[AccessD] RE: A2k2 / SQL Server dropped indexes

Tom Bolton tom.bolton at donnslaw.co.uk
Wed Aug 31 09:38:37 CDT 2005


Thanks Marty, from this I have a sneaking suspicion that it's something to
do with the indexing on the underlying tables.

My colleague who's dealing with the app in question is going to add some
proper indexing to the SQL table and I'll pass on this info for when he
does.

Again thanks for this!
Tom



-----Original Message-----
From: MartyConnelly [mailto:martyconnelly at shaw.ca] 
Sent: 30-Aug-2005 19:34
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] RE: A2k2 / SQL Server dropped indexes

Some maybes.

When you link a table from an ODBC data source, such as Microsoft SQL 
Server or ORACLE, and that table contains more than one unique index, 
Microsoft Access may select the wrong index as the primary key. Has 
someone been adding indexes to the sql tables

ACC2000: Access May Choose an Unexpected Index as the Primary Key

http://support.microsoft.com/default.aspx?scid=KB;EN-US;207745

ACC2000: Creating Virtual Indexes with SQL Data-Definition Queries
http://support.microsoft.com/kb/q209123

Tom Bolton wrote:

>Morning all
>
> 
>
>We've had a problem in the past here with linking tables into an Access
.mdb
>from a SQL Server database - when the tables are linked, Access decides on
>its own primary key and creates an index.  So far, so good, but then
>seemingly at random Access is dropping the index which results in the table
>becoming read-only.  The problem can be fixed manually, but there's no
>pattern to the behaviour.
>
> 
>
>I cured this before using a bit of ADOX to drop and relink the tables (an
>extra button, but in this case the user was pretty Access-conversant), but
>now in a separate .mdb looking at a different SQL backend, it's happening
>again - to a mission-critical application.
>
> 
>
>Anyone any clues?  I've Googled from top to bottom for this one, and not a
>sausage to be found.
>
> 
>
>Many TIA as always
>
>Tom
>
> 
>
> 
>
> 
>
> 
>
>Tom Bolton
>
>Systems Developer (I.T.)
>
>Donns Solicitors
>
>Tel: 0161 834 3311
>
>Fax: 0161 834 2317
>
> 
>
> 
>
>  
>
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-- 
Marty Connelly
Victoria, B.C.
Canada



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