On Thursday 09 Sep 2004 6:26 pm, Vic Cekvenich wrote:
> What would be performance of pgSQL text search vs MySQL vs Lucene (flat
> file) for a 2 terabyte db?
Well, it depends upon lot of factors. There are few questions to be asked
here..
- What is your hardware and OS configuration?
- What type o
George,
Le Jeudi 26 Août 2004 19:58, George Essig a écrit :
> Bill Footcow wrote:
>
> ...
>
> > I have done a simple request, looking for title or description having
> > Postgres inside order by rank and date, like this :
> > SELECT a.title, a.id, a.url, to_char(a.r_date, 'DD/MM/ HH24:MI:SS')
On Sun, Sep 05, 2004 at 12:16:42AM -0500, Steve Bergman wrote:
> On Sat, 2004-09-04 at 23:47 -0400, Christopher Browne wrote:
> > The world rejoiced as [EMAIL PROTECTED] ("Merlin Moncure") wrote:
> > > Ok, you were right. I made some tests and NTFS is just not very
> > > good in the general case.
Hello,
I'm tuning my PostgreSQL DB (7.3.4) and have come across a query that
doesn't use an index I created specially for it, and consequently takes
circa 2 seconds to run. :(
The ugly query looks like this (the important part is really at the
very end - order by piece):
select userinfo1_.id as
Tom Lane wrote:
Markus Schaber <[EMAIL PROTECTED]> writes:
So, now my question is, why does the query optimizer not recognize that
it can throw away those "non-unique" Sort/Unique passes?
Because the issue doesn't come up often enough to justify expending
cycles to check for it.
How many cycles are
Neil Conway <[EMAIL PROTECTED]> writes:
> Tom Lane wrote:
>> Because the issue doesn't come up often enough to justify expending
>> cycles to check for it.
> How many cycles are we really talking about, though? I have a patch
> which I'll send along in a few days which implements a similar
> opt
<[EMAIL PROTECTED]> writes:
> I'm tuning my PostgreSQL DB (7.3.4) and have come across a query that
> doesn't use an index I created specially for it, and consequently takes
> circa 2 seconds to run. :(
> ...
> The output of EXPLAIN ANALYZE follows. Note how 99% of the total cost
> comes from "Sor
Tom Lane <[EMAIL PROTECTED]> writes:
> Neil Conway <[EMAIL PROTECTED]> writes:
>
> > How many cycles are we really talking about, though? I have a patch
> > which I'll send along in a few days which implements a similar
> > optimization: if a subselect is referenced by EXISTS or IN, we can
>
