हाइबरनेट मूल SQL त्रुटि

Question

मैं हाइबरनेट 3.3.2.GA का उपयोग कर SQL मूल क्वेरी निष्पादित करने का प्रयास कर रहा हूं।

मेरे पास निम्न प्रश्न है। विभाग वर्ग के लिए

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(); 

मानचित्रण फ़ाइल

<?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> 

है लेकिन मैं त्रुटि निम्न हो सकते हैं? यह

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.

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 Error: 904, SQLState: 42000 20:43:41,109 ERROR JDBCExceptionReporter:101 - ORA-00904: "DEPT2"."DEPTNAME": invalid identifier

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

करने के लिए मेरी जिज्ञासा को परिवर्तित किया जाता है ORA-XXX कोड के साथ गूगल की कोशिश करो। से http://www.dba-oracle.com/t_ora_00904_string_invalid_identifier.htm

Question: I am running a SQL statement and I get a SQL*Plus error ORA-00904 invalid identifier.

Answer: When ORA-00904 occurs, you must enter a valid column name as it is either missing or the one entered is invalid. The "invalid identifier" most common happens when you are referencing an invalid alias in a select statement. The Oracle docs note this on the ORA-00904 error:

Answer 2

यह

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

होना चाहिए आप प्रलेखन (18.1.4. Returning multiple entities) द्वारा गुमराह किया गया था, वहाँ एक बग वहाँ (HHH-2976), इसके लिए वोट करने के लिए स्वतंत्र लग रहा है है।