[GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread bwhite
Hello, I'm rather confused about the logic of something in the rtree code, perhaps someone can provide some insight here. Without loss of generality I'll use intervals on R (real number line) below, but this would apply to boxes as well. Note that sup(S) and inf(S) are the upper and lower bound

Re: [GENERAL] Large DB

2004-03-31 Thread Manfred Koizar
On Tue, 30 Mar 2004 17:48:14 -0800, "Mooney, Ryan" <[EMAIL PROTECTED]> wrote: >I have a single table that just went over 234GB in size with about 290M+ >rows. That would mean ~ 800 bytes/row which, given your schema, is hard to believe unless there are lots of dead tuples lying around. >queries u

[GENERAL] Slow IN query

2004-03-31 Thread Eric Jain
Using an OR or IN query seems to be orders of magnitudes slower than running a query twice. There is an unique index on 'id' and an index on 'model_ns, model'. The number of row returned is less than 800. Everything is vacuumed and analyzed. Running on 7.4.1. Perhaps this situation is something the

[GENERAL] Warings in Log: could not resolve "localhost": host nor service provided, or not known

2004-03-31 Thread Durai
Hello All, I built PostgreSQL 7.4.2 on HPUX IPF platform. It works fine. But when I start the postmaster, I got the following LOG message: LOG: could not resolve "localhost": host nor service provided, or not known $ postmaster -D /var/opt/iexpress/postgresql & [1] 8995

[GENERAL] row-level security model

2004-03-31 Thread John DeSoi
I have a security model I have implemented in another (non-SQL) database environment that I would like to use in Postgresql. I have read the rules and set returning functions documentation but I still don't see how it would work in Postgresql. Any ideas or direction would be greatly appreciated

Re: [GENERAL] select distinct w/order by

2004-03-31 Thread Richard Huxton
On Wednesday 31 March 2004 18:50, John Liu wrote: > I know this is an old topic, but it's not easy to find a way around it, so > when we migrate SQL from other database to PostgreSQL, it causes a huge > headache. Here's an extremely simple example - > > The original simple SQL - > select distinct a

Re: [GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread William White
Tom Lane wrote: It'd need to be S &< T iff inf(S) <= sup(T) to satisfy the geometrical intuition. (You could quibble about the equality case, but box_overlap seems to consider touching boxes to overlap, so for consistency this should too.) However, if this is indeed wrong, why have we not hear

Re: [GENERAL] [pgsql-advocacy] Best open source db poll currently

2004-03-31 Thread Marc G. Fournier
Done :) Guys ... poll now shows 53% for MaxDB (ie. MySQL) and 15% for PostgreSQL ... think we can improve on that? :) http://www.casestudio.com On Wed, 31 Mar 2004, Martin Marques wrote: > El Mar 30 Mar 2004 11:13, Marc G. Fournier escribió: > > MaxDB - 62% > > PostgreSQL - 13% > > If you thr

Re: [GENERAL] select distinct w/order by

2004-03-31 Thread Tom Lane
"John Liu" <[EMAIL PROTECTED]> writes: > The original simple SQL - > select distinct atcode from TMP order by torder; This is not "simple", it is "broken SQL with an undefined result". If DISTINCT merges multiple rows with the same atcode, how are we supposed to know which row's value of torder t

Re: [GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread William White
Tom Lane wrote: Good point. You can force it by setting enable_seqscan to false, but otherwise it's unlikely to happen. Ah, didn't know about enable_seqscan, thanks. It seems to me that the operator rtree actually wants is best thought of as "is not to right of" (resp. "is not to left of"). The

Re: [GENERAL] Wich hardware suits best for large full-text indexed databases

2004-03-31 Thread Dann Corbit
> -Original Message- > From: Diogo Biazus [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 31, 2004 11:02 AM > To: Dann Corbit > Cc: [EMAIL PROTECTED] > Subject: Re: [GENERAL] Wich hardware suits best for large > full-text indexed databases > > > Dann Corbit wrote: > > >I see that on

Re: [GENERAL] Wich hardware suits best for large full-text indexed

2004-03-31 Thread Diogo Biazus
Dann Corbit wrote: I see that only table documentos has a unique index. Is it really so that none of the other tables has a key to uniquely identify a record? Perhaps the others have a unique attribute but it was never declared when forming the index? I thougth that a primary key would create

Re: [GENERAL] Wich hardware suits best for large full-text indexed databases

2004-03-31 Thread Dann Corbit
I see that only table documentos has a unique index. Is it really so that none of the other tables has a key to uniquely identify a record? Perhaps the others have a unique attribute but it was never declared when forming the index? I do not remember which version of PostgreSQL you are using, but

[GENERAL] Does an index get create for a Primary Key?

