Re: [GENERAL] [JDBC] org.postgresql.util.PSQLException: An I/O error occured

2006-08-22 Thread Oliver Jowett
surabhi.ahuja wrote: org.postgresql.util.PSQLException: An I/O error occured while sending to the backend. Caused by: java.net.SocketException: Broken pipe This is a network error that the driver can't do anything about. If you have a stateful firewall between the client and the server, pe

Re: [GENERAL] table partitioning

2006-08-22 Thread Chris
Hi Gene, I'm using a cron job which creates a new partition table every night at midnight. After I create the table, I update the rule on the parent table so that new records go into the new partition table. Then I update the constraints on the tables so that constraint exclusion works. I'm d

Re: [GENERAL] unique constraint when updating tables

2006-08-22 Thread Martijn van Oosterhout
On Tue, Aug 22, 2006 at 08:39:00AM +0800, gao iqiang wrote: > Hello, >I met the following problem when i am using PostgreSQL as a backend > database: >I have a table "tabrel(a int primary key, b int)", and now there are for > example 100 records with column 'a' be from 1 to 100. When i'm go

[GENERAL] PSQLException: An I/O error occured while sending to the backend

2006-08-22 Thread surabhi.ahuja
hi all, I am using Postgres 8.0.0 I am getting the following exception in my code, please help as to what may be going wrong. thanks, regards Surabhi   org.postgresql.util.PSQLException: An I/O error occured while sending to the backend. at org.postgresql.core.v3.QueryExecutorImpl.execute(Que

Re: [GENERAL] table partitioning

2006-08-22 Thread Gene
Chris,I'm using a cron job which creates a new partition table every night at midnight. After I create the table, I update the rule on the parent table so that new records go into the new partition table. Then I update the constraints on the tables so that constraint exclusion works. I'm doing it t

[GENERAL] org.postgresql.util.PSQLException: An I/O error occured while sending to the backend

2006-08-22 Thread surabhi.ahuja
Title: Re: [JDBC] question regarding upgrade from pg74.215.jdbc3.jar to hi, I am using Postgres 8.0.0, i am getting the following exception in my code, can you please suggest at to what may be going wrong? The postgres logs do not tell anything.   thanks, regards Surabhi     org.postgres

[GENERAL] table partitioning

2006-08-22 Thread Chris
Hi all, I'm checking out table partitioning and wondering how to handle it dynamically. For example, if I want to partition by year & month, do I need to create all of the partitions (& rules) before hand or can I handle all of that another way (a pl/pgsql function? something else?) Any po

Re: [GENERAL] trigger help

2006-08-22 Thread Michael Fuhr
On Tue, Aug 22, 2006 at 02:37:19PM -0300, marcelo Cortez wrote: > > This isn't a trigger function. Are you sure "trigger" is the > > word you meant? > > yes i do I see: the function you originally posted is called by a trigger function. In any case the answer is the same: functions can't star

Re: [GENERAL] pl/R problem

2006-08-22 Thread Michael Fuhr
On Tue, Aug 22, 2006 at 04:24:46PM -0500, Don Isgitt wrote: > gds2=# create function sd(_float8) returns float as '' language 'plr'; > CREATE FUNCTION > > gds2=# select round(sd('{1.23,1.31,1.42,1.27}'::_float8)::numeric,8); > server closed the connection unexpectedly >This probably means

Re: [GENERAL] share library version problems

2006-08-22 Thread Tom Lane
Bryan White <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> One thing you should check is whether both libs were built with the same >> options (compare pg_config --configure output from the 8.0 and 8.1 >> installations). > I think that might be the problem. These are the differences in > pg_co

Re: [GENERAL] share library version problems

2006-08-22 Thread Bryan White
Martijn van Oosterhout wrote: Can you provide the output of ldd? The libraries are supposed to be reasonably compatable. web server: linux-gate.so.1 => (0x00ab) libexpat.so.0 => /usr/lib/libexpat.so.0 (0x00411000) libpq.so.4 => /usr/lib/libpq.so.4 (0x00324000)

