On Wed, 16 Jul 2003, Kirill Ponazdyr wrote:
> Hello,
>
> We are currently working on a project where we need to limit number of
> records in a table to a certain number. As soon as the number has been
> reached, for each new row the oldest row should be deleted (Kinda FIFO),
> thus keeping a total number of rows at predefined number.
>
> The actual limits would be anywhere from 250k to 10mil rows per table.
>
> It would be great if this could be achieved by RDBMS engine itself, does
> Postgres supports this kind of tables ? And if not, what would be the most
> elegant soluion to achieve our goal in your oppinion ?
>
An after insert trigger springs to mind.
--
Nigel Andrews