[AccessD] Learned something else new today

John W. Colby jwcolby at colbyconsulting.com
Wed Mar 9 06:26:31 CST 2005


No idea.  Is that an Office thing or a Windows thing?  I told him to always
load the whole enchilada when installing Office because I was tired of not
having the various pieces I needed to troubleshoot.

John W. Colby
www.ColbyConsulting.com 

Contribute your unused CPU cycles to a good cause:
http://folding.stanford.edu/

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Rocky Smolin -
Beach Access Software
Sent: Wednesday, March 09, 2005 12:13 AM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] Learned something else new today


They would have had to have the Asian language support loaded as well.  Why 
did they do that?

Rocky

----- Original Message ----- 
From: "John W. Colby" <jwcolby at colbyconsulting.com>
To: "'Access Developers discussion and problem solving'" 
<accessd at databaseadvisors.com>
Sent: Tuesday, March 08, 2005 7:57 PM
Subject: [AccessD] Learned something else new today


>I wrote an app for an insurance call center.  The head tech cheese was  
>trying to get a bunch of report queries to work "easier" which were  
>written  by a young lady they assigned that task.  She had been pulling 
>a result  set
> with dozens of event records for each claim then "cutting and pasting" the
> right ones into excel.  JohnS had turned it into a group by and 
> successfully
> caused it to pull just the result set he wanted.  However a memo field was
> displaying a pair of Chinese characters (literally).  Very strange 
> looking,
> and definitely not what we wanted to see.
>
> It turns out that he had a group by on that field.  Can you guess what 
> it was doing (or my educated guess anyway)?  It took me a few minutes 
> to figure it out!!!
>
> As you probably know, memo fields are not stored in the record, but 
> rather
> a
> (32 bit?) pointer to the memo is stored.  The GroupBy was causing the memo
> field to be evaluated literally, thus it was taking the POINTER and
> displaying (and grouping by) that.  I am also guessing that Access knew 
> that
> a memo is supposed to be text so it was doing an implicit cstr() on the
> pointer to attempt to coerce the value back to text and to display the 
> value
> as a string.  Thus it was displaying Chinese (and other odd) characters.
>
> By changing the GroupBy to a Max (I think anyway) the memo field text 
> reappeared.
>
> I have never actually seen, or found any way to see the actual pointer 
> to the memo field out in the memo area but it certainly appears that 
> using a groupby on that field caused the pointer data itself to be 
> exposed as the "value" of the memo.
>
> Cool huh?
>
> So if your ever seeing a pair of totally weird characters in a group 
> by query, see if the field is a memo with a group by under it.
>
> John W. Colby
> www.ColbyConsulting.com
>
> Contribute your unused CPU cycles to a good cause: 
> http://folding.stanford.edu/
>
>
> --
> AccessD mailing list
> AccessD at databaseadvisors.com
> http://databaseadvisors.com/mailman/listinfo/accessd
> Website: http://www.databaseadvisors.com
> 

-- 
AccessD mailing list
AccessD at databaseadvisors.com
http://databaseadvisors.com/mailman/listinfo/accessd
Website: http://www.databaseadvisors.com






More information about the AccessD mailing list