I believe by now you would have found it out by going through the
PostgreSQL documentation. If not you can use PQgetisnull (result,
row_no, col_no)
Regards,
Siva Kumar.K
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Pit M.
Sent: Monday, August 15,
Hi,
How can I limit the maximum space uses by Posgres database ??. So that
it should not use total disk space available on system.
Thanks in advance,
Vishnu
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Someone questioned a while back about hosting providers for PostgreSQL
-- a recent post led to finding http://www.planetargon.com/hosting/
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TIP 5: don't forget to increase your free space map settings
am 23.08.2005, um 15:12:54 +0530 mailte Vishnu folgendes:
Hi,
How can I limit the maximum space uses by Posgres database ??. So that it
should not use total disk space available on system.
You can use the tools from the os, under Linux for instance quotas.
You can also put the data dir on
Macario Mares wrote:
He tratado de importar datos con la instrucción COPY pero no he
podido. Les agradeceria me dieran un ejemplo de cómo importar datos ya
sea de Windows o linux
si das mas info de porque no puedes seria mejor con lo que comentas lo
unico que te puedo comentar es que
Hello!
Could anybody help me with this [artificial] query
select ctid from aaa where ctid in (select ctid from aaa limit 10);
here is explained plan
Nested Loop IN Join (cost=3.47..300325932.99 rows=10 width=6)
Join Filter: (outer.ctid = inner.ctid)
- Seq Scan on aaa
On Tuesday 23 August 2005 08:39, Ilja Golshtein wrote:
Hello!
Could anybody help me with this [artificial] query
select ctid from aaa where ctid in (select ctid from aaa limit 10);
here is explained plan
Nested Loop IN Join (cost=3.47..300325932.99 rows=10 width=6)
Join
On Tue, Aug 23, 2005 at 09:15:42AM -0400, Robert Treat wrote:
On Tuesday 23 August 2005 08:39, Ilja Golshtein wrote:
select ctid from aaa where ctid in (select ctid from aaa limit 10);
Nested Loop IN Join (cost=3.47..300325932.99 rows=10 width=6)
Join Filter: (outer.ctid =
He tratado de importar datos con la instrucción COPY
pero no he podido. Les agradeceria me dieran un ejemplo de cómo importar datos
ya sea de Windows o linux
Hello!
On Tue, Aug 23, 2005 at 09:15:42AM -0400, Robert Treat wrote:
On Tuesday 23 August 2005 08:39, Ilja Golshtein wrote:
select ctid from aaa where ctid in (select ctid from aaa limit 10);
Aside from that, ctid is of type tid, and its equality operator
isn't hashable.
It is the piece
You're also free to set sort_mem (7.4.x) or work_mem (8.0.x) on a per
session basis, so you could try experimenting with raising the value
of those settings during sessions in which your query is running.
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open
Greetings,
I have a question about foreign key cost. I have two tables A and B.
A has 300,000 records, B has 3 records.
A (col1, col2, col3... ... colN)
B (colB1 primary key, colB2)
I'd like to setup foreign key constraint for A.col3, as the following:
CONSTRAINT Aclo3_fk FOREIGN KEY (col3)
Michael Fuhr [EMAIL PROTECTED] writes:
On Tuesday 23 August 2005 08:39, Ilja Golshtein wrote:
select ctid from aaa where ctid in (select ctid from aaa limit 10);
Aside from that, ctid is of type tid, and its equality operator
isn't hashable.
Nor mergejoinable, so there's not much scope for a
On Tue, Aug 23, 2005 at 01:19:11PM +0200, A. Kretschmer wrote:
am 23.08.2005, um 15:12:54 +0530 mailte Vishnu folgendes:
How can I limit the maximum space uses by Posgres database ??. So that it
should not use total disk space available on system.
You can use the tools from the os, under
Hi,
I'm trying to import a sequence txt
file.
The file has fix columns ...i.ethe
first 10 positions is the primary key ...
Thecomand copy need a delimitier but the file
is seq without a delimitier.
I look in the manual but i don't won't if it is
possible.
My problem is the file is very
Emi Lu [EMAIL PROTECTED] writes:
But I got a warning msg from postgresql as:
foreign key constraint Aclo3_fk will require costly sequential scans
Try to make the referencing and referenced columns the same datatype.
regards, tom lane
---(end
On Tue, 2005-08-23 at 10:30 -0400, Emi Lu wrote:
I'd like to setup foreign key constraint for A.col3, as the following:
CONSTRAINT Aclo3_fk FOREIGN KEY (col3) REFERENCES B(colB1)
But I got a warning msg from postgresql as:
foreign key constraint Aclo3_fk will require costly sequential
On Tue, Aug 23, 2005 at 10:30:14AM -0400, Emi Lu wrote:
I'd like to setup foreign key constraint for A.col3, as the following:
CONSTRAINT Aclo3_fk FOREIGN KEY (col3) REFERENCES B(colB1)
But I got a warning msg from postgresql as:
foreign key constraint Aclo3_fk will require costly
On Tue, Aug 23, 2005 at 11:47:57AM -0300, Rodrigo Africani wrote:
I'm trying to import a sequence txt file.
