Re: Create unique non-autoincrement key for 700,000 records?

update mytable set hash_field = md5(AutoIdField + unix_timestamp()) I _think_ I understand that - - - - but what does the "AutoldField" variable mean? On Monday, December 15, 2008, at 09:37PM, "Bastien Koert" <phpster@gmail.com> wrote: >On Mon, Dec 15, 2008 at 9:29 PM, Rob Gould <gouldimg@mac.com> wrote: > >> I have a mySQL database with 700,000 records in it, which are presently >> keyed with an "auto-increment" field. >> >> What I'd like to do is create another field with a field where each and >> every record number has a unique keyvalue. Example: "su5e23vlskd" for >> records 1, and "34fdfdsglkdj4" for record 2. All that matters is that it's >> unique, and isn't a number that can be guessed or an "autoincrement" number, >> where a hacker can just figure out the keyvalue by incrementing numbers. It >> doesn't matter to me if each keyvalue field is just numbers, or a >> number/letter combination - - - all that matters is that each keyvalue field >> is unique. Is there an automatic way that mySQL could do that, or would I >> need to write a php script to somehow go through each record and create this >> unique value? >> >> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> >update mytable set hash_field = md5(AutoIdField + unix_timestamp()) > >-- > >Bastien > >Cat, the other other white meat >