Código SQL [-]Select A1 + B1 + C1 .... From (Select ((Sum(columna A)) * 4.9) as A1, ((Sum(columna B)) * 6.4) as B1, ... )
Select A1 + B1 + C1 .... From (Select ((Sum(columna A)) * 4.9) as A1, ((Sum(columna B)) * 6.4) as B1, ... )