Re: [GENERAL] dblink password required

2014-10-25 Thread Oliver Kohll - Mailing Lists
select * from dblink(‘dbname=database2 username=db_link password=mypassword','select username, email from appuser') as t1(username text, email text);: I think the problem is the above- ^^^ username=db_link should be user=db_link The accepted keywords are here:

[GENERAL] dblink password required

2014-10-24 Thread Oliver Kohll - Mailing Lists
Hi, I’m trying to use dblink to connect from database1 to database2 on the same machine. The Postgres version is 9.3.5. Firstly, I’ve created a user to use with the connection, while logged in as the postgres superuser to database2: create user db_link with password ‘mypassword’; grant

[GENERAL] Crash in 9.4 Beta when partially collapsing left outer joins

2014-09-08 Thread lists
I think this is the first time I've ever reported a PG crash, which is notable since I've been using PG for over 10 years. ;) Using the 9.4 Beta RPMs on CentOS 6.X/64, we're experiencing a reproducible crash when running a query with a left outer join, partially collapsed. TRAP:

[GENERAL] Detect streaming replication failure

2014-07-17 Thread Lists
For reference: https://wiki.postgresql.org/wiki/Streaming_Replication Assume a master - slave streaming replication configuration, Postgresql 9.2. Assume that the master has been chugging away, but the slave PG service has been offline for a while and the wal archive has updated enough that

[GENERAL] Natural key woe

2014-05-13 Thread Oliver Kohll - Mailing Lists
I'm sure no one else on this list has done anything like this, but here's a cautionary tale. I wanted to synchronise data in two tables (issue lists) - i.e. whenever a record is added into one, add a similar record into the other. The two tables are similar in format but not exactly the same

Re: [GENERAL] SSD Drives

2014-04-04 Thread Lists
On 04/02/2014 02:55 PM, Bret Stern wrote: Care to share the SSD hardware you're using? I've used none to date, and have some critical data I would like to put on a development server to test with. Regards, Bret Stern SSDs are ridiculously cheap when you consider the performance difference.

[GENERAL] vacuum vs pg_repack for clearing bloat?

2014-01-15 Thread Lists
Our app makes extensive use of temp tables, and this causes a significant amount of bloat that can often only be cleared with a manual vacuum process. We're looking for a better way that doesn't involve locking, we found pg_repack and pg_reorg and were wondering if anybody here could weigh in

Re: [GENERAL] vacuum vs pg_repack for clearing bloat?

2014-01-15 Thread Lists
On 01/15/2014 04:24 PM, Tom Lane wrote: Lists li...@benjamindsmith.com writes: Our app makes extensive use of temp tables, and this causes a significant amount of bloat that can often only be cleared with a manual vacuum process. We're looking for a better way that doesn't involve locking, we

Re: [GENERAL] Making substrings uppercase

2013-09-10 Thread Oliver Kohll - Mailing Lists
On 9 Sep 2013, at 21:03, Alvaro Herrera alvhe...@2ndquadrant.com wrote: select string_agg(case when words like '*%*' then upper(btrim(words, '*')) else words end, ' ') from regexp_split_to_table('The *quick* *brown* fox jumped over the *lazy* dog', ' ') as words;

[GENERAL] Making substrings uppercase

2013-09-09 Thread Oliver Kohll - Mailing Lists
Hello, Given a string with certain words surrounded by stars, e.g. The *quick* *brown* fox jumped over the *lazy* dog can you transform the words surrounded by stars with uppercase versions, i.e. The QUICK BROWN fox jumped over the LAZY dog Given text in a column sentence in table sentences,

Re: [GENERAL] Making substrings uppercase

2013-09-09 Thread Oliver Kohll - Mailing Lists
On 9 Sep 2013, at 14:41, David Johnston pol...@yahoo.com wrote: Oliver Kohll - Mailing Lists wrote select regexp_replace(sentence,'\*(.*?)\*','' || upper('\1'),'g') from sentences; Yeah, you cannot embed a function-call result in the replace with section; it has to be a literal

Re: [GENERAL] replication stops working

2013-07-08 Thread Daniel Serodio (lists)
John DeSoi wrote: I have a 9.2 hot standby setup with replication via rsync. For the second time, it has stopped working with no apparent error on the primary or standby. Last time this happened I fixed it by restarting the primary. Yesterday I started a new base backup around noon and it

[GENERAL] AWS, cascading replication and WAL archiving

2013-07-03 Thread Daniel Serodio (lists)
I currently have a working 9.2 master + hot standby setup, using asynchronous replication and WAL archiving (via a shared NFS mount), running in our colocated datacenter. I need to migrate this to AWS, with as little downtime as possible. My plan is to create two cascading standbys,

