2009/4/18 Tom Lane <tgl@sss.pgh.pa.us>:
> =?UTF-8?Q?Grzegorz_Ja=C5=9Bkiewicz?= <gryzman@gmail.com> writes:
>> That expected 1510 rows in 'assigments' seems to be pretty off,
>
> The planner does not trust an empty table to stay empty. Every
> Postgres version in living memory has acted like that; it's not
> new to 8.4.
ok, thanks
Quick question Tom. Can correlation be negative ?
--
GJ