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Disappearing Data

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    Disappearing Data

    I had a call from a client today and whe was having a unique (to say the least) problem. She has a table with many fields, among them "date" and "charter number". If she selects the date field, then selects to sort a to z, most of the records disappear. If she sorts from z to a, all the records are displayed. The same happens with the charter number field but not any of the other fields. The table is indexed on both date and charter number. The application is running with A5v4.5 run time. I did an index update which didn't do any good. Any ideas?

    #2
    RE: Disappearing Data

    If the index file itself is corrupted you'll need to replace it rather than update. The easiest way is to go to the index window, select the indexes, Ctr-X to remove, click the lightning bolt, answer yes, then click Ctrl-V and click the lightning bolt again.

    Finian
    Finian

    Comment


      #3
      RE: Disappearing Data

      Howard,

      I've seen this occur when the user has entered a bunch of empty records. They sort to the top of the A to Z list, and the display of records (all of which are empty) makes it look like the data disappears. Before doing anything else ask the user to scroll down into the table further.

      -- tom

      Comment


        #4
        RE: Disappearing Data

        I had something similar happen today. I ran the database compact and the records came back???

        Larry

        Comment


          #5
          RE: Disappearing Data

          Larry,

          When you compact, all tables are also reindexed. If the problem was an indexing problem, this would be corrected. You could first try just updating the indexes in the affected table.

          Jerry

          Comment


            #6
            RE: Disappearing Data

            Good thought, Tom, but I couldn't scroll anywhere. I had about half a screen of data and that was all there was.
            Thanks for the response.
            Howard

            Comment


              #7
              RE: Disappearing Data

              Thanks, Larry. I already tried that without success.
              Howard

              Comment


                #8
                RE: Disappearing Data

                The application is running in runtime. I don't think there is any way to remake the indexes, only update them. I tried the update, without success. I finally ran the application with the full program, remade the indexes, and the problem went away. Apparently, unless I am missing something, the user has no way to remake the indexes in runtime, unless the programmer has provided it through scripting.
                Howard

                Comment


                  #9
                  RE: Disappearing Data

                  It sounds like the index file was, indeed, corrupt since remaking it solved the problem when updating did not.

                  The only way to duplicate this action in runtime is to code it. We have an autoindex routine we run nightly on our internet servers. We remove and replace the indexes on key tables as a preventative measure. It's not that difficult to code ...

                  Finian
                  Finian

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