Enrico Pirozzi wrote:
> and i would like to retrieve the number of records without make
>
> select count(*) from table
>
> I could use directly the table instead of select, and in this this
> case I'm searching for
> something like the reltuples field in the pg_class table, but I need
> this value in real time.
If you want an accurate, up-to-date count then you'll need to use
count(*) or have a trigger keep a summary-count for you. A simple
implementation will reduce concurrency to writes on that table however.
Lots of discussion in the mailing-list archives on this.
--
Richard Huxton
Archonet Ltd
