Re: Optimisation deficiency: currval('seq')-->seq scan, constant-->index scan
От | Bruce Momjian |
---|---|
Тема | Re: Optimisation deficiency: currval('seq')-->seq scan, constant-->index scan |
Дата | |
Msg-id | 200010140420.AAA22768@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Optimisation deficiency: currval('seq')-->seq scan, constant-->index scan (Tiago Antão <tra@fct.unl.pt>) |
Ответы |
Re: Optimisation deficiency: currval('seq')-->seq scan,
constant-->index scan
|
Список | pgsql-hackers |
> On Mon, 21 Aug 2000, Tom Lane wrote: > > > > One thing it might be interesting (please tell me if you think > > > otherwise) would be to improve pg with better statistical information, by > > > using, for example, histograms. > > > > Yes, that's been on the todo list for a while. > > If it's ok and nobody is working on that, I'll look on that subject. > I'll start by looking at the analize portion of vacuum. I'm thinking in > using arrays for the histogram (I've never used the array data type of > postgres). > Should I use 7.0.2 or the cvs version? If you don't like the analyze part, you can blame me. It is non-optimal, but lean. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
В списке pgsql-hackers по дате отправления: