Question

用户

用户ID
的userName
密码
状态

问题

IssueNum
issueDescription
状态
creationdate

IssueAssigned

issueNumber
issueAssignedTo
issueAssignedBy
评论

在我的primefaces数据表中，我使用以下查询

获取这些值

SELECT I.issue_number, I.issue_describtion, U.first_name,US.first_name 
FROM ISSUES I
LEFT JOIN  ISSUE_ASSIGNED IA
ON  I.issue_number = IA.Issue_number
LEFT JOIN USERS U
ON U.id = IA.assigned_to_user_id
LEFT JOIN USERS US
ON   US.id = IA.assigned_by_user_id

同时也是用户的管理员会将问题分配给其他用户

在MSSQL中，上面的查询工作正常，为U.firstName和US.FirstName提供了正确的记录，因为它们是不同的用户。

MSSQL中的

查询返回

PER-1675        Perform - Evaluation Form Export does not pull any data in Legacy Export Tool (Due 8/14)    Ameh    Sandip
PER-2048        Calculation of scores fails when the lower/upper bound value of a calculation text result is a  Ameh    Sandip

但是在Hibernate中，对于同一个查询，firstName和US.firstName都给出相同的结果

码

@Override
    public List<Object> getIssueListForAssigingIssue (){
        List<Object> allIssueList = getHibernateTemplate()
                .getSessionFactory()
                .getCurrentSession().createSQLQuery("SELECT I.issue_number, I.issue_describtion, IT.issue_type,U.first_name ,US.first_name "
                        + "FROM ISSUES I "
                        + "LEFT JOIN  ISSUE_ASSIGNED IA "
                        + "ON  I.issue_number = IA.Issue_number "
                        + "LEFT JOIN USERS U "
                        + "ON U.id = IA.assigned_to_user_id "
                        + "LEFT JOIN USERS US "
                        + "ON  US.id = IA.assigned_by_user_id ").list();
            return allIssueList;
    }

hibernate中的

查询返回

PER-1675        Perform - Evaluation Form Export does not pull any data in Legacy Export Tool (Due 8/14)    Ameh    Ameh
PER-2048        Calculation of scores fails when the lower/upper bound value of a calculation text result is a  Ameh    Ameh

Answer 1

我能够通过给两个列的别名给出解决方法hibernate在两列之间混淆

相同的查询在MSSQL和Hibernate 3中提供不同的输出

1 个答案: