Previous Month, Current Month, Percent Change

Question

Post Author: lcrawfor
CA Forum: Formula
I need to create a report which shows the count of orders for the previous month, the current month and the percent change. An example follows.I suspect I need to use sql expressions but I can't figure it out. Anbody else know how to do this?Crystal Reports X1, SQL  Server 2005Orders tableCUSTNUMB       VARCHAR(15)ORDER_DATE    DATETIMEREGION             VARCHAR(10)ORDER_NUMB   INTOrders Monthly Summary ReportRegion                     2007 - 07                           2007-08                Percent ChangeEast                           3,478                                 4,568                         31%North                          2,364                                 2,578                          9%South                         7,634                                 7,189                         -6%West                         1,891                                  2,231                        18%Total                        13,665                                16,566                          21%

Answer 1

Post Author: Jagan
CA Forum: Formula
Simplest way would be to use a Command or view to return the count grouped by region,month and just report off that.
Another way I think will work is:
Group on Region (group 1) then Date (group 2).
As you've only got two months of data, presumably restricted by the record selection formula, implicitely ordered by the grouping, in the group 1 header you'll be 'looking' at the 1st month's 1st record so use a formula to calculate and store the count for the 1st month:   count({table.x}, {table.date}, "monthly")
In group 1's footer you'll be 'looking' at the 2nd month's last record; that month's count is also  count({table.x}, {table.date}, "monthly");Suppress the details etc., print these in group 1's footer and use to calculate the %change
Of course, this assume that there's always data for both months, but it's not too tricky to account for this if necessary.