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Packing tables

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  • Packing tables

    I realise there's a lot about packing, re-indexing, compacting in this forum, but I can't find an answer to this particular problem:

    I have a button on a "System maintenance" type of form which packs the sets and some other tables in the database. I'm using a sequence of line like this:
    which works fine until I get to the table on which the form is based. A5 won't let me pack it, not will it let me close it first, both quite understandably. What should I do?


  • #2
    RE: Packing tables

    Base your maintenance form on a dummy table that has no data or very little data in it. That way it doesn't matter whether or not it gets packed or the indexes get updated.


    • #3
      RE: Packing tables

      Thanks, Ohlen, obvious when you think about it!



      • #4
        RE: Packing tables


        Here is a piece of code I use to pack a group of tables. First, I populate an array, tables[], with the table names. Then I use this code. Count is the number of records in the array which I get when I fill the array.

        on error goto error_msg

        no_error = .T.
        for i = 1 to count
        tbl =,FILE_RW_EXCLUSIVE)'//// Only pack if file is open exclusively
        if no_error
        end if
        no_error = .T.


        ui_msg_box("Remove Deleted Records","Deleted records could NOT be removed "\
        +chr(13)+"from "+tables(i)+" file.",UI_INFORMATION_SYMBOL)
        no_error = .F.
        resume next

        I found it is simpler to use an array since it is easier to add or remove names. You can also populate the array using a5.table_enum()



        • #5
          RE: Packing tables

          Thanks, Jerry, looks good!



          • #6
            RE: Packing tables

            you can't pack it because you can not open it in exclusive mode if you have a form open based on the table. Open another form, close your original form, then perform your packing. It would be best to open the forms in "exclusive" mode too, so you can error trap when the the table can not be opened in exclusive mode.