Bug 122854 There is redundant columns in "available columns" list in "export data" dialog.
Description: There is redundant columns in "available columns" list in "export data" dialog. Steps to reproduce: 1. Preview attached design in web viewer. 2. Select the table and click on "export" button. 3. There is a "detail" column name in "available columns" list which is not data set column.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
queries = itemQuery.getReportQueries( parentQuery );
				}
				catch ( BirtException ex )
				{
					logger.log( Level.WARNING, ex.getMessage( ), ex );
				}
				if ( queries != null )
				{
					item.setQueries( queries );
					for ( int i = 0; i < queries.length; i++ )
					{
						
						if ( queries[i] != null )
						{
							if ( queries[i] instanceof IQueryDefinition )
							{
								this.queryIDs.put( queries[i], String
										.valueOf( item.getID( ) )
										+ "_" + String.valueOf( i ) );
								this.queries.add( queries[i] );
								
								
								Collection bindings = ( (IQueryDefinition) queries[i] )
										.getInputParamBindings( );
								if ( bindings.size( ) > 0 )
								{
									if ( parentTrans != null )
									{
										Iterator iter = bindings.iterator( );
										while ( iter.hasNext( ) )