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Mask Problem

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  • Mask Problem

    We want to run a update field with giving recno but we want it always 4 digit so recno 1 = 0001 how can we do it?

  • #2
    Re: Mask Problem

    I do not believe it can be done as recno() is numeric and as far as I can tell, anytime a number has leading zeros they are automatically trimmed. Converting to character, however, makes it as easy as:


    Code:
    dim x as c
    dim cnum as c
    cnum=1
    x=padl(cnum,4,"0")
    
    ?x
    = "0001"
    If starting from numeric then use the str() function to first convert to character.

    Only thing I can think of...maybe others will drop by and I will learn something new!! :)
    Mike
    __________________________________________
    It is only when we forget all our learning that we begin to know.
    It's not what you look at that matters, it's what you see.
    Henry David Thoreau
    __________________________________________



    Comment


    • #3
      Re: Mask Problem

      David,

      The following expression can be used in a saved UPDATE OPERATION to assign each record's physical record number to a character type field in the same table. In this case the table being updated is called "Workouts".

      Code:
      padl(ltrim(str(recno("workouts"),4)),4,"0")
      Interpreting this from the "innermost" function to the "outermost" function you can see that:

      a) first the physical record number is obtained
      Code:
      (recno("Workouts")
      b) then the physical record number is converted to character string of length 4
      Code:
      (str(recno("workouts"),4)
      c) then the leading blanks in the new character string are trimmed off
      Code:
      ltrim(str(recno("workouts"),4))
      d) and finally, the resulting string is padded on the left with leading zeros
      Code:
      padl(ltrim(str(recno("workouts"),4)),4,"0")
      Check the help file discussion for an important warning about the use of the RECNO() function. It should not be used as an identifier for records in your table.

      Comment


      • #4
        Re: Mask Problem

        how do we put together all these codes?

        Comment


        • #5
          Re: Mask Problem

          Tom showed you the steps one might use to arrive at the final necessary expression...

          Code:
          padl(ltrim(str(recno("workouts"),4)),4,"0")
          This is all you need.
          There can be only one.

          Comment

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