Bug 147977 Chart editor does not use container's column bindings
1) create data source 2) create data set: select * from customers 3) create table 4) bind country, customer name to table 5) group by country 6) create a binding for total_by_country which aggregates # of customers in each country. put a data element in group footer and bind to total_by_country 7) in group header put chart 8) in data tab specify inherit from container Result: You see columns for report data set created in step 2. Expected Result: Just 3 columns for the 3 bindings created in 4 and 6.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedQuery.java
if( trans instanceof IGroupDefinition )
		{
			IGroupDefinition gd = (IGroupDefinition)trans;
			key = gd.getKeyColumn( ) != null ? gd.getKeyColumn( ):gd.getKeyExpression( );
		}
		this.exprManager.addBindingExpr( key, resultSetExpressions, groupLevel );
		
		
		Collection subQueries = trans.getSubqueries( );
		Iterator subIt = subQueries.iterator( );
		while ( subIt.hasNext( ) )
		{
			ISubqueryDefinition subquery = (ISubqueryDefinition) subIt.next( );
			PreparedSubquery pq = new PreparedSubquery( this.session, this.dataEngineContext,
					subquery,
					queryService,
					groupLevel );
			subQueryMap.put( subquery.getName(), pq);
			
			subQueryDefnMap.put( subquery.getName( ), new Object[]{
					subquery, new Integer( groupLevel )
			} );
		}
	}
	
	/**
	 * Prepares all expressions in the given collection
	 * 
	 * @param expressions
	 * @param groupLevel