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Access 2007 memo field truncates at 255 chars

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  • Access 2007 memo field truncates at 255 chars


    I'm prototyping an evaluation application to see if Alpha Anywhere is what we want.

    I'm doing this on my desktop machine and running the application server locally. It's convenient for me to use Access as the database, although that will be replaced by MySQL in any production environment.

    I have a query that returns text from a memo field. This returns all the text correctly if I run the query within Access. But if I run it in A5 it is truncated at 255 characters, the normal maximum length of an Access text field.

    Is this an ODBC limitation perhaps? Any help/suggestions welcome.



  • #2
    Re: Access 2007 memo field truncates at 255 chars

    Do you get the same result within the SQL command window? (from the web projects control panel, click on Tools | SQL command window).
    If you do, it is an Alpha issue, if you do not, it is an issue with your grid or your dialog.
    Jay Talbott
    Lexington, KY


    • #3
      Re: Access 2007 memo field truncates at 255 chars

      Yes, within A5 the result is 255 characters long, within Access the whole field is returned correctly. So it is a fault within A5 I think.

      I'm actually using V12 my mistake so I'll repost there but I suspect the ODBC connector is the cause and that probably affects v11 too.


      • #4
        Re: Access 2007 memo field truncates at 255 chars

        I can assure you the A5 doesn't truncate long text fields. It's a bit tough to figure out what you're doing because you've not said how you're viewing the data or getting at the data. Maybe what you're doing seems to truncate but more info is needed.

        Using the Northwind.accdb Access database and the Customers Table, I dropped in a large amount of text into the Address Memo field.

        Then I fired up Alpha Anywhere, latest version, and created an AlphaDAO connection to that database. Now... you mention ODBC but I want to be clear to you want to use an AlphaDAO connection.

        Then I created a Grid, pointed to the connection, pointed to the table, picked the ID, Company, Address. ID and Company are Textbox and Address is TextArea (just 'cause it's prettier, but Textbox is fine too). Then I added another "unbound" Static Text field and I'm writing the length of the Address field to this Static Text field. This is what I get.

        Access mentions that a memo field can hold 65k but that when used in a Web App it truncates at 8k. I'm not seeing that here... and they don't explain the 8k limit... but that's Access for you. I'm mad at Access right now for screwing around with the Object Modified date. As you can see I'm up to 35k in one of the Access records.

        Since you're going to be working with MySQL I wouldn't even bother with testing with Access - they do their own weird stuff sometimes. Stick with testing under MySQL. You don't want to starting working with data... like dates... and find out Access treats them completely different than MySQL does.
        Attached Files


        • #5
          Re: Access 2007 memo field truncates at 255 chars


          My query used the DISTINCT modifier in SQL. This causes truncation if the query is executed via ODBC.

          No idea why this should happen, but it does. Doh!