Re: SELECT's take a long time compared to other DBMS

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: Relaxin <noname(at)spam(dot)com>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: SELECT's take a long time compared to other DBMS
Date: 2003-09-04 22:58:19
Message-ID: Pine.LNX.4.33.0309041657240.28912-100000@css120.ihs.com
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You would "get" all rows, but they'd be stored server side until your
client asked for them.

I.e. a cursor would level the field here, since you say that the other
test cases stored the entire result set on the server. Or did I
misunderstand what you meant there?

On Thu, 4 Sep 2003, Relaxin wrote:

> All rows are required.
>
> ""Shridhar Daithankar"" <shridhar_daithankar(at)persistent(dot)co(dot)in> wrote in
> message news:3F573E8B(dot)31916(dot)A1063F8(at)localhost(dot)(dot)(dot)
> > On 4 Sep 2003 at 0:48, Relaxin wrote:
> > > All of the databases that I tested the query against gave me immediate
> > > access to ANY row of the resultset once the data had been returned.
> > > Ex. If I'm currently at the first row and then wanted to goto the
> 100,000
> > > row, I would be there immediately, and if I wanted to then goto the 5
> > > row...same thing, I have the record immediately!
> > >
> > > The other databases I tested against stored the entire resultset on the
> > > Server, I'm not sure what PG does...It seems that brings the entire
> > > resultset client side.
> > > If that is the case, how can I have PG store the resultset on the Server
> AND
> > > still allow me immediate access to ANY row in the resultset?
> >
> > You can use a cursor and get only required rows.
> >
> >
> > Bye
> > Shridhar
> >
> > --
> > Nick the Greek's Law of Life: All things considered, life is 9 to 5
> against.
> >
> >
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