HP Intelligent Management Center Standard Software Platform - Manual (Page 269)

When you create a running total manually, you need to create three formulas:
• A summary formula.
• A reset formula to set a variable to zero.
• A display formula to display the variable.
In the following procedure, you will create a report that performs the following
functions:
• Maintains a running total of customer orders.
• Groups customer orders and resets the running total for each group.
• Displays the subtotal for each order (the last running total for that order).
To create running totals using a formula
1. Create a report using the sample data, Xtreme.mdb. Link the Customers
and Orders tables and place the following fields from left to right in the
Details section:
{customer.CUSTOMER NAME}
{orders.ORDER ID}
{orders.ORDER AMOUNT}
Note:
Xtreme.mdb is located on the Business Objects Technical Support web
site
http://support.businessobjects.com/samples/ .
2. On the View menu, click Field Explorer.
3.
Select Formula Fields in the Field Explorer dialog box and click
New.
4. Name the formula "RunningTotal" and click Use Editor.
The Formula Workshop appears with Formula Editor active.
5. Enter the following into the Formula box:
WhilePrintingRecords;
CurrencyVar Amount;
Amount := Amount + {Orders.Order Amount};
6. Click the Save and close button on the Formula Workshop.
Crystal Reports 2008 SP3 User's Guide 269
11 Running Totals
Creating running totals using a formula