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Help with the expression genie

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  • Help with the expression genie

    Hello, I am new - have posted newbie questions within the last couple of weeks....
    I am having difficulty with the expressions. I look at other examples within the A5V9 but do not "have the knack" to writing the expressions. I could "wizard" my way around the less complex functions in Excel - but finding myself truly stuggleing with A5 expression builder.

    What I am attempting to create is a value (number of days based on several items) that could be returned based on the Status of a load (A-active,C-shipped, or blank). If the status of the load is A, then return the value System date <-> date received (number of days)....if C, then return the value from Lotship(table)Dateship (field) - Daterec, lastly if status is blank return 0 or " ".
    What was used with the old version (A4V7) was the following:

    IF(Status="A", System->Date-DateREC, if (Status="C",Lotship->Dateship-DateREC, If (Status=" ",System->Date->,System->Date,System->Date-System->Date)))

    This is used on a form (multiple use) at new input, at browsing, at shipping.
    Thank you for any help you can give me.

  • #2
    Re: Help with the expression genie

    Case() is much easier to construct, IMHO.

    Case([COLOR="Red"]Status="A", System->Date-DateREC[/COLOR], [COLOR="Blue"]Status="C",Lotship->Dateship-DateREC[/COLOR], [COLOR="Magenta"]Status=" ",System->Date[/COLOR])
    The first true statement working left to right causes the paired (color indicated here) result to be returned.

    I would suggest you use date() rather than system->date.

    Case([COLOR="Red"]Status="A", date()-DateREC[/COLOR], [COLOR="Blue"]Status="C",Lotship->Dateship-DateREC[/COLOR], [COLOR="Magenta"]Status=" ",date()[/COLOR])
    There can be only one.


    • #3
      Re: Help with the expression genie

      I placed this into the calculated field (expression area) have got the invalid or incomplete expression.


      • #4
        Re: Help with the expression genie

        Hard to diagnose without a sample database and/or the context.

        You can start by building something that does work and expanding. Try

        Case(Status="A", date()-DateREC)

        if this works, try adding the other logical test,result pairs one at a time. If it doesn't you may need to qualify the DateREC with its table name

        Case(Status="A", date()-sometablename->DateREC)

        Are the DateRec and Dateship in the same table? Is the form built on a set using tables containing both fields?
        There can be only one.


        • #5
          Re: Help with the expression genie

          Well, I am failing my task. I feel perhaps that I am not at all correct in my execution. Would it be better if I zipped the database and emailed?


          • #6
            Re: Help with the expression genie

            DateRec is in Lothead, Dateship is in Lotship.
            Form based on set with both tables, yes


            • #7
              Re: Help with the expression genie

              You can attach a zip of your database here. Meanwhile try

              Case(Status="A", date()-Lothead->DateREC)

              I neglected to ask where the status field is. You may need to qualify that as well.

              Case(Lothead->Status="A", date()-Lothead->DateREC)
              Case(Lotship->Status="A", date()-Lothead->DateREC)


              Normally you do not need tablename-> for the primary table of the set (it is assumed) but you do need it for all other fields from other tables.
              There can be only one.


              • #8
                Re: Help with the expression genie

                I accept with information:that could be returned based on the Status of a load (A-active,C-shipped, or blank). If the status of the load is A, then return the value System date <-> date received (number of days)....if C, then return the value from Lotship(table)Dateship (field) - Daterec, lastly if status is blank return 0 or " ".