Re: [GENERAL] share library version problems

2006-08-22 Thread Bryan White
Tom Lane wrote: Bryan White <[EMAIL PROTECTED]> writes: I am having problems with my libpq programs crashing. This seems to be a version incompatibility and I want to find out how to best proceed. My main database is running Fedora Core 5 with the supplied PostgreSQL 8.1.4. My web server

[GENERAL] pl/R problem

2006-08-22 Thread Don Isgitt
Hi list, Information first: gds2=# select version(); version ---

Re: [GENERAL] [8.1.4] Create index on timestamp fails

2006-08-22 Thread Tom Lane
"Arturo Perez" <[EMAIL PROTECTED]> writes: > I have a table with an column: > entry_date | timestamp with time zone| not null > And when I try to create an index on it like so: > create index entry_date_idx on = > user_tracking(date_part('year',entry_date)); > I get a > ERROR: f

Re: [GENERAL] varchar(n) vs. varchar

2006-08-22 Thread Tom Lane
"Daniel Serodio" <[EMAIL PROTECTED]> writes: > I've found a thread discussing the use of "text" vs. "varchar"; what > I'd like to know if there's any performance difference between using > "varchar(n)" vs. "varchar", ie, should I constrain a "name" column to > an arbitrary length to improve perform

Re: [GENERAL] error msg when pg_restore

2006-08-22 Thread Tom Lane
"nuno" <[EMAIL PROTECTED]> writes: > when i restore a database (using a backup file), it shows me some error > messages which do not seem to matter at all (there is no data lost in > the database, and maybe they're just warning messages...). > pg_restore: [archiver (db)] could not execute query: E

Re: [GENERAL] using deferred initially deferred to solve foreign key checking issues

2006-08-22 Thread Tom Lane
Philip de Nier <[EMAIL PROTECTED]> writes: > The solutions I could find in the mailing lists were either to upgrade to > version 8.1 which uses "SELECT ... FOR SHARE" (I'm currently using 8.0), > stop using foreign keys or add "DEFERRABLE INITIALLY DEFERRED" to the > constraints. For now I'd pre

Re: [GENERAL] share library version problems

2006-08-22 Thread Tom Lane
Bryan White <[EMAIL PROTECTED]> writes: > I am having problems with my libpq programs crashing. This seems to be > a version incompatibility and I want to find out how to best proceed. > My main database is running Fedora Core 5 with the supplied PostgreSQL > 8.1.4. > My web server is running

Re: [GENERAL] share library version problems

2006-08-22 Thread Martijn van Oosterhout
On Tue, Aug 22, 2006 at 12:26:53PM -0400, Bryan White wrote: > I am having problems with my libpq programs crashing. This seems to be > a version incompatibility and I want to find out how to best proceed. > My dev server was running the same setup as the web server. The > difference is that

Re: [GENERAL] Inserting Data

2006-08-22 Thread Michael Fuhr
On Tue, Aug 22, 2006 at 09:02:52AM -0700, Bob Pawley wrote: > I set aside the procedure you sent to me as it resulted in multiple rows of > the same information. (In fact one variation produced 100 rows for each of > the 9 "new" fields creating a 900 row table. If it was doing that then it would

Re: [HACKERS] [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alvaro Herrera <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> We might be able to do something about actually solving the statistical >> problem in 8.3, but I fear it's too late to think about it for 8.2. > I take it you mean you already have a very concrete idea on how to solve > it. Come on,

Re: [GENERAL] Passing arguments to a trigger function

2006-08-22 Thread Michael Fuhr
On Tue, Aug 22, 2006 at 01:18:44PM -0400, Harpreet Dhaliwal wrote: > Can anyone give me pointers for how to pass arguments to a trigger function. > I think it is done using tg_argv or something but not very sure how to do > it. Here's an example: CREATE TABLE foo (id integer PRIMARY KEY, t text,