Re: [GENERAL] Cannot connect to remote postgres database

2013-07-03 Thread Daniel Serodio (lists)
Stephen Carville wrote: I have been asked to evaluate Oracle, mysql and postgresql as a possible replacement for our existing Oracle and MsSQL databases. Oracle and mysql I pretty much have covered. Postgresql, OTOH, is somewhat less cooperative. I have the software (v 8.4.13) installed on 64

Re: [GENERAL] Unexpectedly high disk space usage RESOLVED (Manual reindex/vacuum)

2012-11-12 Thread Lists
On 11/10/2012 02:21 PM, Jeff Janes wrote: On Fri, Nov 9, 2012 at 4:28 PM, Lists li...@benjamindsmith.com wrote: ... 3) For each of the tables from #2, run the commands REINDEX TABLE $table; VACUUM FULL ANALYZE $table; The end result is a squeaky-clean database server with expected disk

[GENERAL] Enabling Autovacuum Postgres 9.1 (was Unexpectedly high disk space usage)

2012-11-12 Thread Lists
The good news is that we have now resolved our critical problem (disk space overuse) with a somewhat hackish, slow answer that is nonetheless good enough for now. Now I'd like to work out how to get autovacuum to work smoothly within our cluster. I'm happy to try to clarify my notes and post

Re: [GENERAL] Unexpectedly high disk space usage RESOLVED (Manual reindex/vacuum)

2012-11-12 Thread Lists
On 11/12/2012 01:31 PM, Jeff Janes wrote: On Mon, Nov 12, 2012 at 10:38 AM, Lists li...@benjamindsmith.com wrote: On 11/10/2012 02:21 PM, Jeff Janes wrote: On Fri, Nov 9, 2012 at 4:28 PM, Lists li...@benjamindsmith.com wrote: 2) It was sheer chance that I discovered the need to reindex prior

Re: [GENERAL] Unexpectedly high disk space usage RESOLVED (Manual reindex/vacuum)

2012-11-11 Thread Lists
On 11/09/2012 05:26 PM, Steve Crawford wrote: Bloat in pg_attribute would correlate with A) (or any constant creation/destruction of tables). You can vacuum and/or reindex the system tables if you are connected as the superuser but you are better off preventing bloat by appropriate adjustment

Re: [GENERAL] Unexpectedly high disk space usage RESOLVED (Manual reindex/vacuum)

2012-11-09 Thread Lists
As I've spent a considerable amount of time trying to sort this out, I'm posting it for the benefit other users. I've experienced persistent, ongoing issues with autovacuum in a mixed read/write environment with midrange hardware (16 core Xeon, 128 GB RAM, 200 GB SATA3 6 Gb SSDs for disk I/O

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-08 Thread Lists
On 11/07/2012 12:42 PM, Tom Lane wrote: ... because it occasionally causes transactions and queries to hang when an update causes a vacuum mid-day, effectively taking us offline randomly. I suspect this claim is based on ancient and no longer very relevant experience. Even so, if I felt the

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-07 Thread Lists
On 11/07/2012 09:01 AM, Jeff Janes wrote: Ben, did you ever figure out where the space was going? I think we've found where the space is going, but I still don't yet know how to resolve it. I modified your query thusly in order to get a total of space used, and got an answer that matches

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-07 Thread Lists
On 11/07/2012 12:42 PM, Tom Lane wrote: So you've turned off autovacuum, and are carefully not vacuuming the system catalogs. That's your problem all right. Is there a particularly good reason why this script isn't a one-liner VACUUM? Back in the 8.x days, we experienced vacuum full analyze

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-07 Thread Lists
On 11/07/2012 12:58 PM, Scott Marlowe wrote: My experience is that if autovac is causing problems with stalled queries etc you're either A: running ancient pg versions (pre 8.3), B: Running WAY too aggressive settings in autovac (100 threads, no nap time, cost limit of 10 etc.) or C: Your

Re: [GENERAL] How to verify pg_dump files

2012-11-07 Thread Lists
On 11/07/2012 11:56 AM, Igor Neyman wrote: The only 100% fool-proof test would be to restore from your backup files. Regards, Igor Neyman Our internal process is to back up production databases regularly, and then use the backups offsite to populate copies of databases for developer use.

