Re: Second attempt, roll your own autovacuum

Alvaro Herrera wrote:
> Glen Parker wrote:
>
>> The trouble now is, I don't see how to reset the statistics.  My
>> assumption was that vacuum did it, but that appears to be false.  How
>> does autovacuum do it?  Can I do it with SQL?
>
> Huh, reset what statistics?  Autovacuum does not reset anything.  What
> statistics are you using?  The number of dead tuples _should_ show as
> zero on the stat system after a vacuum, certainly.

pg_stat_user_tables.[n_tup_ins|n_tup_upd|n_tup_del].  Hmm maybe I'm
doing this all wrong then.  Is there a way to find the estimated dead
tuples from SQL, the same number autovacuum looks at?

-Glen