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Creating an auto-increment number

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  • Creating an auto-increment number

    I am creating a Purchase Order system. The PO Number should be in this format PO2012-00000001 and incrementing by one for each order. The next number will be PO2012-00000002 and so on. When 2013 rolls around (provided the world doesn't end on December 21, 2012) the number should be PO2013-00000001 and so on. The number should start all over again. I have tried several different methods but none of them seemed to work. I can either change the year or the number but not both. I can set to change the year but all PO's within the year has the same PO Number. In other words, for 2012, they are all PO2012-00000001 and doesn't increment. If I set to change the number it ignores the year. POs for 2013 will be PO2012-xxxxxxxx - incremented numbers. If the last number for Year 2012 was PO2012-01838548 then when 2013 rolls around it will be PO2012-01838549. I have tried different settings, masks, auto-increment (on and off), etc. This is my last hurdle in the PO system. I am trying to make it as automatic as possible.

    Any help, thoughts, ideas or brainstorms will be appreciated.

  • #2
    Re: Creating an auto-increment number

    The scenario you describe is not within Alpha's field rules capability to deliver without help. You will need to code your own function to generate the value.
    There can be only one.


    • #3
      Re: Creating an auto-increment number

      Thank you very much, Stan. That was my feeling and it is good to have someone confirm it. I felt I was not looking in the right places. Thank you once again.


      • #4
        Re: Creating an auto-increment number

        I don't know if you need any further help with this but here's my take. For a table named aitest, po number field po_number, this seems to work as a data entry simple default expression.

        FUNCTION new_po AS C ( )
        	new_po = ""
        	last_po_ty = alltrim(tablemax("[COLOR="#FF0000"]aitest[/COLOR]","substr([COLOR="#0000CD"]po_number[/COLOR],3,4) = cyear(date())","[COLOR="#0000CD"]po_number[/COLOR]"))
        	if last_po_ty = "" 'none yet this year
        		new_po = "PO"+cyear(date())+"-"+"00000001"
        		new_po = increment_value(last_po_ty)
        	end if	
        Default value is just new_po().
        Set at start of data entry.
        Skip set to .T.
        There can be only one.


        • #5
          Re: Creating an auto-increment number

          Sample table and importable function attached.

          new_po - 02-15-2013 -1.txt
          There can be only one.


          • #6
            Re: Creating an auto-increment number

            In the interest of being thorough, here's a link to other options too...
            Robert T. ~ "I enjoy manipulating data... just not my data."
            It's all about the "framework." (I suppose an "a5-induced" hard drive crash is now in order?)
            RELOADED: My current posting activity here merely represents a "Momentary Lapse Of Reason."


            • #7
              Re: Creating an auto-increment number

              I think Stan's answer is perfect to close this conversation
              Sample Forms


              • #8
                Re: Creating an auto-increment number

                Hello Stan,

                The solution you gave is for dbf table. How would the code look like if using mysql. I am in a fix to implement it in mysql.



                • #9
                  Re: Creating an auto-increment number

                  If I knew anything about sql in general or mysql in particular I'd be glad to help. Sadly, not able to.
                  There can be only one.