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-06 Thread Lists
Jeff, thanks for the feedback! On 11/05/2012 08:51 PM, Jeff Janes wrote: My first guesses would be things that are not directly under the databases control, such as: 1) your server logs are accumulating and you aren't doing anything about them I'm guessing that this is not the case:

Re: [GENERAL] Unexpectedly high disk space usage

2012-11-06 Thread Lists
I followed your example, the result is at the bottom. Based on this it would seem that there are 3-4 databases that seem to be the culprit. How could I get more depth/detail on what specifically is the problem? -Ben On 11/05/2012 07:10 PM, Scott Marlowe wrote: What does du -sh have to say

[GENERAL] Error registering at postgresql.org

2012-11-05 Thread Daniel Serodio (lists)
I'm trying to register at postgresql.org so I can edit the wiki to fix a broken link. I received a link on my e-mail so I could set my password, but when I submit the Change password form I get an error: Forbidden (403) CSRF verification failed. Request aborted. More information is available

[GENERAL] Unexpectedly high disk space usage

2012-11-05 Thread Lists
We upgraded to 9.1 from 8.4 over the summer a few months ago, to new DB servers with more disk space and memory. Unexpectedly, the DB servers have steadily increased their disk space usage since. Reported system load doesn't seem to be affected. It's happening to all our DB servers running

[GENERAL] Index creation problem

2012-10-19 Thread Oliver Kohll - Mailing Lists
Hi, I'm getting a problem where my application hangs in the process of adding a field to a table. The app adds the field, then creates an index on the field. It hangs for ages (minutes) until I cancel the query. My investigation so far has been Look at current queries: agilebasedata=# SELECT

Re: [GENERAL] Index creation problem

2012-10-19 Thread Oliver Kohll - Mailing Lists
On 19 Oct 2012, at 13:28, Frank Lanitz fr...@frank.uvena.de wrote: Just an idea without bigger investigation: Whare are the idle in transactions are doing? Maybe they are blocking the create index. Cheers, Frank Good question, I don't know. The app runs on Java / Apache Tomcat, which

Re: [GENERAL] Index creation problem

2012-10-19 Thread Oliver Kohll - Mailing Lists
On 19 Oct 2012, at 15:09, Albe Laurenz laurenz.a...@wien.gv.at wrote: You should always include the list in your replies - other people might be interested in the solution. Oops, thought I had. There must be at least two transactions involved to create a locking problem like you

Re: [GENERAL] database corruption questions

2012-10-17 Thread Daniel Serodio (lists)
Craig Ringer wrote: On 10/14/2012 05:53 AM, Heine Ferreira wrote: Hi Are there any best practices for avoiding database corruption? * Maintain rolling backups with proper ageing. For example, keep one a day for the last 7 days, then one a week for the last 4 weeks, then one a month for the

Re: [GENERAL] allow servers to access to the same data

2012-10-17 Thread Daniel Serodio (lists)
Tulio wrote: You can use a stream replication in hot standby (native) to have the same data and access in both (but not update and insert in the slave, just select) and create a virtual IP using heartbeat.. configuring a master to use some IP (virtual) and when this lost the IP, the second

Re: [GENERAL] allow servers to access to the same data

2012-10-17 Thread Daniel Serodio (lists)
Shaun Thomas wrote: On 10/17/2012 12:53 PM, Daniel Serodio (lists) wrote: I've come across a few mentions of Heartbeat being used for PostgreSQL failover, do have any links to more information about this? This was the subject of my talk at PG Open this year. I've got the entire PDF

[GENERAL] Is pg_basebackup also for regular backups?

2012-10-15 Thread Daniel Serodio (lists)
I was reading the documentation for pg_basebackup and it states that resulting backups can be used both for point-in-time recovery and as the starting point for a log shipping or streaming replication standby servers. Should pg_basebackup also be used for regular backups, or only for

Re: [GENERAL] Help estimating database and WAL size

2012-10-15 Thread Daniel Serodio (lists)
Jasen Betts wrote: On 2012-10-08, Daniel Serodio (lists)daniel.li...@mandic.com.br wrote: We are preparing a PostgreSQL database for production usage and we need to estimate the storage size for this database. We're a team of developers with low expertise on database administration, so we

Re: [GENERAL] Help estimating database and WAL size

2012-10-15 Thread Daniel Serodio (lists)
John R Pierce wrote: On 10/08/12 1:39 PM, Daniel Serodio (lists) wrote: 3) Estimate the size of the transaction log ** We've got no idea how to estimate this, need advice ** postgres doesn't have a 'transaction log', it has the WAL (Write-Ahead Logs). These are typically 16MB each

Re: [GENERAL] Is pg_basebackup also for regular backups?

