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memo field problems

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    #1

    memo field problems

    An application that has been running ok for a number of years... started with A5V5 is now A5V11... has problems with a memo field.

    I first noticed that many of the records had blank values in the memo field. Almost every record has a short note in the memo field, so this was alarming.
    I tried reindex, compact... nothing worked.

    I always do at least one backup every 2 or three days so i was able to unzip a backup to a new folder, add the table with the correct memo fields to the application & post the memo fields to the table that had the missing values... everything seemed to work... BUT... on closer inspection I noticed that the posted fields were not for the correct records!!! RATS !!!

    The Post operation keyed on OrderNumber which is unique... the fields should have been posted to the correct record...

    The only other abnormal observation was that there were a lot of fields with $$ in the database folder. There are usually 5 or 6 per month but this time there were over 250!!!

    I NEED HELP !!!
    Tags: None
    #2
    Re: memo field problems

    I don't think you can copy a memo file (fpt) from one folder-older version, using windows exploerer, and paste into another. A memo field will always be a field tied to a table, and I'm pretty sure that you must copy the dbf, fpt, and cdx in order for it to work. I don't really know why, but it has to do with them being in synch.
    Cole Custom Programming - Terrell, Texas
    972 524 8714
    [email protected]

    ____________________
    "A young man who is not liberal has no heart, but an old man who is not conservative has no mind." GB Shaw

    Comment

      #3
      Re: memo field problems

      Hi Martin
      Thanks for responding...

      I didnt copy / paste... i unzipped the entire (backup) database to a new folder... then I added the table from the unzipped backup to the database where the memo fields were missing. Then i created a post operation to post the fields from the unzipped Orders table to the Orders table where the fields were missing. It seemed to work... except for the 'minor detail' of incorrect indexing to the correct record!!??

      So... my problem is: how do I get my memo fields back???

      Thanks
      D

      Comment

        #4
        Re: memo field problems

        Not sure what you mean by 'posting'
        Is the memo field in a table by itself, or in a bigger table with a lot of user data?
        I always have memo's in a separate table.

        If the memo is in a table with a lot of other user data, I would suggest first emptying all memo data, most likely with a script reading record by record and doing a change setting the memo to ""

        then, I would open both tables, the "good" table and the "bad" table and set them both to using the key index
        read the table record by record in the good table, do a fetch find in the second table, and write the memo data from the one to the other with a change_begin/end
        Cole Custom Programming - Terrell, Texas
        972 524 8714
        [email protected]

        ____________________
        "A young man who is not liberal has no heart, but an old man who is not conservative has no mind." GB Shaw

        Comment

          #5
          Re: memo field problems

          <tbl>.memo_check()
          There can be only one.

          Comment

            #6
            Re: memo field problems

            well... i think that this will have to remain a mystery...
            I tried the <tbl>.memo_check()... tried running from script & from interactive (as displayed in help)... just returned "" and no memo field values were recovered for any records.

            I gave up on the unzip a previous version of the application to a new folder... dropping the orders.dbf table... adding the table to the application with the corrupted orders->memo field... and posting (using a post operation) the memo field from the added table (restored from previous version), to the corrupted table: This resulted in a) partial fields being posted and b) partial and complete fields being posted to the wrong record.

            So... i ended up restoring the application (from a backup on a date where the memo field was not corrupted) to the production directory... which worked fine... except all the data that had been entered between last Friday (when the memo field was not corrupt) and yesterday had to be reentered... well it will be over the next day or so... we will hire a temp to key in the lost data... RATS!!!

            Thanks Stan... Thanks Martin... even though it didnt work, i really appreciate your help!

            Comment

              #7
              Re: memo field problems

              Don't know if you've ever seen this on www.learn alpha.com

              http://www.learn alpha.com/MemosThat...osThatWork.htm
              There can be only one.

              Comment

                #8
                Re: memo field problems

                Thanks Stan... yes i have Dr Wayne's book and i have read his article on memo fields.

                Maybe you can help me understand the <tbl>.memo_check() code in the help


                dim result as C
                dim fn as P
                result = t.memo_check("v")
                If (result <> "") then
                t.memo_check("P", .t.)
                fn = t.filename_get()
                fn = stritran(fn, ".dbf", ".memo_errors")
                end if
                t = table.open("orderhistory")
                t.memo_check("V")
                t.close()

                result = t.memo_check("v") executes before t is defined

                both of the following lines result in a 'type-mismatch' error
                fn = t.filename_get()
                fn = stritran(fn, ".dbf", ".memo_errors")

                ? what is the function of the following line?
                t.memo_check("V")

                Thanks Stan... it's got me a bit confused.

                Comment

                  #9
                  Re: memo field problems

                  The example code is Not complete. It needs to be adapted to your app.

                  The help system explains the methods used in the example code.

                  Comment

                    #10
                    Re: memo field problems

                    As Tom says, the examples are not complete.

                    Try
                    Code:
                    t = table.open("yourtablename")
dim result as C
dim fn as P
result = t.memo_check("v")
If (result <> "") then
t.memo_check("P", .t.)
fn = t.filename_get()
fn = stritran(fn, ".dbf", ".memo_errors")
end if
                    There can be only one.

                    Comment

                      #11
                      Re: memo field problems

                      Thanks Stan...

                      I know that the code must be modified... but most code found in the help system is a bit more useable..
                      for example fn is dimmed as P... should be C... and in the example t is used before being defined.

                      I realize that I am being way too pickey... but it mat save some time for other users.

                      Thanks for your help

                      Comment

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