John W. Colby
jwcolby at colbyconsulting.com
Thu May 6 10:07:31 CDT 2004
In fact it reset the autonumber to "last used value +1", i.e. if there were numbers 1-100 still in the table, it would set to 101. Of course if you deleted them all then it would start with 1. Anyway you look at it though, this is a bug. An autonumber is most often used as a PK and a PK is supposed to be unique to the record it was created for. It matters not if that record was deleted, it still existed, was assigned a PK, and no other record should be assigned that PK. John W. Colby www.ColbyConsulting.com -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Heenan, Lambert Sent: Thursday, May 06, 2004 10:26 AM To: 'Access Developers discussion and problem solving' Subject: RE: [AccessD] AutoNumber To Start From 900120 According to Microsoft, when this was a 'feature', you had to delete all the records in a table and then compact the database. Doing so would reset the AutoNumber field to start at 1 the next time records were added. I've never heard of any other circumstance resetting them. Lambert > -----Original Message----- > From: John W. Colby [SMTP:jwcolby at colbyconsulting.com] > Sent: Thursday, May 06, 2004 10:01 AM > To: Access Developers discussion and problem solving > Subject: RE: [AccessD] AutoNumber To Start From 900120 > > >if some specific value of an AutoNumber field is important then the > AutoNumber field is not being used properly (this is an old hobby horse of > mine). > > Amen. > > OTOH I have had to "reset" the autonumber many times, to a value larger > than > the last one used, because something as happened to reset the autonumber > back down to an invalid value. I was simply answering the question. I > figured I'd leave the soap box to someone else for once. ;-) > > John W. Colby > www.ColbyConsulting.com > > -----Original Message----- > From: accessd-bounces at databaseadvisors.com > [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Heenan, > Lambert > Sent: Thursday, May 06, 2004 9:42 AM > To: 'Access Developers discussion and problem solving' > Subject: RE: [AccessD] AutoNumber To Start From 900120 > > > Quite a few replies to this question, but I'm surprised that nobody has > mentioned that if some specific value of an AutoNumber field is important > then the AutoNumber field is not being used properly (this is an old hobby > horse of mine). > > An AutoNumber field is supposed to uniquely identify a specific row in a > table. That's all. The user's need not ever see or know the value of such > an > AutoNumber field, it's used by the database to link related tables > together. > If the value of an AutoNumber field is important to a user then it is > being > given some other meaning, and that's only going to cause problems down the > line. In effect you are storing two pieces of information in one field, > and > that's contrary to the normalization principals we should all at least be > aware of. > > Even Microsoft seem to have woken up to this as A2K+ no longer reset > AutoNumber's on compacting (thanks for testing that John). > > Just my 2 cents. > > Lambert > > > -----Original Message----- > > From: Jim Hewson [SMTP:JHewson at karta.com] > > Sent: Thursday, May 06, 2004 9:22 AM > > To: Access Developers discussion and problem solving > > Subject: RE: [AccessD] Autonumber To Start From 900120 > > > > > > Issue? I thought that was feature. > > > > -----Original Message----- > > From: accessd-bounces at databaseadvisors.com > > [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of John W. Colby > > Sent: Thursday, May 06, 2004 8:23 AM > > To: Access Developers discussion and problem solving > > Subject: RE: [AccessD] Autonumber To Start From 900120 > > > > > > Uhh... yep. At least in A2K and earlier. AXP doesn't seem to do that. > > In > > fact I just tested in A2K SR1 and it isn't resetting the autonumber > > either, > > so a service pack may have fixed that. But it definitely used to be an > > issue so be careful. > > > > John W. Colby > > www.ColbyConsulting.com > > > > -----Original Message----- > > From: accessd-bounces at databaseadvisors.com > > [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Jim DeMarco > > Sent: Thursday, May 06, 2004 8:47 AM > > To: Access Developers discussion and problem solving > > Subject: RE: [AccessD] Autonumber To Start From 900120 > > > > > > Yes this will work. One caveat though: do not compact the db until > you've > > got the seed number you want inserted. Compacting will reset the > > autonumber. > > > > Jim DeMarco > > > > -----Original Message----- > > From: John W. Colby [mailto:jwcolby at colbyconsulting.com] > > Sent: Thursday, May 06, 2004 8:45 AM > > To: Access Developers discussion and problem solving > > Subject: RE: [AccessD] Autonumber To Start From 900120 > > > > > > One way that works with all versions of Access (AFAIK) is to append in a > > dummy record specifying a value one less than the number you want. Then > > go > > in and delete that record. The next record will pick up with the next > > value > > (assuming an incrementing autonumber) > > > > John W. Colby > > www.ColbyConsulting.com > > > > -----Original Message----- > > From: accessd-bounces at databaseadvisors.com > > [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of > > paul.hartland at fsmail.net > > Sent: Thursday, May 06, 2004 8:25 AM > > To: accessd > > Subject: [AccessD] Autonumber To Start From 900120 > > > > > > To all, > > Is there a way of telling the Autonumber where to start from in a > Database > > ? > > Thanks in advance. > > Paul > > > > -- > > > > Whatever you Wanadoo: > > http://www.wanadoo.co.uk/time/ > > > > This email has been checked for most known viruses - find out more at: > > http://www.wanadoo.co.uk/help/id/7098.htm > > -- > > _______________________________________________ > > 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 > > > > > > > > > > > > > > > ************************************************************************** > > ** > > ******* > > "This electronic message is intended to be for the use only of the named > > recipient, and may contain information from Hudson Health Plan (HHP) > that > > is > > confidential or privileged. 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