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Need Help Incrementing a Value

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  • Need Help Incrementing a Value

    Hey Guys... I have been trying to figure this out for the past two months but just can't crack it. Here is what I am trying to do.

    Database tracks chemical mixtures. Table has Mixture Name and Version Number. When a new Mixture is created, user enters the Mixture Name and the Version Number is calculated to be 1. If a user wants to create a new version of the mixture, push button and new form opens with identical field values except the Version No has been incremented by 1. Also, if there are 25 versions of one Mixture and the user goes to version number 5 and decides to make a new version, all field values from version 5 would be copied but the Version No would be incremented to 26.

    Below is the pseudocode that Tom Cone sent. I am very new at this but have learned plenty trying to figure this out. There are a few items in this code that I have no idea how to write. I have been trying to do this in Action Scripting. Any help is much appreciated.

    In pseudocode this function would:

    Open the table of mixtures/versions

    Set the index to the concatenated

    Fetch_find the first mixture

    Step through the records until you get to the last version

    Capture and increment that version value

    Enter a new mixture/version record with an incremented field value

    close the supporting table

    Increment the captured value and use it in the new record being entered in the main table.

  • #2
    Re: Need Help Incrementing a Value

    Here's another, and to me, simpler way.

    First, an example from what I do. I have repair orders. Each RO has a series of Repairs. So, RO# 100 might have problem 01, 02, 03, etc.

    The Repairs table has a field for RO_Number. It also has a field for Repair# (Problem_ID, actually) with this expression as a default value (Field Rules / Data Entry tab / Default mode = Simple default expression):

    IF(EXIST(RO_ID, "REPAIR", "RO_ID"), RIGHT("00" + LTRIM(STR(VAL(LOOKUPC("L", RO_ID, "PROBLEM_ID", "REPAIR", "RO_ID"))+1)),2), "01")

    If this record's RO_ID already exists in the Repair table, then it uses the lookup to find the Last value of the Problem_ID for that particular RO in the Repair table, converts it to a value, adds one, converts back to a string.

    If the RO_ID doesn't exist in the table, it begins with a value of "01".
    -Steve
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    • #3
      Re: Need Help Incrementing a Value

      Thanks Steve! I will give it a shot.

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