2012-10-15 Thread Daniel Serodio (lists)
Magnus Hagander wrote: On Mon, Oct 15, 2012 at 10:15 PM, Daniel Serodio (lists) daniel.li...@mandic.com.br wrote: I was reading the documentation for pg_basebackup and it states that resulting backups can be used both for point-in-time recovery and as the starting point for a log shipping

[GENERAL] Help estimating database and WAL size

2012-10-08 Thread Daniel Serodio (lists)
We are preparing a PostgreSQL database for production usage and we need to estimate the storage size for this database. We're a team of developers with low expertise on database administration, so we are doing research, reading manuals and using our general IT knowledge to achieve this. We

[GENERAL] RFE: Column aliases in WHERE clauses

2012-09-17 Thread Daniel Serodio (lists)
It would be nice if PostgreSQL supported column aliases in WHERE clauses, eg: SELECT left(value, 1) AS first_letter FROM some_table WHERE first_letter 'a'; Is this the proper mailing list for such feature requests? Thanks in advance, Daniel Serodio -- Sent via pgsql-general mailing list

Re: [GENERAL] RFE: Column aliases in WHERE clauses

2012-09-17 Thread Daniel Serodio (lists)
Ryan Kelly wrote: On Mon, Sep 17, 2012 at 06:18:53PM -0300, Daniel Serodio (lists) wrote: It would be nice if PostgreSQL supported column aliases in WHERE clauses, eg: SELECT left(value, 1) AS first_letter FROM some_table WHERE first_letter 'a'; Is this the proper mailing list

Re: [GENERAL] Too far out of the mainstream

2012-09-05 Thread Oliver Kohll - Mailing Lists
Here's a bit of positive news spin - in a backhanded way perhaps, but still a compliment: http://www.theregister.co.uk/2012/08/31/postgresql_too_cool_for_school/ Oliver www.agilebase.co.uk -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your

Re: [GENERAL] Amazon High I/O instances

2012-08-21 Thread Oliver Kohll - Mailing Lists
On 21 Aug 2012, at 13:32, Vincent Veyron vv.li...@wanadoo.fr wrote: Since Amazon has added new high I/O instance types and EBS volumes, anyone has done some benchmark of PostgreSQL on them ? I wonder : is there a reason why you have to go through the complexity of such a setup, rather

Re: [GENERAL] Slow information_schema.views

2012-03-22 Thread Oliver Kohll - Mailing Lists
On 22 Mar 2012, at 10:17, Albe Laurenz wrote: Or is there a better way of finding view dependencies? I see there's a pg_catalog entry for tables that a view depends on but that's not what I'm after. You can use pg_depend and pg_rewrite as follows: SELECT DISTINCT r.ev_class::regclass

[GENERAL] Slow information_schema.views

2012-03-19 Thread Oliver Kohll - Mailing Lists
Hello, I'm doing some SELECTs from information_schema.views to find views with dependencies on other views, i.e. SELECT table_name FROM information_schema.views WHERE view_definition ILIKE '%myviewname%'; and each is taking about 1/2 a second, which is getting a bit slow for my use. There

Re: [GENERAL] Multi master use case?

2012-01-28 Thread Oliver Kohll - Mailing Lists
On 28 Jan 2012, at 15:27, Greg Sabino Mullane g...@turnstep.com wrote: Is this a case for multi master do you think? I.e. running one on the internet, one locally. Yes, could be. b) changing schemas (new tables, fields, views etc.) as well as data That's a tall order; I don't think

Re: [GENERAL] explain analyse and nested loop joins

2011-11-07 Thread Oliver Kohll - Mailing Lists
Stehule 2011/11/5 Oliver Kohll - Mailing Lists oliver.li...@gtwm.co.uk: b2deliveryorders.complete = false AND b2deliveryorders.invoiced = false -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql

[GENERAL] explain analyse and nested loop joins

2011-11-05 Thread Oliver Kohll - Mailing Lists
Hi, I have a query I'm trying to optimise. It takes just under a second to run, not too bad for my users but I'm worried that as the size of the data increases, it will get worse. Of course the plan may change when that happens but I'd also like to learn a bit more about optimisation anyway.

[GENERAL] Fwd: explain analyse and nested loop joins

2011-11-05 Thread Oliver Kohll - Mailing Lists
dbvcalc_delivery_charges ON b2deliveryorders.idb2deliveryorders = dbvcalc_delivery_charges.idb2deliveryorders WHERE b2deliveryorders.complete = false AND b2deliveryorders.invoiced = false ORDER BY b2deliveryorders.expectedby NULLS FIRST; Oliver Begin forwarded message: From: Oliver Kohll - Mailing Lists

Re: [GENERAL] Random multiple times

2011-09-22 Thread Oliver Kohll - Mailing Lists
Many thanks both, those solutions are great and have gone in my wiki for future ref. Regards Oliver On 21 Sep 2011, at 21:56, Szymon Guz wrote: Short answer is: yes. More information you can find here http://simononsoftware.com/problem-with-random-in-postgresql-subselect/ regards