2004-03-31 Thread Thomas LeBlanc
Does an index get created for a Primary Key or is it just a constraint? Thanks, ThomasLL _ Free up your inbox with MSN Hotmail Extra Storage. Multiple plans available. http://join.msn.com/?pgmarket=en-us&page=hotmail/es2&ST=1/go/onm0

Re: [GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread Tom Lane
William White <[EMAIL PROTECTED]> writes: > Perhaps document as S &< T iff S "does not extend to the right > of/beyond" (the right boundary of) T? "Does not extend to the right of" works for me, unless someone on the list has got a better idea ... regards, tom lane -

Re: [GENERAL] select distinct w/order by

2004-03-31 Thread Stephan Szabo
On Wed, 31 Mar 2004, John Liu wrote: > I know this is an old topic, but it's not easy to find a way around it, so > when we migrate SQL from other database to PostgreSQL, it causes a huge > headache. Here's an extremely simple example - > > The original simple SQL - > select distinct atcode from T

Re: [GENERAL] Problem with foreign keys and locking

2004-03-31 Thread Stephan Szabo
On Wed, 31 Mar 2004, William Reese wrote: > As you can see, what is blocking, is the ShareLock on > the transaction. After reading through the code, I > realized that this is the intended behavior for > updates and deletes to the same row. In this case, > it's the "select for update" query that'

Re: [GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread William White
Tom Lane wrote: Right, but what about the existing operators --- what is a more correct way to document them? Ouch. Appealing to J.F. Allen's terminology ("An Interval-Based Representation of Temporal Knowledge", Comm ACM 26(11) 832-43), overleft could be called "left or finishes" (implying all

Re: [GENERAL] [pgsql-advocacy] Best open source db poll currently

2004-03-31 Thread Bernard Clement
Done too :) Hum! IMHO not so many people because when I click PG went from 16% to 17% immediately. Bernard On Wednesday 31 March 2004 14:09, Marc G. Fournier wrote: > Done :) > > Guys ... poll now shows 53% for MaxDB (ie. MySQL) and 15% for PostgreSQL > ... think we can improve on that? :) > >

Re: [GENERAL] Question about rtrees (overleft replacing left in nodes)

2004-03-31 Thread Tom Lane
William White <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> I can't think of an equally succinct definition of what the operators >> really do though. Comments? > I think "not to the left of" and "not to the right of" are sufficiently > succinct. That they may not see much user application m

Re: [GENERAL] row-level security model

2004-03-31 Thread Mike Mascari
John DeSoi wrote: I have a security model I have implemented in another (non-SQL) database environment that I would like to use in Postgresql. I have read the rules and set returning functions documentation but I still don't see how it would work in Postgresql. Any ideas or direction would be g

Re: [GENERAL] select distinct w/order by

2004-03-31 Thread Bob . Henkel
Not that this is the issue, but what kind of tool where you using to get your results back with this "other" database? Sometimes these fancy GUI tools like to be smart on you and order things based on something it feels is correct giving you the impression that the database choose the order when

Re: [GENERAL] Wich hardware suits best for large full-text indexed

2004-03-31 Thread Bill Moran
Diogo Biazus wrote: Bill Moran wrote: Diogo Biazus wrote: Hi folks, Does anyone has an idea of a more cost eficient solution? How to get a better performance without having to invest some astronomicaly high amount of money? This isn't hardware related, but FreeBSD 5 is not a particularly impr

Re: [GENERAL] select distinct w/order by

2004-03-31 Thread scott.marlowe
On Wed, 31 Mar 2004, Tom Lane wrote: > "John Liu" <[EMAIL PROTECTED]> writes: > > The original simple SQL - > > select distinct atcode from TMP order by torder; > > This is not "simple", it is "broken SQL with an undefined result". > > If DISTINCT merges multiple rows with the same atcode, how a

Re: [GENERAL] Does an index get create for a Primary Key?

2004-03-31 Thread Alvaro Herrera
On Wed, Mar 31, 2004 at 03:39:01PM -0600, Thomas LeBlanc wrote: > Does an index get created for a Primary Key or is it just a constraint? Yes, an unique btree index. -- Alvaro Herrera () "La Primavera ha venido. Nadie sabe como ha sido" (A. Machado) ---(end of broadcast)

[GENERAL] Sub-query too slow

2004-03-31 Thread Randall Skelton
Can someone please explain how I can make this sub-query faster? In the case below, 'test' is a temporary table but I have tried with test being a full, indexed, and 'vacuum analysed' table and it still takes more than 130 seconds. Note that 'test' has very few rows but 'cal_quat_1' has many