Re: [HACKERS] [GENERAL] Queries joining views

2006-08-22 Thread Alvaro Herrera
Tom Lane wrote: > We might be able to do something about actually solving the statistical > problem in 8.3, but I fear it's too late to think about it for 8.2. I take it you mean you already have a very concrete idea on how to solve it. Come on, illuminate us poor dumb souls. -- Alvaro Herrera

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
I wrote: > Thanks. After digging through it a bit, I understand what's happening, > but I'm not seeing any simple fix. I forgot to mention that although I could reproduce your bad plan in 8.1, CVS HEAD doesn't fall into the trap. I don't believe we've done anything to fix the fundamental problem

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alban Hertroys <[EMAIL PROTECTED]> writes: >> I'm confused too. Would it be possible for you to send me a dump of >> your database? > Attached is a cleaned out database, the full schema is included, but > only the relevant tables contain any data. Thanks. After digging through it a bit, I unde

Re: [GENERAL] [8.1.4] Create index on timestamp fails

2006-08-22 Thread Chris Hoover
It appears that 8.1 is stricter on checking the type of function.  Look at your user_tracking function.  It is probably set as volatile.  You need to change it to be immutable.This should fix the issue.Chris On 8/21/06, Arturo Perez <[EMAIL PROTECTED]> wrote: Hi all, Using postgresql 8.

Re: [GENERAL] unique constraint when updating tables

2006-08-22 Thread A. Kretschmer
am Tue, dem 22.08.2006, um 8:39:00 +0800 mailte gao iqiang folgendes: > Hello, > I met the following problem when i am using PostgreSQL as a backend > database: > I have a table "tabrel(a int primary key, b int)", and now there are for > example 100 records with column 'a' be from 1 to 10

[GENERAL] [8.1.4] Create index on timestamp fails

2006-08-22 Thread Arturo Perez
Title: [8.1.4] Create index on timestamp fails Hi all, Using postgresql 8.1.4 I have a table with an column:     entry_date | timestamp with time zone| not null And when I try to create an index on it like so:     create index entry_date_idx on user_tracking(date_part('yea

[GENERAL] varchar(n) vs. varchar

2006-08-22 Thread Daniel Serodio
I've found a thread discussing the use of "text" vs. "varchar"; what I'd like to know if there's any performance difference between using "varchar(n)" vs. "varchar", ie, should I constrain a "name" column to an arbitrary length to improve performance, or will it actually degrade performance because

[GENERAL] unique constraint when updating tables

2006-08-22 Thread gao iqiang
Hello,    I met the following problem when i am using PostgreSQL as a backend database:    I have a table "tabrel(a int primary key, b int)", and now there are for example 100 records with column 'a' be from 1 to 100. When i'm going to add one to each 'a' and intended to get 'a' varing from 2 to 10

[GENERAL] error msg when pg_restore

2006-08-22 Thread nuno
good'ay everyone. i have this problem which may not be a big deal, however, it'd be great if you could help me if possible. when i restore a database (using a backup file), it shows me some error messages which do not seem to matter at all (there is no data lost in the database, and maybe they're

[GENERAL] External variable

2006-08-22 Thread macieh
Hi, I cannon find in online doc from postgresql.org either using google so... I need to pass variable into postgresql database from external system. I have no idea if in postgresql exist sth like session variables or sth like that. In details I would like to pass login field from external client

Re: [GENERAL] Massive slowdown when LIMIT applied

2006-08-22 Thread macgillivary
Purely out of curiosity, what sort of execution time do you get if you use: SELECT * FROM (SELECT username,acctstarttime FROM radacct WHERE username='user' ORDER BY acctstarttime ) allstarttimes LIMIT 50; Graeme Hinchliffe wrote: > > Now, if I do the following: > > SELECT username,acctstarttime

