Hibernate本机SQL错误

Question

我正在尝试使用hibernate 3.3.2.GA执行sql本机查询.

我有以下查询.

session.createSQLQuery("SELECT {dept1.*}, {dept2.*} FROM Dept d1, Dept d2 WHERE d1.deptId = d2.deptId").
   addEntity("dept1",com.test.pojo.Dept.class).
   addEntity("dept2",com.test.pojo.Dept.class).
   list();

Dept类的映射文件是

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
                                   "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.test.pojo.Dept">
  <id column="deptId" name="deptId" type="long">
   <generator class="native"/>
  </id>
  <version name="version" access="field" column="version"></version>
  <property  name="deptName" type="string" column="deptName"/>

  <set name="emps" cascade="all" inverse="true">
     <key column="deptId"></key>
     <one-to-many class="com.test.pojo.Emp"/>
  </set>
</class>
</hibernate-mapping>

但为什么我得到以下错误？它将我的查询转换为

SELECT dept1.**deptId as deptId1_0_,**dept1.**version as version__0,**dept1.**deptName as deptName1_0 _,**dept2.**deptId as deptId1_1 _,**dept2.**version as version1_1 _,**dept2.**deptName as deptName1_1_**FROM Dept d1,Dept d2 WHERE d1.deptId = d2.deptId.

Hibernate:SELECT dept1.deptId as deptId1_0_,dept1.version as version1_0_,dept1.deptName as deptName1_0_,dept2.deptId as deptId1_1_,dept2.version as version1_1_,dept2.deptName as deptName1_1_ FROM Dept d1,dept d2 WHERE d1.deptId = d2 .deptId 20:43:41,109 WARN JDBCExceptionReporter:100 - SQL错误:904,SQLState:42000 20:43:41,109错误JDBCExceptionReporter:101 - ORA-00904:"DEPT2"."DEPTNAME":无效的标识符

Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not execute query
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:90)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
    at org.hibernate.loader.Loader.doList(Loader.java:2235)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
    at org.hibernate.loader.Loader.list(Loader.java:2124)
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:312)
    at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1723)
    at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
    at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:175)
    at com.test.test.Test1.main(Test1.java:96)
Caused by: java.sql.SQLException: ORA-00904: "DEPT2"."DEPTNAME": invalid identifier
    at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
    at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
    at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:590)
    at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1973)
    at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteDescribe(TTC7Protocol.java:850)
    at oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement.java:2599)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2963)
    at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:658)
    at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:584)
    at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1812)
    at org.hibernate.loader.Loader.doQuery(Loader.java:697)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
    at org.hibernate.loader.Loader.doList(Loader.java:2232)
    ... 7 more

Answer 1

尝试用 Google 搜索 ORA-XXX 代码。来自http://www.dba-oracle.com/t_ora_00904_string_invalid_identifier.htm

问题：我正在运行 SQL 语句，但收到 SQL*Plus 错误 ORA-00904 无效标识符。

解答：出现ORA-00904 时，您必须输入有效的列名，因为该列名缺失或输入的列名无效。当您在 select 语句中引用无效别名时，最常见的情况是“无效标识符”。Oracle 文档在 ORA-00904 错误中指出了这一点：