Bug 208511 The memory cache issue when preview crosstab in deploy environment[1102]
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataRequestSessionImpl.java
* @param columnBindings
	 * @param boundColumnName
	 * @return
	 * @throws BirtException
	 */
	private IQueryResults getGroupingQueryResults( DataSetHandle dataSet,
			Iterator inputParamBindings, Iterator columnBindings,
			String boundColumnName ) throws BirtException
	{
		assert dataSet != null;
		
		
		
		
		
		
		QueryDefinition query = new QueryDefinition( );
		query.setDataSetName( dataSet.getQualifiedName( ) );
		GroupDefinition group = new GroupDefinition( boundColumnName );
		group.setKeyColumn( boundColumnName );
		query.addGroup( group );
		query.setUsesDetails( false );
		ModuleHandle moduleHandle = sessionContext.getModuleHandle( );
		if ( moduleHandle == null )
			moduleHandle = dataSet.getModuleHandle( );
		QueryExecutionHelper execHelper = new QueryExecutionHelper( this.dataEngine,
				this.modelAdaptor,
				this.sessionContext );
		IQueryResults results = execHelper.executeQuery( query,
				inputParamBindings,