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Filtering based on total() results in a report

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    Filtering based on total() results in a report

    I am trying to print a report that prints the total purchases by customer. I can do all customers just fine. But when I try to modify the report to filter out customers that purchase under a set amount I get "no pages in this report".

    This is all done in a single table.
    The total spent is a Calculated Field on the report
    total(Auditcc_2003-"Amt,GRP-"customer)
    I am trying to filter out customers that are spending less than $100.00.
    (not per transaction but per the total of all of their transactions)
    The report has
    Group'Customer'
    Group 'Month'
    Detail
    Group 'Month' Footer
    [Customer Number and total values are printed here]
    Group 'Month'
    Group 'Customer'

    I am going to Report/Detail Properties/Records/Filter Expression and entering:
    (total(Auditcc_2003-"Amt,GRP-"customer))"99.99
    I get "There are no pages in the layout"

    (total(Auditcc_2003-"Amt,GRP-"grand))"99.99
    (total(Auditcc_2003-"Amt,GRP-"month))"99.99

    This is where I should filter out the customers?

    Any ideas?
    Thanks for your time
    Don

    #2
    RE: Filtering based on total() results in a report

    Don,

    I believe you may find it better to run a query against the set, and then base an "unfiltered" report on the "currently selected records". The report engine seems to be use a one-pass model. So, totals can be computed at the end of groups, and at the end of the report itself, but not at the beginning. To do it at the beginning it would have to scan all the records, generate a list of qualifying customers, and then run through the filtered list a second time. This is what I think of as a two pass model. I may be wrong but I don't think this is how Alpha Five does it.

    Perhaps others will have better ideas for you. I'll keep watching.

    --tom

    Comment


      #3
      RE: Filtering based on total() results in a report

      There is the possibility of adding a field to the table, calculated, using either a dbsum() or tablesum() function to store the total so that it would be available for filtering purposes.

      You can also design an update operation to calculate the total and store it in the added field.

      The benefit to the latter is that the processing "overhead" is reduced. The drawback is that you must wait while the update is run before you can run th report.
      There can be only one.

      Comment


        #4
        RE: Filtering based on total() results in a report

        I think that another way to go is to make a summation table and do the reports from that. Seems like there should be an easier way from the report writer but as Tom mentioned it seems to make a single pass and has nowhere to hold the Total() information for filtering. I was hoping the it was just a formatting problem with the total() function.


        Thanks for the input.

        Don

        Comment

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