If I understand you correctly, if my table is MyISAM, after I did a
delete query I could just: "ALTER TABLE t2 AUTO_INCREMENT="1"; and
that would cause the auto increment value to be set to 901 (Assuming
900 total current records) on the next insert?
On Aug 29, 2007, at 1:48 PM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
To change the value of the AUTO_INCREMENT counter to be used for new
rows, do this:
ALTER TABLE t2 AUTO_INCREMENT = value;
You cannot reset the counter to a value less than or equal to any that
have already been used. For MyISAM, if the value is less than or equal
to the maximum value currently in the AUTO_INCREMENT column, the value
is reset to the current maximum plus one. For InnoDB, you can use
ALTER
TABLE ... AUTO_INCREMENT = value as of MySQL 5.0.3, but if the
value is
less than the current maximum value in the column, no error message is
given and the current sequence value is not changed.
Ed
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 29, 2007 11:02 AM
To: Jason Pruim
Cc: MySQL List
Subject: Re: Reset a auto increment field?
Is there away to reset an auto incrementing field count? I have a
database that currently has 935 records in it but because I have
deleted a few the current number used for NEW records is 938 :) How
can I get it to count the records and assign a record number based on
the total count?
Hope that makes sense! Thanks for looking! :)
--
Jason Pruim
Raoset Inc.
Technology Manager
MQC Specialist
3251 132nd ave
Holland, MI, 49424
www.raoset.com
[EMAIL PROTECTED]
AFAIK, you need to drop and then recreate the auto-increment field,
otherwise you'll get holes when you delete a record.
David
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--
Jason Pruim
Raoset Inc.
Technology Manager
MQC Specialist
3251 132nd ave
Holland, MI, 49424
www.raoset.com
[EMAIL PROTECTED]
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