[GENERAL] Random multiple times

2011-09-21 Thread Oliver Kohll - Mailing Lists
Hi, I understand random() is a volatile function and runs multiple times for multiple rows returned by a SELECT, however is there a way of getting it to run multiple times *within* another function call and in the same row. i.e. something like select regexp_replace('+1 555 555 555', E'\\d',

Re: [GENERAL] Realtime Query Dashboard Results

2011-01-07 Thread Oliver Kohll - Mailing Lists
On 7 Jan 2011, at 22:02, THOMPSON, JARED (ATTBAPCO) jt0...@att.com wrote: I assume when people use dashboards they are not being queried every second for updating but maybe every minute? Are there any tools that work good on top of postgres? (I see in the stock market (though I am looking

Re: [GENERAL] locating cities within a radius of another

2010-07-22 Thread Oliver Kohll - Mailing Lists
On 21 Jul 2010, at 23:14, Joe Conway m...@joeconway.com wrote: If you want something simple, and not requiring PostGIS, but plpgsql instead, see: http://archives.postgresql.org/pgsql-sql/2003-12/msg00193.php For completeness, the earthdistance module also provides the distance between two

Re: [GENERAL] locating cities within a radius of another

2010-07-22 Thread Oliver Kohll - Mailing Lists
On 22 Jul 2010, at 12:57, Geoffrey wrote: For completeness, the earthdistance module also provides the distance between two lat/longs, the point@point syntax is simple to use: http://www.postgresql.org/docs/8.3/static/earthdistance.html Disgregard my last post, Surely as soon as I hit

[GENERAL] Backups / replication

2010-06-15 Thread Oliver Kohll - Mailing Lists
Hello, I'm interested in using WAL shipping / replication for backup purposes but have no interest in failover. Currently my situation is: I have two servers, live and backup, which are in different cities. The backup server is also a test/development machine. Backups of my most important

[GENERAL] Cumulative count (running total) window fn

2010-04-29 Thread Oliver Kohll - Mailing Lists
Hello, Many thanks to andreas.kretschmer for this helpful reply about how to set up a window function to perform a running total: http://archives.postgresql.org/pgsql-general/2010-03/msg01122.php It works perfectly with the simple test data but I've just got back to work, tried implementing it

Re: [GENERAL] Cumulative count (running total) window fn

2010-04-29 Thread Oliver Kohll - Mailing Lists
On 29 Apr 2010, at 10:01, Magnus Hagander wrote: select extract(year from signup_date), count(email_address), sum(count(email_address)) over (partition by 1 order by 1 asc rows unbounded preceding) from email_list group by 1 order by 1; Does anyone have any other ideas? Aren't you

Re: [GENERAL] Cumulative count (running total) window fn

2010-04-29 Thread Oliver Kohll - Mailing Lists
Aren't you looking for something along the line of: SELECT year, sum(c) over (order by year) FROM ( SELECT extract(year from signup_date) AS year, count(email_address) AS c FROM email_list GROUP BY extract(year from signup_date) ) (adjust for typos, I didn't test it) Yes that

Re: [GENERAL] Cumulative count (running total) window fn

2010-04-29 Thread Oliver Kohll - Mailing Lists
Curious note - how does the non-subselect version and the subselect version compare performance-wise? Magnus, On a test table with 12,000 rows there's not much in it, the subselect has a simpler plan but they both take practically the same time. The two plans (note I've been rewriting the

Re: [GENERAL] Invalid objects

2010-04-25 Thread Oliver Kohll - Mailing Lists
On 25 Apr 2010, at 07:34, Scott Bailey wrote: I can point you to the relevant code in GitHub if you're interested (it's Java). Absolutely. Thanks Scott Bailey Line 813 of http://github.com/okohll/agileBase/blob/master/gtpb_server/src/com/gtwm/pb/model/manageSchema/DatabaseDefn.java -

Re: [GENERAL] Invalid objects

2010-04-24 Thread Oliver Kohll - Mailing Lists
Scott, I implemented a system exactly like this for the app in my signature below. Basically the system stores metadata containing each view definition and the joins between them. When someone needs to alter a view, say to remove a column, a DROP CASCADE is performed then each view is

[GENERAL] Running/cumulative count using windows

2010-03-30 Thread Oliver Kohll - Mailing Lists
Hello, I'm still reasonably new to windowing functions, having used a few since 8.4 came out. I wonder if anyone can help with this one. I've got a table of email addresses in a CRM system similar to the following: CREATE TABLE test( signup_date timestamp, email_address varchar(1000) );

