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How to create variables for summary calculations


Kevin B
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FM Pros:

I am an FM newby and I have a problem related to reporting on a group that represent a fraction of all records, while still included summary info from the total of all records.

My report shows a fraction of all inventory records, but on each sub-summary line needs to include information summarized from the total.

Specifically, I am showing transactions within a date range, and totaling weight shipped for those transaction within that date range, thus the sub-summary provides the net weight shipped in/out during the specified period.

Now I need to have the total for all of the transactions up through the detail date range (a previous balance) as well as a total of all transactions thus providing three lines on the subsummary: Previous Balance (Weight available as of the beginning of the detail range), In/Out (Weight shipped in or out within the detail date range) and Total (Weight currently available, which is the total of the weight field for all records).

I understand the process of showing all records and using a script to loop through and do the calculations. What I am not clear on is how to create the appropriate variables to store all of these values, since I assume that I will need to keep some type of array to store the individual calculations for each subsummary band on the report. I don't know in advance how many subsummary sections there will be on the report. Can someone help illuminate?

Thanks in advance!

Kevin

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One generic way of handling situations like this is to use "Self-Join" relationships.

To access all fields using a self-join regardless of the found set, make a relationship between a global # with true and a # field with true (I set true to auto-enter 1), I'll call it Foo.True. Get the grand total of SomeNumber using the calc: Sum(Foo.True::SomeNumber). This works regardless of the Found Set.

Using the same technique, you can define subsets of the data using other relationships.

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