Bug 165897 [Salesforce Project]Table column lost its data when insert a new column to the right
Reproduce steps: 1. Get and install BIRT Salesforce ODA driver. 2. Download the attached BIRT report design. 3. Insert a new column to the right of Negotiation/Review. 4. Input name as "Month Grand Total" and expression as following: row["Prospecting"]+row["Qualification"]+row["NeedsAnalysis"]+row["ValueProposition"]+row["IdDecisionMakers"]+row["PerceptionAnalysis"]+row["ProposalPriceQuote"]+row["NegotiationReview"] 5. Run the report and Negotiation/Review column lost its data.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/expression/ExpressionProcessor.java
* @throws DataException
	 */
	public boolean hasAggregation( IBaseExpression expression ) throws DataException
	{
		boolean hasAggregate = false;
		MultiPassExpressionCompiler helper = new MultiPassExpressionCompiler( rsPopulator,
				baseQuery,
				null,
				null );
		helper.setDataSetMode( isDataSetMode );
		IBaseExpression baseExpression = expression;
		compileBaseExpression( baseExpression, helper );
		hasAggregate = helper.getAggregateStatus( );
		clear( );
		return hasAggregate;
	}
	/**
	 * calculate the aggregate in available iccstates
	 * 
	 * @param computedColumns
	 * @param helper
	 * @throws DataException
	 */
	private void calculate( MultiPassExpressionCompiler helper )
			throws DataException
	{
		List aggrList = helper.getAggregateList( 1 );
		AggregateTable table = helper.getAggregateTable( );
		if ( aggrList == null || table == null )
		{