Running totals in crystal designer

Question

Hi all!
I want to create a report with running total, that accumulate Balance value for each page.
Total accumulate should be reseted on each new page.
I have a query for report: SELECT CardCode, CardName, Balance FROM OCRD.
And i want a running total for field "Balance" (this total should be reseted on each new page).
In Crystal Designer I create new Running Total Field (in the PageFooter section).
In the Editing Running Total window I fill the following sections:
1) Summary section. Field to summarize: "Command.balance". Type of summary: "sum".
2) Evaluate section. On change of field: "command.cardcode"
3) Reset section. I want to choose PageNumber in the field "on change of field". But there is no any special field in the section "Available tables and fields"
How to reset the running total on each new page?
Thanks in advance

Answer 1

Hi all!
The problem can be solved with report formulas. Probably this information will be useful to somebody.
So, we have the following task: need to calculate subtotals on each page.
Let's look at the solution.
On the first step, create Formula fields:
1) InitPageSum field has formula:
     WhilePrintingRecords; NumberVar PageSum := 0;
2) CalcPageSum field has formula:
     WhilePrintingRecords;
     numberVar PageSum := PageSum + {Command.LineTotal}; // I use command to get field-values from //database
     numberVar PageSum
3) PageBalance field has the following formula:
     WhilePrintingRecords; numberVar PageSum
On the second step we place formula-fields in report sections.
1) Variables initialization.
Insert section in PageHeader area (lets name this section PHa). Drag formula InitPageSum into PHa for zeroing PageSum for each page. Then suppress the section PHa.
2) Increasing subtotal on page.
Create additional section in Details area (Dc). Drag CalcPageSum formula-field on this section (Dc). PageSum variable will be increasing in each line. Suppress the section Dc.
3) Display results.
a) Insert additional section in PageFooter area (let's name it PFa). Drag PageBalance formula-field into this section (PFa). The section PFa should be displayed on each page of the report, except the last page. The formula is:
if PageNumber  <>  TotalPageCount then true else false.
b) Insert additional section in ReportFooter area (let's name it RFa) and make this section the first section of the Report Footer area. Drag PageBalance formula-field into the section RFa. The section RFa should be displayed on the last page only. So, for the Suppress property of this section, create the formula:
if PageNumber  =  TotalPageCount then true else false
We make this adjustment (additional section in report footer area) because we need subtotals directly under the report (and not at the bottom of the page)
Best regards,
Katrine