The file has fix columns ... i.e the first 10 positions is the primary key ...
The comand copy need a delimitier but the file is seq without a delimitier.
I look in the manual but i
We want to test the 8.1 beta test version of PostgreSQL on a SUSE Linux box.
What would be the best download for this?
TIA,
-Kevin
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TIP 1: if posting/reading through Usenet, please send an appropriate
Thanks a lot for all helps. I do not have warnings anymore :-)
I'd like to setup foreign key constraint for A.col3, as the following:
CONSTRAINT Aclo3_fk FOREIGN KEY (col3) REFERENCES B(colB1)
But I got a warning msg from postgresql as:
foreign key constraint Aclo3_fk will require costly
My mistake.
- Any idea when it will get to beta test status?
- Is it currently stable enough to make a real-world test worthwhile?
- Would this be the snapshot you mentioned?:
http://wwwmaster.postgresql.org/download/mirrors-ftp?file=dev%2Fpostgresql-snapshot.tar.gz
Thanks,
Kevin Grittner wrote:
We want to test the 8.1 beta test version of PostgreSQL on a SUSE Linux box.
What would be the best download for this?
We are not in beta yet, but you can grab the nightly snapshot from the
ftp server.
--
Bruce Momjian|
Kevin Grittner wrote:
My mistake.
- Any idea when it will get to beta test status?
- Is it currently stable enough to make a real-world test worthwhile?
- Would this be the snapshot you mentioned?:
On Tue, Aug 23, 2005 at 02:53:33PM +, Matt Miller wrote:
On Tue, 2005-08-23 at 10:30 -0400, Emi Lu wrote:
I'd like to setup foreign key constraint for A.col3, as the following:
CONSTRAINT Aclo3_fk FOREIGN KEY (col3) REFERENCES B(colB1)
But I got a warning msg from postgresql as:
am 23.08.2005, um 11:47:57 -0300 mailte Rodrigo Africani folgendes:
Hi,
I'm trying to import a sequence txt file.
The file has fix columns ... i.e the first 10 positions is the primary key ...
The comand copy need a delimitier but the file is seq without a delimitier.
I look in the manual
Hi!
Could anybody help me with this [artificial] query
select ctid from aaa where ctid in (select ctid from aaa limit 10);
[skipped]
I think using an indexed field would probably be faster for you, especially
if you have a PK on the table.
I used to think ctid is the same as rowid in
On Tue, Aug 23, 2005 at 10:36:34 -0500,
Kevin Grittner [EMAIL PROTECTED] wrote:
- Any idea when it will get to beta test status?
Based on the discussions I have seen, the first beta will probably be released
within a week.
- Is it currently stable enough to make a real-world test
On Tue, Aug 23, 2005 at 05:30:31PM +0400, Ilja Golshtein wrote:
Hi!
Could anybody help me with this [artificial] query
select ctid from aaa where ctid in (select ctid from aaa limit 10);
[skipped]
I think using an indexed field would probably be faster for you,
especially if you
On Mon, Aug 22, 2005 at 08:55:00AM -0300, Bruno Almeida do Lago wrote:
I haven't found any message on archives talking about this, so I'm posting
it.
The OCFS (Oracle Cluster File System) is now GPL - see more on
http://oss.oracle.com/projects/ocfs/
What do you think?
The file system is
Alvaro Herrera [EMAIL PROTECTED] writes:
If you are too worried about it, you could look at what is needed to
implement hashjoin and mergejoin for ctids. I take it it isn't trivial,
or it would be done already, but I don't think it's too hard (unless
there is an implementation detail that
Hi guys,
First time (I think, certainly recently) posting to this mailing list.
I've been casually using Postgres for a couple of years, but recently am
going to be using it in a professional settings, so I figure it's time
to get serious about learning the right way to write functions/stored
CREATE PROCEDURE test(
@lookup char(50))
WITH ENCRYPTION AS BEGIN
-- ... a bunch of code to do some lookup, and then ...
SELECT
@Result1 AS Result1,
@Result2 AS Result2,
@Result3 AS Result3,
@Result4 AS Result4
END
GO
and then when I call this procedure, I get a result row (like it
Joshua D. Drake wrote:
perhaps even any existing column in a table.
I think what you are looking for is SetOF functions.
http://www.postgresql.org/docs/8.0/interactive/functions-srf.html
Thanks for the response.
The reference you indicated is talking about Set Returning Functions.
I'm
On Tue, Aug 23, 2005 at 06:02:05PM +0400, Ilja Golshtein wrote:
The only thing I am curios is ctid good for anything from user point
of view?
No -- it changes far too frequently for that.
--
Alvaro Herrera (alvherre[a]alvh.no-ip.org)
Un poeta es un mundo encerrado en un hombre (Victor Hugo)
you can do this with a function that returns a refcursor.