Re: [GENERAL] [pgsql-general] looking for a powerful frontend/teport generator

2010-03-29 Thread Oliver Kohll - Mailing Lists
On 29 Mar 2010, at 14:33, Clemens Eisserer linuxhi...@gmail.com wrote: Hi, Sorry for beeing a bit off-topic. Recently I've done some database-fontends, which I used java+swingset+netbeans-gui-builder for. Compared to plain java development is quite fast - however I wonder wether you could

[GENERAL] pg_dump new version

2010-02-23 Thread Oliver Kohll - Mailing Lists
Hello, May I take a lull between PG releases to ask an upgrade Q? Documentation and people often recommend that when doing a major version upgrade, to dump data from the old server with the new version of pg_dump, since the new pg_dump may have bugfixes not available to the old. I've never

[GENERAL] pg_dump: SQL command failed

2010-02-12 Thread Oliver Kohll - Mailing Lists
Hello, I've just come across this in an output from a cron backup script: /etc/cron.hourly/gtwm_backup_databases.sh: pg_dump: SQL command failed pg_dump: Error message from server: ERROR: could not open relation with OID 572838 pg_dump: The command was: SELECT

Re: [GENERAL] pgAdmin in 8.4 installation uses tools from 8.3 installation

2009-12-09 Thread Andy Shellam (Mailing Lists)
We just upgraded a customer's PostgreSQL installation from 8.3 to 8.4.1. I wanted to make a small change to the database. I wanted to take a backup before I did it, just in case. When I run pgAdmin from the PostgreSQL/8.4/bin folder and try to take a backup, the backup fails. The

Re: [GENERAL] FATAL: no pg_hba.conf entry for host “::1”

2009-12-05 Thread Andy Shellam (Mailing Lists)
Hi, So the issue seems to be with the last line on IPv6, to be honest i dont even know what IPv6 is, could disabling IPv6 do the trick or do i need to add something? Your machine is connecting to PostgreSQL using IPv6's localhost address. IPv6 is a newer format of IP addressing that

Re: [GENERAL] generic modelling of data models; enforcing constraints dynamically...

2009-09-27 Thread Oliver Kohll - Mailing Lists
On 27 Sep 2009, at 21:10, InterRob rob.mar...@gmail.com wrote: Peter, may I invite you to privately share some more details on the system you are using and the design of it? Did you implement it using PostgreSQL? Looking forward to your reply. (And with respect to your previous message:

Re: [GENERAL] generic modelling of data models; enforcing constraints dynamically...

2009-09-25 Thread Oliver Kohll - Mailing Lists
On 25 Sep 2009, at 07:22, InterRob rob.mar...@gmail.com wrote: I guess it IS quite overengineered indeed... What I'm trying to do is to facilitate different fieldwork methodologies for archaeological research (on project basis); there is no final agreement on data structure and semantics;

Re: [GENERAL] Viable alternatives to SQL?

2009-08-28 Thread Oliver Kohll - Mailing Lists
On 27 Aug 2009, at 17:11, pgsql-general-ow...@postgresql.org wrote: From: Kelly Jones kelly.terry.jo...@gmail.com Date: 27 August 2009 14:43:51 BST To: pgsql-general@postgresql.org Subject: Viable alternatives to SQL? Many sites let you search databases of information, but the search queries

[GENERAL] Division by zero

2009-07-31 Thread Oliver Kohll - Mailing Lists
Hello, Divide by zero errors have come up a couple of times on this list (once raised by me). I wonder if I could propose a feature for discussion. Could the result of a division by zero be treated as infinity or null, rather than raising an error? Floating point types already have the

Re: [GENERAL] [pgsql-general] Daily digest v1.9081 (14 messages)

2009-06-08 Thread Oliver Kohll - Mailing Lists
On 8 Jun 2009, at 17:23, Merlin Moncure mmonc...@gmail.com wrote: Is there a way when creating a table to limit it to one row? That is, without using a stored procedure? I searched the documentation, but didn't find anything. CREATE TABLE x (...); CREATE UNIQUE INDEX x_only_one_row ON

Re: [GENERAL] Sum of multiplied deltas

2009-06-08 Thread Oliver Kohll - Mailing Lists
On 8 Jun 2009, at 19:01, David Fetter wrote: Hello! I've the following data: datetime | val1 | val2 time1|4 | 40% time2|7 | 30% time3| 12 | 20% ... I'd like to sum up the following: (7-4)*30% + (12-7)*20% + ... This is best done in 8.4 using Windowing. Sadly, it's an

Re: [GENERAL] Division by zero

2009-06-04 Thread Oliver Kohll - Mailing Lists
On 4 Jun 2009, at 13:11, Sam Mason s...@samason.me.uk wrote: You need to take care of only one case here: denominator == 0; rest of the cases will be handled sanely by the database. CASE WHEN packet_size = 0 THEN null ELSE cost/packet_size END as unit_cost Yes; or even shorter:

