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form filter expression

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  • #16
    RE: form filter expression

    Ira,
    I'm not seeing how it fails. Could you give me an example to satisfy my curiousity. Thanks.
    John

    Comment


    • #17
      RE: form filter expression

      Thank you all for the help.
      I got the expressions to work with a few calcualted fields. Not near as nice as some of the above inputs though.

      Thanks again
      Duane

      Comment


      • #18
        RE: form filter expression

        Hi Bill,

        Unfortunately, John's nor my expression probally handles begining of year or end-of year crossings. I haven't checked other solutions, but it is a bit trickier than it appears and I'll bet most fail the year crossover. John's equation is probably closest in terms of creating the most compact solution.

        I know how to correct it, but will have to come back to it later today.

        Regards,

        Ira J. Perlow
        Computer Systems Design & Associates
        [email protected]
        Regards,

        Ira J. Perlow
        Computer Systems Design


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        • #19
          RE: form filter expression

          John,

          This is a case of one of those deceptively appearing problems that appears to have a simple solution but doesn't. Here are some failing examples for your expression (and my original solution too);

          Today's Date Record Date
          01/02/2003 12/30/1960
          12/30/2002 01/02/1960

          This is a generic function that works

          function Anniversary as L(recorddate as D,begdate as D,enddate as C)
          ' begdate and enddate must be less than 1 year apart for function to work

          IsAnniversary=.F.

          ' next line checks for any input having a blank date,
          ' in which case it returns False
          If trim(cdate(begdate))=="".or.trim(cdate(enddate))=="".or.trim(cdate(recorddate))==""
          END
          End If

          Anniversary=between(ctod(left(dtoc(recorddate),6)+cyear(begdate)),begdate,enddate).or.between(ctod(left(dtoc(recorddate),6)+cyear(enddate)),begdate,enddate)

          end function


          Combining it into a single expression for the original filter expression question(assuming you don't want to use the global function) looks real messy but results in (make sure you place it all in 1 line of code);


          .not.(trim(cdate(dob))=="").and.(
          between(ctod(left(dtoc(dob),6)+cyear(date()-dow(date())+1)),
          date()-dow(date())+1,date()-dow(date())+7).or.
          between(ctod(left(dtoc(dob),6)+cyear(date()-dow(date())+7)),
          date()-dow(date())+1,date()-dow(date())+7))


          Regards,

          Ira J. Perlow
          Computer Systems Design & Associates
          csd[email protected]
          Regards,

          Ira J. Perlow
          Computer Systems Design


          CSDA A5 Products
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          • #20
            RE: form filter expression

            The equation should have had Anniversary instead of IsAnniversary. Thus corrected it looks like;


            function Anniversary as L(recorddate as D,begdate as D,enddate as C)
            ' begdate and enddate must be less than 1 year apart for function to work

            Anniversary=.F.

            ' next line checks for any input having a blank date,
            ' in which case it returns False
            If trim(cdate(begdate))=="".or.trim(cdate(enddate))=="".or.trim(cdate(recorddate))==""
            END
            End If

            ' Make sure next 2 lines are all in 1 expression line
            Anniversary=between(ctod(left(dtoc(recorddate),6)+cyear(begdate)),begdate,enddate)
            .or.between(ctod(left(dtoc(recorddate),6)+cyear(enddate)),begdate,enddate)

            end function



            Regards,

            Ira J. Perlow
            Computer Systems Design & Associates
            [email protected]
            Regards,

            Ira J. Perlow
            Computer Systems Design


            CSDA A5 Products
            New - Free CSDA DiagInfo - v1.39, 30 Apr 2013
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            CSDA Code Utility
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            • #21
              RE: form filter expression

              Ira,
              I see what you mean.
              In your function (first line) , is enddate supposed to be Character?
              John

              Comment


              • #22
                RE: form filter expression

                John,

                Of course not! But then you knew that. It should be type date!

                Regards,

                Ira J. Perlow
                Computer Systems Design & Associates
                [email protected]
                Regards,

                Ira J. Perlow
                Computer Systems Design


                CSDA A5 Products
                New - Free CSDA DiagInfo - v1.39, 30 Apr 2013
                CSDA Barcode Functions

                CSDA Code Utility
                CSDA Screen Capture


                Comment

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