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Help with expression

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    Help with expression

    I have three fields
    1. first name
    2. middle name
    3. ext

    Field 3. Jr, Sr, or II, etc...

    I want to add middle name and ext to the first name field. The problem I have is, I want the field to show a name like John James, Jr or Harry Joe, Sr.

    I want to add a coma after the second name and the extension if there is one. I have tried the expression "isnotblank" and it ads either true or false if the ext field is empty or has the extended name. What I am looking for is the expression to add the coma and the extension if there is one but I don't want the coma if the ext field is blank. Any help will be appreciated. Thanks.

    #2
    RE: Help with expression

    you might try a calculated field or a variable with the formula

    trim(firstname)+" "+trim(middlename)+","+ext

    charlie crimmel

    Comment


      #3
      RE: Help with expression

      I tried this but it adds a coma even if the ext field is blank also and I wind up with John James,

      Comment


        #4
        RE: Help with expression

        Ernest,

        building on Charlie's idea:

        Code:
        trim(firstname)+" "+trim(middlename)+ if(alltrim(ext) = "","",","+ext )

        The IF() function returns alternative values, depending upon whether the condition is met. Can be very handy in cases like this.

        - tom

        Comment


          #5
          RE: Help with expression

          Tom, your explination is a little too deep for me. What are the double "" for?

          Comment


            #6
            RE: Help with expression

            Ernest,

            Quote marks are used to delimit text characters in Alpha Five expressions, just like they were in Alpha Four.

            "Tom Cone" passes the text string Tom Cone to Alpha Five, and Alpha knows it's text cause the quotes surround it.


            Code:
            "    "
            passes 4 blank spaces to Alpha, and alpha knows it's text cause the quotes surround them.


            Code:
            ""
            passes an empty or null string to Alpha, and alpha knows it's text cause the quotes are present. It's empty or null cause there's nothing between the quotes.

            This is the same as how Alpha Four does this.

            --tom

            Comment


              #7
              RE: Help with expression

              Ernest

              If you break down the if() expression syntax, you get this

              Any Type Of Value = IF(LogicalExpression, TrueValue, FalseValue)

              First, check if the ext is blank with a logical expression

              alltrim(ext) = ""

              If that expression is true, return a blank

              ""

              If the expression is not true, return a comma and the extension

              ","+ext

              Plugging each result in the correct place, you get (spaces added for more clarity)

              if(alltrim(ext) = "" , TrueValue, FalseValue)
              if(alltrim(ext) = "" , "" , FalseValue)
              if(alltrim(ext) = "" , "" , ","+ext )

              Jerry

              Comment


                #8
                RE: Help with expression

                Thanks Tom & Jerry, I got It now.

                Comment


                  #9
                  RE: Help with expression

                  if(isblank("ext"),alltrim(firstname)+" "+alltrim(lastname),alltrim(firstname)+" "alltrim(lastname)+", "+alltrim(ext)

                  Works for me,
                  efs

                  Comment

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