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  • #16
    RE: Sort by Calculated Field

    Doug,

    Did you try running a report with the calculated balance?

    If you do, and that works, then filter the report so that only the balances 0 show.

    Regards,

    Jay Talbott
    Jay Talbott
    Lexington, KY

    Comment


    • #17
      RE: Sort by Calculated Field

      Doug Barr:

      For all it's worth, I'm testing my own application and form for a similar query on an 'enabled' calculated form field with identical behavior as your's in Query by form..... 'Invalid Expression'

      Whew!

      Like the others, I've a bunch of field rule posts to a running balance field in the master upon which I can filter that information in reports and views.

      Ken

      Comment


      • #18
        RE: Sort by Calculated Field

        Doug:

        Minor point first. The initially disabled fields were not included in the form's tab order. You can include them by checking the "tab" box in the field's properties. You can edit its position in the form's tab order as you would any other field (view/set tab order).

        Are the calc fields defined in the form or in the table? It may be that QBF is supported for one but not the other.

        Unfortunately, I am not in a position to test this out at the moment.

        Bill
        Bill Hanigsberg

        Comment


        • #19
          RE: Sort by Calculated Field

          Hi again,

          Check this out:
          ------------------
          Msg ID: 37077
          Subject: RE: query by form Ver. 4.5
          Author: Selwyn Rabins
          Date: 03-12-2001 21:21
          File:

          a5 CAN do qbf on your calc fields.

          however, a calc field that you define at the form level, by default, has its "disabled" property turned on.

          you just need to go to the calc field on the form in design mode, right click. so to field properties. setup tab. uncheck "disabled".

          then you will be able to do qbf on this field.
          ------------------

          I used the search feature to find this thread. It is worth reading in full.

          To my surprise I discovered that I contributed a demo on running QBF on calculated fields. Didn't remember that!

          I should also remember the search feature. We're reinventing the wheel here.

          Bill
          Bill Hanigsberg

          Comment


          • #20
            RE: Sort by Calculated Field

            This is interesting.

            I decided to check a form that I've been working on. I two calculated display fields on my form, I've unchecked the disalbe switch on both of them.

            SUBTOTAL get's it's calculated value by a total() function.
            OLDSUBTOT get's it's calculated value by dbsum() function.

            Both operate correctly and return the same exact value for each record. However, I can only do a query on OLDSUBTOT, and "not" SUBTOTAL.

            Attempting a query on SUBTOTAL {field using total()} returns the same warning you guys are getting.

            Interesting.

            Mike
            Thank you,
            Mike Konoff

            Comment


            • #21
              RE: Sort by Calculated Field

              Mike, I think you're on to something useful here.

              I remember bumping into limitations of total() before. Have found it most useful in the context of a report... not in the context of a form...

              Using dbsum() instead I have built a simple example illustrating how a current balance might be displayed on a form...

              Unzip the attachment to a separate folder. Do not mix it with your development work.

              The design of the calc fields is explained in 'DesignNotes', which you can reach from the startup form.

              -- tom

              Comment


              • #22
                RE: Sort by Calculated Field

                Mike, here's an improved illustration. Two forms are now included.

                OrdHist1 uses embedded browses for the child tables.

                OrdHist2 illustrates how one might do this using a tabbed subform.

                -- tom

                Comment

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