Bug 200885 Invalid group key column name: _{$TEMP_GROUP_1$} occurs when preview attached report[1102]
Description: Open the attached report design and preview. Actual result: Exception occurs: Invalid group key column name: _{$TEMP_GROUP_1$}_Invalid group key column name: _{$TEMP_GROUP_1$}_ ( 2 time(s) ) detail : org.eclipse.birt.report.data.adapter.api.AdapterException: Invalid group key column name: _{$TEMP_GROUP_1$}_Invalid group key column name: _{$TEMP_GROUP_1$}_ at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.prepare(DataRequestSessionImpl.java:476) at org.eclipse.birt.report.engine.data.dte.DteDataEngine.doPrepareQuery(DteDataEngine.java:100) at org.eclipse.birt.report.engine.data.dte.AbstractDataEngine.prepare(AbstractDataEngine.java:138) at org.eclipse.birt.report.engine.executor.ReportExecutor.execute(ReportExecutor.java:94) at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:59) at org.eclipse.birt.report.engine.internal.executor.dup.SuppressDuplciateReportExecutor.execute(SuppressDuplciateReportExecutor.java:50) at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:59) at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:138) at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:68) at org.eclipse.birt.report.service.ReportEngineService.runAndRenderReport(Unknown Source) at org.eclipse.birt.report.service.ReportEngineService.runAndRenderReport(Unknown Source) at org.eclipse.birt.report.service.BirtViewerReportService.runAndRenderReport(Unknown Source) at org.eclipse.birt.report.service.actionhandler.BirtGetPageAllActionHandler.__execute(Unknown Source) at org.eclipse.birt.report.service.actionhandler.AbstractBaseActionHandler.execute(Unknown Source)
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
if ( ( dest.getInterval( ) != IGroupDefinition.NO_INTERVAL )
				&& ( dest.getIntervalRange( ) != 0 ) )
		{
			return new GroupComputedColumn( groupName,
					expr,
					QueryExecutorUtil.getTempComputedColumnType( interval ),
					GroupCalculatorFactory.getGroupCalculator( src.getInterval( ),
							getColumnDataType( cx, expr ),
							src.getIntervalStart( ),
							src.getIntervalRange( ) ) );
		}
		else
		{
			return new ComputedColumn( groupName,
					expr,
					QueryExecutorUtil.getTempComputedColumnType( interval ) );
		}
	}
	/**
	 * Populate the sortings in a query.
	 * 
	 * @throws DataException
	 */
	private void populateSorting( ) throws DataException
	{
		List sorts = this.baseQueryDefn.getSorts( );
		if ( sorts != null && !sorts.isEmpty( ) )
		{
			IQuery.SortSpec[] sortSpecs = new IQuery.SortSpec[sorts.size( )];
			Iterator it = sorts.iterator( );