[GENERAL] using deferred initially deferred to solve foreign key checking issues

2006-08-22 Thread Philip de Nier
Hi I'm having problems with concurrent transactions that involve foreign key constraints that use "SELECT ... FOR UPDATE". These constraints result in one transaction waiting for another (failing to get a ShareLock on a transaction which already has an ExclusiveLock). The solutions I could f

Re: [GENERAL] trigger help

2006-08-22 Thread marcelo Cortez
Micheal > This isn't a trigger function. Are you sure > "trigger" is the > word you meant? yes i do CREATE TABLE actlocat ( id_actlocal numeric(2) NOT NULL, d_actlocal char(8) NOT NULL, f_novedad float8 NOT NULL, ordenado_por char(18) NOT NULL, CONSTRAINT pk_actlocat PRIMARY KEY

[GENERAL] Passing arguments to a trigger function

2006-08-22 Thread Harpreet Dhaliwal
Hi,Can anyone give me pointers for how to pass arguments to a trigger function.I think it is done using tg_argv or something but not very sure how to do it.Regards,Harpreet

Re: [GENERAL] UUID as primary key

2006-08-22 Thread Vance Maverick
Thanks, I've gotten this working nicely now (after some offline exchanges with Harald). In JDBC, inet values can be read a couple of ways -- the easiest is to call ResultSet.getString(). And to write them, the easiest is to use prepared statements of the form INSERT INTO xxx VALUES (?::inet, .

[GENERAL] share library version problems

2006-08-22 Thread Bryan White
I am having problems with my libpq programs crashing. This seems to be a version incompatibility and I want to find out how to best proceed. My main database is running Fedora Core 5 with the supplied PostgreSQL 8.1.4. My web server is running Fedora Core 4 with the supplied PostgreSQL 8.0.8

Re: [GENERAL] Inserting Data

2006-08-22 Thread Bob Pawley
Hi Michael I set aside the procedure you sent to me as it resulted in multiple rows of the same information. (In fact one variation produced 100 rows for each of the 9 "new" fields creating a 900 row table. I went back to an earlier procedure which has been performing successfully. -- c

Re: [GENERAL] UUID as primary key

2006-08-22 Thread Harald Armin Massa
Vance,nice that it was of help.(When going from Java to the database, for example, it's easiest to compose the value directly into the SQL query rather thanusing a parameter.)  This seems quite viable.Please allow me to recommend to you to NOT go this seemingly easy way. I went there myself (but di

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alban Hertroys <[EMAIL PROTECTED]> writes: > I sure hope we get this mystery unveiled... I'm confused too. Would it be possible for you to send me a dump of your database? I need the full schema definitions of these tables, indexes, and views, but you could null out all but the various "number"

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: Alban Hertroys <[EMAIL PROTECTED]> writes: tablename | mm_product_table attname | number histogram_bounds | {2930,3244,3558,3872,4186,4500,4814,5128,5442,5756,6070} tablename | mm_insrel_table attname | snumber histogram_bounds | {135,376

Re: [GENERAL] UUID as primary key

2006-08-22 Thread Vance Maverick
Thanks for the good suggestion. I spent some time last night verifying that it works, and that I can get the values in and out correctly through JDBC. (When going from Java to the database, for example, it's easiest to compose the value directly into the SQL query rather than using a parameter.)

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alban Hertroys <[EMAIL PROTECTED]> writes: > tablename | mm_product_table > attname | number > histogram_bounds | {2930,3244,3558,3872,4186,4500,4814,5128,5442,5756,6070} > tablename | mm_insrel_table > attname | snumber > histogram_bounds | > {135,3768,4780,

Re: [GENERAL] trigger help

2006-08-22 Thread Michael Fuhr
On Tue, Aug 22, 2006 at 10:38:31AM -0300, marcelo Cortez wrote: > I think my trigger need transaction ,but the pgsql > compiler refuse to compile 'begin .. commit ' sequence > I use the perform , to do the works Functions can't start or end transactions because they're already being executed in t

