[AccessD] Autonumber problem

Joe,

This problem has been reported before. Not sure if anyone found exact cause,
but there is a way to reset the autonumber.

ALTER TABLE <tablename> ALTER COLUMN <fieldname> Counter(<seed>,<increment>)

This will reset the autonumber for the next record to be added.

To find the current maximum for each table

SELECT Max( autonumberFieldName) FROM TableName.

Hope this helps.

jack

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Joe O'Connell
Sent: Monday, May 19, 2008 4:18 PM
To: Access Developers discussion and problem solving
Subject: [AccessD] Autonumber problem

There are several tables in an application that have developed "holes"
in the autonumber field.  This is not a problem, except that Access has
lost track of the next autonumber to use so it is reusing the
autonumbers that are no longer in the table.  

For example, the autonumbers may go from 1-100 and then 200-300. Instead
of using 301 as the next autonumber, Access uses 101.  There is no
problem until the autonumber for the new records reaches 199, then
Access attempts to use 200 for the next autonumber.  Since 200 is
already in use, the record cannot be created.

Has anyone else experienced a problem like this?  What is the
recommended method to correct this problem?  Is there a way to reset the
seed for the autonumber to force it to resume after the largest in the
table?

Joe O'Connell

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