Replacing the result row with a new row
I have a query which has Tax Category as row and Base(Formula) and Tax Amount as columns. The result row is made as "always display". Now,the customer wants me to suppress the result row and include the row "Total sales including Tax" which contains the sum of the amounts of columns "Base" and "Tax Amounts", and behave as the result of the report.
Can anyone please guide me how to do this.
THanks in advance