Question

在我的项目（java struts 2，hibernate）中，我想选择2表之间的连接。

Class User {
  private int userId;
  private String userName;
  private String dateOfBirth;
}

Class Bill {
  private int billId;
  private String dateOfBill;
  private Double moneyOfBill;
  private User user;
}

当我直接尝试使用localhost DB中的sql时，这是可以的

Select * From user u JOIN bill b ON (b.userId=u.userId) Group by b.userId Order by Sum(b.moneyOfBill) asc;

但是我的程序通过hibernate hql

是错误的

From User U JOIN Bill B ON (B.user.userId=U.userId) Group by B.user.userId Order by Sum(B.moneyOfBill) ASC;

eclipse控制台中的错误：

at org.hibernate.hql.ast.QuerySyntaxException.convert（QuerySyntaxException.java:54）在org.hibernate.hql.ast.QuerySyntaxException.convert（QuerySyntaxException.java:47）在org.hibernate.hql.ast.ErrorCounter.throwQueryException（ErrorCounter.java:82）在org.hibernate.hql.ast.QueryTranslatorImpl.parse（QueryTranslatorImpl.java:281）在org.hibernate.hql.ast.QueryTranslatorImpl.doCompile（QueryTranslatorImpl.java:180）在org.hibernate.hql.ast.QueryTranslatorImpl.compile（QueryTranslatorImpl.java:134）在org.hibernate.engine.query.HQLQueryPlan。（HQLQueryPlan.java:101）在org.hibernate.engine.query.HQLQueryPlan。（HQLQueryPlan.java:80）在org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan（QueryPlanCache.java:94）在org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan（AbstractSessionImpl.java:156）在org.hibernate.impl.AbstractSessionImpl.createQuery（AbstractSessionImpl.java:135）在org.hibernate.impl.SessionImpl.createQuery（SessionImpl.java:1650）

请帮忙。谢谢！

Answer 1

试试这个：

SELECT U.userId, U.userName, U.dateOfBirth
FROM Bill B 
JOIN USER U 
GROUP BY U.userId, U.userName, U.dateOfBirth 
ORDER BY SUM(B.moneyOfBill) ASC;

Hibernate JOIN错误语法异常

1 个答案: