Re: Strange select query

From: "Partyka Robert" <bobson(at)saturn(dot)alpha(dot)pl>
To: Einar Karttunen <ekarttun(at)cs(dot)Helsinki(dot)FI>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Strange select query
Date: 2001-09-12 09:16:05
Message-ID: 3B9F43F5.10584.92CC96@localhost
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

Hello

> The query is valid you should get more ram or rethink your query :-)
thx for explain how meny records it will return,
I know that was my mistake because the correct query I need was
something like:

select * from TA as a, TB as b, TC as c where
(position('some text' in a.textfield)>0 and a.index=b.referencefield
and b.other_referencefield=c.index) or
(position('some text' in b.textfield)>0 and a.index=b.referencefield
and b.other_referencefield=c.index)
or
(position('some text' in c.textfield)>0 and a.index=b.referencefield
and b.other_referencefield=c.index);

I was just wonder if that was bad query and take never ending loop
in backend or just return so many records.
In fact i should get this reflection self ... so maybe it was brain lock
that I dont saw this explanation (sig 'take some rest' from brain? ;-)
). I was suggested by result show by psql (I saw one the same
record showed about 100 times before I ^C the query so i think 'oh.
its probably never ending loop.').

regards
Robert Partyka

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Thurstan R. McDougle 2001-09-12 09:27:26 Re: USA Disaster
Previous Message Einar Karttunen 2001-09-12 08:49:52 Re: Strange select query