Re: Query puts 7.3.4 on endless loop but 7.4beta5 is fine. [ with better indenting ]

From: <mallah(at)trade-india(dot)com>
To: <cbbrowne(at)acm(dot)org>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Query puts 7.3.4 on endless loop but 7.4beta5 is fine. [ with better indenting ]
Date: 2003-10-30 14:12:00
Message-ID: 13042.61.16.154.82.1067523120.squirrel@mail.trade-india.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

> mallah(at)trade-india(dot)com (Rajesh Kumar Mallah) wrote:
>> Can you please have a Look at the below and suggest why it
>> apparently puts 7.3.4 on an infinite loop . the CPU utilisation of the backend running it
>> approches 99%.
>
> What would be useful, for this case, would be to provide the query plan, perhaps via
>
> EXPLAIN [Big Long Query].
>
> The difference between that EXPLAIN and what you get on 7.4 might be quite interesting.
>
> I would think it quite unlikely that it is truly an "infinite" loop; it is rather more likely
> that the plan winds up being pretty bad and doing something [a bunch of nested loops, maybe?]
> that run longer than your patience will permit.

:-) ok i will leave it running and try to get it.

Regds
Mallah.

> --
> wm(X,Y):-write(X),write('@'),write(Y). wm('cbbrowne','acm.org').
> http://www3.sympatico.ca/cbbrowne/lsf.html
> Rules of the Evil Overlord #81. "If I am fighting with the hero atop a moving platform, have
> disarmed him, and am about to finish him off and he glances behind me and drops flat, I too
> will drop flat instead of quizzically turning around to find out what he saw."
> <http://www.eviloverlord.com/>
>
> ---------------------------(end of broadcast)--------------------------- TIP 6: Have you
> searched our list archives?
>
> http://archives.postgresql.org

-----------------------------------------
Over 1,00,000 exporters are waiting for your order! Click below to get
in touch with leading Indian exporters listed in the premier
trade directory Exporters Yellow Pages.
http://www.trade-india.com/dyn/gdh/eyp/

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message scott.marlowe 2003-10-30 14:29:32 Re: vacuum locking
Previous Message Bruno Wolff III 2003-10-30 14:04:06 Re: Ignoring index on (A is null), (A is not null) conditions