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: Alban Hertroys <[EMAIL PROTECTED]> writes: However, mm_product.number always matches either mm_insrel.snumber or mm_insrel.dnumber (source and destination respectively). The other way around this isn't the case; then snumber and dnumber match number-fields in other tables (they

Re: [GENERAL] trigger help

2006-08-22 Thread Christopher Browne
On 8/22/06, marcelo Cortez <[EMAIL PROTECTED]> wrote: I think my trigger need transaction ,but the pgsql compiler refuse to compile 'begin .. commit ' sequence I use the perform , to do the works Stored functions already execute inside the context of some already-running transaction. You don'

[GENERAL] trigger help

2006-08-22 Thread marcelo Cortez
folks I think my trigger need transaction ,but the pgsql compiler refuse to compile 'begin .. commit ' sequence I use the perform , to do the works i'm wrong? tia. any help be appreciated. MDC code below ( note (*) for perform instruction) CREATE OR REPLACE FUNCTION _create_ca

Re: [GENERAL] could not open relation - why?

2006-08-22 Thread Silvela, Jaime \(Exchange\)
I had the same problem reported by VACUUM, and I traced it down to an individual table, for which SELECT * would return the exact same message. As far as I know, no process or person has tried to drop the table at any point. Luckily it's a table populated by an importer every day, and I have a cop

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alban Hertroys <[EMAIL PROTECTED]> writes: > However, mm_product.number always matches either mm_insrel.snumber or > mm_insrel.dnumber (source and destination respectively). The other way > around this isn't the case; then snumber and dnumber match number-fields > in other tables (they always do

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: Alban Hertroys <[EMAIL PROTECTED]> writes: zorgweb_solaris=> select * from pg_stats where attname = 'number' and tablename IN ('mm_insrel_table', 'mm_product_table', 'mm_object'); tablename | mm_product_table histogram_bounds | {2930,3244,3558,3872,4186,4500,4814,5128

Re: [GENERAL] Queries joining views

2006-08-22 Thread Tom Lane
Alban Hertroys <[EMAIL PROTECTED]> writes: > zorgweb_solaris=> select * from pg_stats where attname = 'number' and > tablename IN ('mm_insrel_table', 'mm_product_table', 'mm_object'); > tablename | mm_product_table > histogram_bounds | {2930,3244,3558,3872,4186,4500,4814,5128,5442,5756,6

[GENERAL] GNUmed release (uses PostgreSQL)

2006-08-22 Thread Karsten Hilbert
Dear fellow PostgreSQL users, we are happy to announce the release of GNUmed 0.2 "Librarian". GNUmed is an electronic medical record which uses PostgreSQL for its backend. Some of the new features since the last release: - server can be installed on MS/Windows, too Courtesy of PostgreSQL now r

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Alban Hertroys wrote: Tom Lane wrote: I'm thinking that removing the indexes it's erroneously using now could help performance, as it can no longer use that index. It may however pick the primary key index (likely), or - if we remove even that one - a sequential scan... Experimenting will answ

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: Looking back at Alban's original post, I finally see what the planner is up to: -> Merge Join (cost=0.00..165.07 rows=1 width=28) (actual time=53.890..129.310 rows=1 loops=1) Merge Cond: ("outer".number = "inner".number) -> Nested Loo

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: DelGurth <[EMAIL PROTECTED]> writes: On 8/21/06, Tom Lane <[EMAIL PROTECTED]> wrote: It might be interesting also to examine the output of just explain select * from mm_insrel_table where dnumber=558332 and dir<>1 with different subsets of these indexes in place. Ok. Did that

Re: [GENERAL] Queries joining views

2006-08-22 Thread Alban Hertroys
Tom Lane wrote: DelGurth <[EMAIL PROTECTED]> writes: As you can see we tried some indexes, to see if we could get the queries on the views to become faster. Indexes: "mm_insrel_table_pkey" PRIMARY KEY, btree (number) "mm_insrel_dir_not_one_idx" btree (dnumber, snumber) WHERE dir <> 1