[GENERAL] Division by zero

2009-06-03 Thread Oliver Kohll - Mailing Lists
Hello, We have a system that allows users to create views containing calculations but divisions by zero are commonly a problem. An simple example calculation in SQL would be SELECT cost / pack_size AS unit_cost from products; Either variable could be null or zero. I don't think there's a

[GENERAL] Foreign key verification trigger conditions

2009-06-01 Thread j-lists
I have an update statement that affects every row in a given table. For that table it changes the value in a single column, which itself has a foreign key constraint. The table has an additional 9 foreign keys, some of which reference large tables. My expectation would be that only the changed

Re: [GENERAL] Foreign key verification trigger conditions

2009-06-01 Thread j-lists
, 2009 at 9:20 AM, Tom Lane t...@sss.pgh.pa.us wrote: j-lists jamisonli...@gmail.com writes: I have an update statement that affects every row in a given table. For that table it changes the value in a single column, which itself has a foreign key constraint. The table has an additional 9

[GENERAL] New 8.4 features

2009-04-20 Thread Oliver Kohll - Mailing Lists
Hello, Some of the new language features in 8.4 seem like pretty major additions. I know that the window functions will be very useful. There have been many times in the past when I've wanted to aggregate in this way: http://elegantcode.com/2009/01/04/sql-window-clause/ If this is

[GENERAL] Open sourcing

2009-02-19 Thread Oliver Kohll - Mailing Lists
Hi, Wondering who has any practical experience of open sourcing a software product? I made a small internal database tool open source a while ago and that worked quite well - www.gtportalbase.com/opensource. People got involved in adding to the code and some people even paid a bit for

[GENERAL] What query on system tables retrieves table or queries definitoin

2006-03-04 Thread lists
What is the query for retrieving a tables and a views definition from the system tables (in 7.4). I am trying to find my way in the system tables and I am finding very confusing, especially way in the way the tables are linked. ---(end of

[GENERAL] What is the syntax for setting a default date in PostgreSQL

2006-02-20 Thread lists
This issue always stumps me. I need to set the default date for a column in postgres. A value for today, today + x days, now (timestamp), now + x amount of days. I never seem to be able to locate it in the documentation or online. Can anyone post it here once and for all for posterity? I will

[GENERAL] Syntax Error Inserting From STDIN?

2005-12-20 Thread Hunter's Lists
I am trying to run the following: COPY departments (id, issue_id, title, description, feature_type) FROM stdin; 23 4 Local BuzzThings to do, people to see, places to go. aspen I get back: COPY departments (id, issue_id, title, description, feature_type) FROM stdin; 23 4 Local

Re: [GENERAL] Syntax Error Inserting From STDIN?

2005-12-20 Thread Hunter's Lists
Interesting. How would I go about solving that? I inserted an extra line between the two, no dice. From: Scott Marlowe [EMAIL PROTECTED] Date: Tue, 20 Dec 2005 13:53:37 -0600 To: Hunter's Lists [EMAIL PROTECTED] Cc: PostgreSQL pgsql-general@postgresql.org Subject: Re: [GENERAL] Syntax

Re: [GENERAL] Syntax Error Inserting From STDIN?

2005-12-20 Thread Hunter's Lists
[EMAIL PROTECTED] Date: Tue, 20 Dec 2005 16:41:32 -0600 To: Hunter's Lists [EMAIL PROTECTED] Cc: PostgreSQL pgsql-general@postgresql.org Subject: Re: [GENERAL] Syntax Error Inserting From STDIN? quick answer, try a different editor. Are you editing in the same environment as the database

Re: [GENERAL] Beyond the 1600 columns limit on windows

2005-11-09 Thread Evandro's mailing lists (Please, don't send personal messages to this address)
is easier and more practical thankeeping thesparse representation inside of the database for my application. On 11/8/05, John D. Burger [EMAIL PROTECTED] wrote: Evandro's mailing lists (Please, don't send personal messages to thisaddress) wrote: It has nothing to do with normalisation

[GENERAL] Beyond the 1600 columns limit on windows

2005-11-08 Thread Evandro's mailing lists (Please, don't send personal messages to this address)
Hi guys, I would like to know if it is possible to have more than 1600 columns on windows without recompiling postgres. Regards -Evandro-- Evandro M Leite JrPhD Student Software developerUniversity of Southampton, UKPersonal website: http://evandro.orgAcademic website:

