 | | | Conditional insert or update. | Conditional insert or update. 2005-07-20 - By Gleb Paharenko
Back
Hello.
Please, provide more information on your's application logic.
To catch events which occurs for the table use triggers. See:
http://dev.mysql.com/doc/mysql/en/triggers.html
Unfortunately they're available only in MySQL 5.0.x, which is still
beta.
Paul Halliday <paul.halliday@(protected)> wrote:
> Hi,=20
>
> I have a table that looks something like this:
>
> ip | mac_current | mac_change
>
> now if I have an entry that looks like this
>
> 10.0.0.1 | 11:11:11:11:11:11:11 | NULL
>
> If the next time the script runs and the mac has changed, how can I
> catch this and put the new MAC into mac_change?
>
> Ultimately, I would also like to roll the values too. For example if
> the MAC changes again, put mac_change into mac_current...
>
>
> Thanks.
> --=20
>
> Paul Halliday
>
> "Diplomacy is the art of saying "Nice doggie!" till you can find a rock."
>
--
For technical support contracts, goto https://order.mysql.com/?ref=ensita
This email is sponsored by Ensita.NET http://www.ensita.net/
__ ___ ___ ____ __
/ |/ /_ __/ __/ __ \/ / Gleb Paharenko
/ /|_/ / // /\ \/ /_/ / /__ Gleb.Paharenko@(protected)
/_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET
<___/ www.mysql.com
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql?unsub=mysql@(protected)
Earn $52 per hosting referral at Lunarpages.
|
|
|