| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Devik <devik(at)server(dot)cdi(dot)cz> |
| Cc: | Hannu Krosing <hannu(at)tm(dot)ee>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: pgsql is 75 times faster with my new index scan |
| Date: | 2000-10-17 12:05:17 |
| Message-ID: | 200010171205.IAA15969@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> > > I doubt everyone would like trading query speed for insert/update
> > > speed plus index size
> >
> > If he is scanning through the entire index, he could do a sequential
> > scan of the table, grab all the tid transaction status values, and use
> > those when viewing the index. No need to store/update the transaction
> > status in the index that way.
>
> Huh ? How ? It is how you do it now. Do you expect
> load several milion transaction statuses into memory,
> then scan index and lookup these values ?
> Missed I something ?
> devik
>
>
Not sure. I figured they were pretty small values.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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