Dynamic Crystal Report

Question

Hi,
Can someone please help me out here.

I need to display some columns which are part of the table and some which are not, in the crystal report.

For eg. From backend i am getting columnsl like call_Date, sum(p1calls) as "call_total". and i am taking it in the dataset.

i could display "call_date" by just dragging that table column on the report. Now i need to display "call_total" which is not actually a database table column but that is sum(p1calls)(This is not a single value but there is a value in each of the rows).

So, Can someone please tell me how to display this column on report.

Thanks & Regards,
Prash