Re: Select max(foo) and select count(*) optimization

On Tuesday 06 January 2004 01:22, Rod Taylor wrote:
> Anyway, with Rules you can force this:
>
> ON INSERT UPDATE counter SET tablecount = tablecount + 1;
>
> ON DELETE UPDATE counter SET tablecount = tablecount - 1;

That would generate lot of dead tuples in counter table. How about

select relpages,reltuples from pg_class where relname=<tablename>;

Assuming the stats are recent enough, it would be much faster and accurate..

 Shridhar