title: NonUniqueDiscoveredSqlAliasException: Encountered a duplicated sql alias [ASC_ID] during auto-discovery of a native-sql query
body: <p>I have three tables <code>CREDENTIAL_USER</code>, <code>CREDENTIAL_EXPIRATION</code> and <code>ASC_DETAILS</code> - whose looks like :</p>
  
  <p><code>CREDENTIAL_USER { ASC_ID, name, ITEM}</code>, <code>CREDENTIAL_USER { MONTH, YEAR, ASC_ID}</code> and  <code>ASC_DETAILS {ASCID, NAME, ROLE}.</code> </p>
  
  <p>I executed a simple native SQL join to select only CREDENTIAL_USER.ASC_ID and ASC_DETAAILS.ASCID as :</p>
  
  <pre><code>Query query = entityManager.createNativeQuery("SELECT ad.ASCID,ad.NAME,ad.CRED_EMPLOYEE_FNAME,ad.CRED_EMPLOYEE_LNAME,ad.CRED_EMPLOYEE_EMAIL,ad.CRED_EMPLOYEE_REMINDER,"+
                                " cu.*, ce.*, cl.* FROM ASC_DETAILS ad,CREDENTIAL_USER cu, CREDENTIAL_EXPIRATION ce, CREDENTIAL_LICENSE cl WHERE"+ 
                                " cu.IS_CRD_EMPLOYEE = true AND cl.IS_EMPLOYEE = true AND  ce.LICENSE_ID = cl.LICENSE_ID  AND cu.ASC_ID=ad.ASCID"+ 
                                " AND ce.LICENSE_EXP_YR &gt;= "+year+" AND (ce.IS_LICENSE_YES=1 OR ce.IS_LICENSE_YES=3) AND cu.ASC_ID=ce.ASC_ID AND"+
                                " cu.ID=ce.EMPLOYEE_ID");
               List&lt;Object[]&gt; list = query.getResultList();
  </code></pre>
  
  <p>Its running fine on local, But getting <code>org.hibernate.loader.custom.NonUniqueDiscoveredSqlAliasException: Encountered a duplicated sql alias [ASC_ID] during auto-discovery of a native-sql query</code> </p>
  
  <p>exception on <code>JBoss</code> server</p>
  
  <p><strong>Stack-trace :</strong></p>
  
  <pre><code>23:30:00,300 ERROR [stderr] (pool-10-thread-1) javax.persistence.PersistenceException: org.hibernate.loader.custom.NonUniqueDiscoveredSqlAliasException: Encountered a duplicated sql alias [ASC_ID] during auto-discovery of a native-sql query
  23:30:00,301 ERROR [stderr] (pool-10-thread-1)  at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1361)
  23:30:00,302 ERROR [stderr] (pool-10-thread-1)  at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1289)
  23:30:00,303 ERROR [stderr] (pool-10-thread-1)  at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:261)
  23:30:00,303 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  23:30:00,304 ERROR [stderr] (pool-10-thread-1)  at  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  23:30:00,304 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  23:30:00,305 ERROR [stderr] (pool-10-thread-1)  at java.lang.reflect.Method.invoke(Method.java:616)
  23:30:00,305 ERROR [stderr] (pool-10-thread-1)  at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:310)
  23:30:00,306 ERROR [stderr] (pool-10-thread-1)  at sun.proxy.$Proxy42.getResultList(Unknown Source)
   23:30:00,307 ERROR [stderr] (pool-10-thread-1)  at com.asc.dao.UserDAO.getPendingNotificationCredEmployee(UserDAO.java:991)
  23:30:00,307 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  23:30:00,308 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  23:30:00,308 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  23:30:00,309 ERROR [stderr] (pool-10-thread-1)  at java.lang.reflect.Method.invoke(Method.java:616)
  23:30:00,309 ERROR [stderr] (pool-10-thread-1)  at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
  23:30:00,310 ERROR [stderr] (pool-10-thread-1)  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
  23:30:00,311 ERROR [stderr] (pool-10-thread-1)  at sun.proxy.$Proxy34.getPendingNotificationCredEmployee(Unknown Source)
  23:30:00,311 ERROR [stderr] (pool-10-thread-1)  at com.asc.service.UserService.getPendingNotificationCredEmployee(UserService.java:2661)
  23:30:00,312 ERROR [stderr] (pool-10-thread-1)  at com.asc.service.UserService$$FastClassByCGLIB$$de8fbe27.invoke(&lt;generated&gt;)
  23:30:00,312 ERROR [stderr] (pool-10-thread-1)  at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
  23:30:00,313 ERROR [stderr] (pool-10-thread-1)  at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:617)
  23:30:00,314 ERROR [stderr] (pool-10-thread-1)  at com.asc.service.UserService$$EnhancerByCGLIB$$d2e7fa8d.getPendingNotificationCredEmployee(&lt;generated&gt;)
  23:30:00,314 ERROR [stderr] (pool-10-thread-1)  at com.asc.service.ExpirationNotificationService.sendAlertToAdmin(ExpirationNotificationService.java:47)
  23:30:00,315 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  23:30:00,316 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  23:30:00,316 ERROR [stderr] (pool-10-thread-1)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  23:30:00,317 ERROR [stderr] (pool-10-thread-1)  at java.lang.reflect.Method.invoke(Method.java:616)
  23:30:00,317 ERROR [stderr] (pool-10-thread-1)  at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:273)
  23:30:00,318 ERROR [stderr] (pool-10-thread-1)  at org.springframework.scheduling.support.MethodInvokingRunnable.run(MethodInvokingRunnable.java:65)
  23:30:00,318 ERROR [stderr] (pool-10-thread-1)  at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:51)
  23:30:00,319 ERROR [stderr] (pool-10-thread-1)  at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
  23:30:00,320 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
  23:30:00,320 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
  23:30:00,321 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.FutureTask.run(FutureTask.java:166)
  23:30:00,321 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:165)
  23:30:00,322 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:266)
  23:30:00,323 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
  23:30:00,323 ERROR [stderr] (pool-10-thread-1)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
  23:30:00,324 ERROR [stderr] (pool-10-thread-1)  at java.lang.Thread.run(Thread.java:679)
  23:30:00,325 ERROR [stderr] (pool-10-thread-1) Caused by: org.hibernate.loader.custom.NonUniqueDiscoveredSqlAliasException: Encountered a duplicated sql alias [ASC_ID] during auto-discovery of a native-sql query
  23:30:00,326 ERROR [stderr] (pool-10-thread-1)  at org.hibernate.loader.custom.CustomLoader.autoDiscoverTypes(CustomLoader.java:594)
  </code></pre>