAME as NAME_16_5_,
student3_.GRADE as GRADE4_16_5_,
student3_.ETHNICITY as ETHNICITY5_16_5_,
student3_.SCHOOL_NAME as SCHOOL_NA6_16_5_,
student3_.FNAME as ZIP_CODE1_14_5_,
student3_.LNAME as NAME_14_5_,
student3_.GRADE as GRADE4_14_5_,
student3_.ETHNICITY as ETHNICITY5_14_5_,
student3_.SCHOOL_NAME as SCHOOL_NA6_14_5_,
student3_.FNAME as ZIP_CODE1_14_1_,
student3_.LNAME as NAME_14_1_,
student3_.GRADE as GRADE4_14_1_,
student3_.ETHNICITY as ETHNICITY5_14_1_,
student3_.SCHOOL_NAME as SCHOOL_NA6_14_1_
from
SCHOOL this_,
STUDENT student3_
where
and this_.name=student3_.SCHOOL_NAME(+)
and this_.ZIP_CODE=56789;