[ Sorry, forgot to cc list ]

>> It is said to be 10%. i would like to raise that, because we are getting bas
>> estimations for n_distinct.
>
> More to the point, the estimator we use is going to be biased for many
> ( probably most ) distributions no matter how large your sample size
> is.
>
> If you need to fix ndistinct, a better approach may be to do it manually.
>
> Best,
> Nathan
>

-- 
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance

Reply via email to