javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not extract ResultSet
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
	at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:458)
	at brj.tests.JunitTests.test2(JunitTests.java:89)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.hibernate.exception.DataException: could not extract ResultSet
	at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:135)
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:89)
	at org.hibernate.loader.Loader.getResultSet(Loader.java:2065)
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1862)
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838)
	at org.hibernate.loader.Loader.doQuery(Loader.java:909)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
	at org.hibernate.loader.Loader.doList(Loader.java:2551)
	at org.hibernate.loader.Loader.doList(Loader.java:2537)
	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2367)
	at org.hibernate.loader.Loader.list(Loader.java:2362)
	at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:496)
	at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
	at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:229)
	at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1260)
	at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
	at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573)
	at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:449)
	... 24 more
Caused by: java.sql.SQLException: Operand should contain 1 column(s)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4190)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4122)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2818)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2157)
	at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2324)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:80)
	... 40 more