Re: Bug? 8.0 does not use partial index

Поиск
Список
Период
Сортировка
От Palle Girgensohn
Тема Re: Bug? 8.0 does not use partial index
Дата
Msg-id 4790DAE91505459D0EC10580@palle.girgensohn.se
обсуждение исходный текст
Ответ на Re: Bug? 8.0 does not use partial index  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
--On torsdag, januari 13, 2005 17.03.41 -0500 Tom Lane <tgl@sss.pgh.pa.us> 
wrote:

> Palle Girgensohn <girgen@pingpong.net> writes:
>> How do you mean they look far off?
>
>>  Seq Scan on group_data  (cost=0.00..47544.43 rows=114164 width=43)
>>  (actual  time=114.015..1334.479 rows=4 loops=1)
>
> 114164 estimated vs 4 actual rows is pretty far off.  Perhaps something
> skewed about the data distribution?

Well, it might seem strange, but it is a quite normal data distribution for 
this application, believe me.


>> If you want, I can send you the data.
>
> If it's not too huge, sure, send it to me off-list.

I'm doing that now.

/Palle



В списке pgsql-hackers по дате отправления: