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Combining criteria for tablecount()

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    Combining criteria for tablecount()

    I am trying to use the tablecount() function in a report, and have been unable to come up with the correct way of combining the criteria. Despite searching the help and message boards (I know the answer is there somewhere) I can't seem to find it. The following function works fine for a character field:
    Code:
    tablecount("tbl_hstart","Center = 'Home Based'")
    And this works to filter for a date field:
    Code:
    Tablecount("tbl_hstart",between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate))
    How do I use tablecount() to filter for both?

    #2
    Re: Combining criteria for tablecount()

    Probably.

    Code:
    tablecount("tbl_hstart","Center = 'Home Based' .and. "+between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate))
    There can be only one.

    Comment


      #3
      Re: Combining criteria for tablecount()

      Thanks Stan. That was it.

      Comment


        #4
        Re: Combining criteria for tablecount()

        When you're working on these just remember, the filter must be a character string.

        "Center = 'Home Based'" is one
        between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate) evaluates to another

        you concatenate the strings with +
        you tell Alpha to "combine" the filter with .and.

        an equivalent filter would be


        "Center = 'Home Based'" +".and."+between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate)
        There can be only one.

        Comment


          #5
          Re: Combining criteria for tablecount()

          Stan,
          So if I want to change the criteria for the "Center" field from an exact match to one that contains the words "Home Based", why doesn't this work:
          Code:
          Tablecount("tbl_hstart",contains(Tbl_Hstart->Center,"Home Based")+".AND."+between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate))
          I think I'm following your example, but perhaps it has something to do with using a function twice in the filter.

          Comment


            #6
            Re: Combining criteria for tablecount()

            Between_date() is a special function type designed to help you more easily construct filters. Most other functions don't generate a character string in filter usable form.

            You were close. I think this is what you need.

            Code:
            Tablecount("tbl_hstart","contains(Tbl_Hstart->Center,'Home Based')"+".AND."+between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate))
            Note that when we enclose contains(Tbl_Hstart->Center,"Home Based") in outer quotes to make it a character string suitable to use in the filter we have to accomodate the inner quotes around --- Home Based. We can do

            "contains(Tbl_Hstart->Center,\"Home Based\")"

            or

            "contains(Tbl_Hstart->Center,'Home Based')"

            We arrive at the finished product by concatenating three strings.

            "contains(Tbl_Hstart->Center,'Home Based')"+".AND."+between_date("tbl_hstart->Scr_Enroll",Var->SDate,Var->EndDate)
            There can be only one.

            Comment


              #7
              Re: Combining criteria for tablecount()

              Thanks, not only for the answer, but for taking the time with the explanation.

              Comment


                #8
                Re: Combining criteria for tablecount()

                Thank Tom Cone, Jr. for explaining the basics to me until I got the hang of it.

                Once you have the basics down the rest is just repitition.
                There can be only one.

                Comment

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