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Change value of a field in certain records based on values in other fields

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    Change value of a field in certain records based on values in other fields

    I've searched and couldn't find anything that exactly applies to what I'm trying to do. I have a table that I've added a field to. Going forward, it will have five possible values, but current records in the table will need to be changed to reflect one of two values. To make it as simple as possible, here is the very basic concept:

    The existing fields are Program_Year and Application_Status. The new field is Current_Status.

    I need to change all existing records as follows:

    if Program_Year < "2011" then
    if Application_Status = "A" then
    Current_Status = "X"
    end if
    elseif
    Current_Status = "0"
    end if

    How do I perform this on every record in the table? I come from Paradox where it would be a simple Changeto query, but there seems to be no such mechanism in Alpha Five.

    #2
    Re: Change value of a field in certain records based on values in other fields

    An update operation will do this using the optional condition.
    There can be only one.

    Comment


      #3
      Re: Change value of a field in certain records based on values in other fields

      Ah! Okay, I'll look into that right now. Thanks a bunch, Stan. Somehow, I figured you'd be the first to respond. :-)

      Comment


        #4
        Re: Change value of a field in certain records based on values in other fields

        The logic of your IF statements seems to overlook some possibilities.

        If the program_year is < "2011" but Application_Status is not "A", what should happen?

        did you mean to say:
        Code:
        if Program_Year < "2011" .AND. Application_Status = "A" then 
             Current_Status = "X"
        else
             Current_Status = "0"
        end if

        Comment


          #5
          Re: Change value of a field in certain records based on values in other fields

          Tom,

          I agree. I made a screenshot to post but the board died before I could attach it

          Code:
          Field to be updated Expression Condition
          Current_Status      "X"        Program_Year < "2011" .AND. Application_Status = "A"
          Current_Status      "O"        Program_Year >= "2011" .AND. Application_Status = "A"
          Current_Status      "O"        Program_Year < "2011" .AND. Application_Status != "A"
          Or something similar depending on the intent.

          I suppose one could update all records current_status to "O" and then update just per the first line above, if that is the desired outcome.
          There can be only one.

          Comment


            #6
            Re: Change value of a field in certain records based on values in other fields

            Tom,

            Yes, you're right, that was the logic I meant to type. And Stan, that's pretty close to what I did. I'm still massaging the data. I think at least one of my Paradox queries was flawed when I was exporting the data. I may have to re-attempt the export-import. (Of course that has nothing to do with this.)

            Thanks again for the help, gentlemen.

            Comment

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