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Help with Syntax

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    #1

    Help with Syntax

    This expression works well on its own
    Max(Tablesum("Tranzac","Tranzac->Accnbr>'4000'"+".AND. Tranzac->Date < Var->StartDate)","Debit-Credit"),0)
    I am trying to use it inside a function where the parameter is "Field=Value" (Value to be replaced with the above expression). So this whole expression need to be wrapped with " ", and I tried hard to figure out how to modify it once wrapped with the " " but could not get it to work. I know that the " " turn into ' ' but when it gets more complicated I get lost. The final product should look something like this: "Field = Max(Tablesum ( ),0)"
    A hand would be much appreciated.
    Tags: None
    #2
    Re: Help with Syntax

    Hi Gaby,

    How are you using the expression you have created? Would this be on a form or a report, or in a calculated field in field rules?
    Regards
    Keith Hubert
    Alpha Guild Member
    London.
    KHDB Management Systems
    Skype = keith.hubert


    For your day-to-day Needs, you Need an Alpha Database!

    Comment

      #3
      Re: Help with Syntax

      Let's make sure we're on the right track.


      I am trying to use it inside a function where the parameter is "Field=Value"
      You are trying to use a function you have designed yourself? What are you trying to pass to the function? A filter? What does the function do?

      To pass

      Code:
      Max(Tablesum("Tranzac","Tranzac->Accnbr>'4000'"+".AND. Tranzac->Date < Var->StartDate)","Debit-Credit"),0)
      as a filter string, escape all the double quotes.

      Code:
      "Max(Tablesum(\"Tranzac\",\"Tranzac->Accnbr>'4000'\"+\".AND. Tranzac->Date < Var->StartDate)\",\"Debit-Credit\"),0)"
      And if you want to pass the assignment

      Code:
      "field = \"Max(Tablesum(\"Tranzac\",\"Tranzac->Accnbr>'4000'\"+\".AND. Tranzac->Date < Var->StartDate)\",\"Debit-Credit\"),0)\""
      Last edited by Stan Mathews; 04-13-2009, 01:27 PM.
      There can be only one.

      Comment

        #4
        Re: Help with Syntax

        The function it will be used in is Record_add() to create a record in a table and set the value of a field = to the value returned by the expression in question. It will be part of a script on a button.
        Thanks for the explanation Stan, I'll try to digest it and see how it goes.

        Comment

          #5
          Re: Help with Syntax

          why is is not:
          Code:
          t.fieldname = Max(Tablesum("Tranzac","Tranzac->Accnbr>'4000'"+".AND. Tranzac->Date < Var->StartDate)","Debit-Credit"),0)
          if the script is adding directly to a table or
          Code:
          topparent:fieldname.value = Max(Tablesum("Tranzac","Tranzac->Accnbr>'4000'"+".AND. Tranzac->Date < Var->StartDate)","Debit-Credit"),0)
          if the value is being added to a form field?

          BTW..... "Debit-Credit" is a NO-NO for a field name.

          Field Names

          Start by entering a field Name, which can be up to 32 characters. The field name must start with a letter, and can contain the characters A-Z, 0-9, and the underscore character (_). If you use a space in the field name, Alpha Five inserts an underscore in place of the space.
          Mike W
          __________________________
          "I rebel in at least small things to express to the world that I have not completely surrendered"

          Comment

            #6
            Re: Help with Syntax

            Originally posted by gaby_h View Post
            The function it will be used in is Record_add() to create a record in a table and set the value of a field = to the value returned by the expression in question. It will be part of a script on a button.
            Thanks for the explanation Stan, I'll try to digest it and see how it goes.
            You would want

            Code:
            RECORD_ADD("yourtablename,"yourfieldname = "+ Max(Tablesum("Tranzac","Tranzac->Accnbr>'4000'"+".AND. Tranzac->Date < Var->StartDate)","Debit-Credit"),0) )
            There can be only one.

            Comment

              #7
              Re: Help with Syntax

              Yes Stan, works perfectly - many thanks.

              Comment

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