(lookup refcursor in the docs)
you would call it something like this
select mycursorfunct();
fetch all from return_cursor;
In this example I hardcode the name return cursor and then call both
lines from a transaction.
you could also
John Lawler wrote:
In MSSQL, I can write a stored procedure that
does something like this:
CREATE PROCEDURE test(
@lookup char(50))
WITH ENCRYPTION AS BEGIN
-- ... a bunch of code to do some lookup, and then ...
SELECT
@Result1 AS Result1,
@Result2 AS Result2,
@Result3
Hi ..
I have not been able to work out how to do this is Postgres 8
(pseudo-code)
if exists table foo
drop table foo;
end
create table foo;
If I go with
drop table foo;
create table foo;
then it barfs on an empty db. I can find the table name in pg_class but
I am not sure of where
Tom Lane wrote:
It wouldn't be hard that I can see (just build hash and btree opclasses
for tid), but I'm pretty unclear on why bother. There's no use-case for
cross-table joins involving ctid, since you couldn't usefully store a
ctid referencing another table. The example Ilja showed was
I'm just starting out using VIEWs -- and mostly new to postgresql and
I'm trying to learn a little about reading the EXPLAIN ANALYZE output.
I have the following view setup and I'm wonder where to create
indexes, and mostly if I'm doing anything the incorrect or a very
expensive way.
CREATE
Hi ..
I am just playing with PostgreSQL 8.0.1 The server is running on a
Solaris 8 platform with the kernel parameters tweaked as suggested.
When I start the server, the logfile reports:
$ pg_ctl start -l logfile
postmaster starting
$ cat logfile
LOG: could not bind
On Tuesday 23 August 2005 15:55, Alvaro Herrera wrote:
On Tue, Aug 23, 2005 at 06:02:05PM +0400, Ilja Golshtein wrote:
The only thing I am curios is ctid good for anything from user point
of view?
No -- it changes far too frequently for that.
Oh I dunno... In general I'd agree with you,
Hi ..
On Tue, 2005-08-23 at 14:45 -0700, Mark Probert wrote:
SO, the db is up and running locally but I can't get to it from the
network.
With a friend's help, I worked out that I need to edit two files:
postgresql.conf (listen_address = '*')
pg_hba.conf (add host all all
Ilja Golshtein [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hello!
On Tue, Aug 23, 2005 at 09:15:42AM -0400, Robert Treat wrote:
On Tuesday 23 August 2005 08:39, Ilja Golshtein wrote:
select ctid from aaa where ctid in (select ctid from aaa limit 10);
Aside from that, ctid is
On Wed, Aug 24, 2005 at 09:26:10AM +0930, Jeff Eckermann wrote:
The ctid value can be useful in a multi user application, to check whether a
record has been changed by another user, before committing changes.
Whenever a record is updated the ctid value will be changed, so by storing
the
--- Jim C. Nasby [EMAIL PROTECTED] wrote:
On Wed, Aug 24, 2005 at 09:26:10AM +0930, Jeff
Eckermann wrote:
The ctid value can be useful in a multi user
application, to check whether a
record has been changed by another user, before
committing changes.
Whenever a record is updated the
Hi!
I got the following psql's error when executing a script,
ERROR: database test is being accessed by other users
To solve this, I have to disconnect the database connection from the
pgAdmin III.
May I know how can I configure the database to allow multiple user access?
On Wed, Aug 24, 2005 at 10:10:55AM +0800, wolverine my wrote:
I got the following psql's error when executing a script,
ERROR: database test is being accessed by other users
What does the script do? Based on the error message I'd guess that
you're trying to drop or rename the database.
To
Jim C. Nasby [EMAIL PROTECTED] writes:
I believe that's not necessarily true. If you select a tuple and it's
ctid and it's updated more than once with a vacuum in-between I believe
it could end up back in the same position, which would mean the same
ctid.
This is the reason for the
--- Tom Lane [EMAIL PROTECTED] wrote:
Jim C. Nasby [EMAIL PROTECTED] writes:
I believe that's not necessarily true. If you
select a tuple and it's
ctid and it's updated more than once with a vacuum
in-between I believe
it could end up back in the same position, which
would mean the same
John Lawler [EMAIL PROTECTED] writes:
Plus, the main part was to be able to have the columns (arbitrarily)
named as if they'd been selected from a table. I hope that there's
something about as easy as the example I cited from MS SQL.
In existing releases you need to create a named composite
On Tue, Aug 23, 2005 at 06:42:33PM -0700, Jeff Eckermann wrote:
I believe that's not necessarily true. If you select
a tuple and it's
ctid and it's updated more than once with a vacuum
in-between I believe
it could end up back in the same position, which
would mean the same
ctid.
Hi, Michael
You are right, the script was trying to drop the database and the
error makes sense to me now.
Thank you!
On 8/24/05, Michael Fuhr [EMAIL PROTECTED] wrote:
On Wed, Aug 24, 2005 at 10:10:55AM +0800, wolverine my wrote:
I got the following psql's error when executing a script,
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