DWUTKA at marlow.com
DWUTKA at marlow.com
Fri Sep 9 00:53:38 CDT 2005
Remind me in the morning, but I know there is a property within an ADO recordset, that if you remove all the records, you can 'reset' the Autonumber (the property is the 'next' number, if I remember correctly....) Drew -----Original Message----- From: Bruen, Bruce [SMTP:Bruce.Bruen at railcorp.nsw.gov.au] Sent: Friday, September 09, 2005 12:46 AM To: Access Developers discussion and problem solving Subject: Re: [AccessD] Autonumber Assigned Immediately Do you mean the old "create a table with the new start number and append it" method or something else? bruce -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of DWUTKA at marlow.com Sent: Friday, 9 September 2005 3:13 PM To: accessd at databaseadvisors.com Subject: Re: [AccessD] Autonumber Assigned Immediately You can 'restart' an autonumber. Drew -----Original Message----- From: Bruen, Bruce [SMTP:Bruce.Bruen at railcorp.nsw.gov.au] Sent: Thursday, September 08, 2005 7:24 PM To: Access Developers discussion and problem solving Subject: Re: [AccessD] Autonumber Assigned Immediately The real problem is that you can only have one autonumber field in a record - so by convention "we" all now expect it to be used as a surrogate key. I have many, many times needed one or more unique identifiers (user visble). Example, in a test management db I need to automagically number a test scenario and also assign a sequential unique number to its execution id. In addition, how many problems could be solved by a "grouped" or restartable autonumber. Quite frankly AFAIC autonumber sucks for all uses. bruce -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of MartyConnelly Sent: Friday, 9 September 2005 10:11 AM To: Access Developers discussion and problem solving Subject: Re: [AccessD] Autonumber Assigned Immediately Just use autonumber keys that are GUID's and watch the tears flow. Charlotte Foust wrote: >And even if they are sequential, it doesn't mean they're consecutive! > >Charlotte Foust > > >-----Original Message----- >From: Ken Ismert [mailto:KIsmert at texassystems.com] >Sent: Thursday, September 08, 2005 3:55 PM >To: Access Developers discussion and problem solving >Subject: Re: [AccessD] Autonumber Assigned Immediately > > > > > >>>IMO, the autonumber field is simply a way to create sequential >>>numbering without writing a bunch code to do so. >>> >>> > >You can't assume Autonumbers are sequential. You can specify random new >values for an Autonumber field. Further, for replication, Access will >change all Autonumber fields to random, to reduce key collisions. > >So, you can only assume that Autonumbers are unique. > >If you change Autonumber modes, knowingly or not, you can be fairly >sure your users will freak when they see "-1.07E+09" as the next >reference number on a report using an Autonumber field. > >-Ken > > -- Marty Connelly Victoria, B.C. Canada -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com This e-mail and any attachments may contain confidential information that is intended solely for the use of the intended recipient and may be subject to copyright. If you receive this e-mail in error, please notify the sender immediately and delete the e-mail and its attachments from your system. 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