SELECT SUM(GILImp) 
  FROM CosGiol 
    WHERE 
      GILObr = 'CAR' AND GILCap = '01' AND GilDes = 'ALB' AND 
      GILTip = 'G' AND GILCosto = 'OB' AND GILFech BETWEEN '31/12/2001' AND '09/06/2006';
			
                        
                        sCosGiolG = sCosGiolG + " AND GILImp IS NOT NULL";