Re: [GENERAL] Beyond the 1600 columns limit on windows

2005-11-08 Thread Evandro's mailing lists (Please, don't send personal messages to this address)
Student Software developer University of Southampton, UKPersonal website: http://evandro.orgAcademic website: http://www.soton.ac.uk/~evandroMobile 079 068 70740 Office 023 8055 3644 Home 023 8055 9160 On 11/8/05, Tino Wildenhain [EMAIL PROTECTED] wrote: Evandro's mailing lists (Please, don't send

Re: [GENERAL] Beyond the 1600 columns limit on windows

2005-11-08 Thread Evandro's mailing lists (Please, don't send personal messages to this address)
that my software uses. Probably I should use another data structure but would not be as eficient and practical as the one I use now. Many thanks -Evandro On 08 Nov 2005 05:30:07 -0800, Randal L. Schwartz merlyn@stonehenge.com wrote: Evandro's == Evandro's mailing lists (Please, don't send

[GENERAL] Seq Scan but I think it should be Index Scan

2005-10-26 Thread Edoceo Lists
So the details of it: I'm using PostgreSQL 8.0.3 on a Gentoo kernel 2.6.12 on a P4/2.8G+HT proc, with kernel RAID0 on some SATA drives and 1G RAM. Don't know the bus speed. I'm thinking that my queries are not using indexs correctly and therefore taking longer to complete than they should.

[GENERAL] Large Table Performance

2005-10-21 Thread Edoceo Lists
List, I've got a problem where I need to make a table that is going to grow by an average of 230,000 records per day. There are only 20 columns in the table, mostly char and integer. It's FK'd in two places to another table for import/export transaction id's and I have a serial primary key

[GENERAL] NTFS partition autodetection during instalation

2005-07-13 Thread Evandro's mailing lists (Please, don't send personal messages to this address)
Dear hackers I want to embed postgres into a software installation. I will use silent install, how do I detect which partition is NTFS so I can tell the installer to use that partition? Many thanks -Evandro-- Evandro M Leite JrPhD Student Software developer University of Southampton,

[GENERAL] How can this be optimized, if possible?

2005-07-04 Thread Net Virtual Mailing Lists
Hello, My database has grown far faster then expected and a query which used to run acceptably now does not. I'm trying to figure out a way to make this operate faster and scale better. I'm very open to the idea that this does not need to be done using a SQL query at all - right now I'm

Re: [GENERAL] Peculiar performance observation....

2005-03-15 Thread Net Virtual Mailing Lists
On Mon, 2005-03-14 at 21:14, Net Virtual Mailing Lists wrote: On Mon, 2005-03-14 at 06:11, Net Virtual Mailing Lists wrote: Hello, I am sorry to bring this up again Does anyone have any idea what might be going on here?... I'm very worried about this situation.. ;-( It looks

Re: [GENERAL] Peculiar performance observation....

2005-03-14 Thread Net Virtual Mailing Lists
Hello, I am sorry to bring this up again Does anyone have any idea what might be going on here?... I'm very worried about this situation.. ;-( - Greg Something even more peculiar (at least it seems to me..)... If I drop the index table1_category_gist_idx, I get this: jobs= explain

Re: [GENERAL] Peculiar performance observation....

2005-03-14 Thread Net Virtual Mailing Lists
On Mon, 2005-03-14 at 06:11, Net Virtual Mailing Lists wrote: Hello, I am sorry to bring this up again Does anyone have any idea what might be going on here?... I'm very worried about this situation.. ;-( It looks to me like either you're not analyzing often enough, or your

[GENERAL] Peculiar performance observation....

2005-03-12 Thread Net Virtual Mailing Lists
I have a rather peculiar performance observation and would welcome any feedback on this. First off, the main table (well, part of it.. it is quite large..): Table table1 Column | Type |

Re: [GENERAL] Peculiar performance observation....

2005-03-12 Thread Net Virtual Mailing Lists
Something even more peculiar (at least it seems to me..)... If I drop the index table1_category_gist_idx, I get this: jobs= explain analyze select id from table1 where category @ 'a.b' ORDER BY category; QUERY PLAN

[GENERAL] Problem with inherited table, can you help?...

2005-03-10 Thread Net Virtual Mailing Lists
I have the following three tables and my inserts are blocking each other in a way I just can't understand Can someone point me in the direction as to what is causing this? jobs= \d master.locations Table master.locations Column|

Re: [GENERAL] Disabling triggers in a transaction

2005-03-09 Thread Net Virtual Mailing Lists
Net Virtual Mailing Lists wrote: All I did was added an extra column to my table (I called it batch_process). Then in the trigger do something like (in whichever function you are calling): IF NEW.batch_update IS NOT NULL AND NEW.batch_update = ''t'' THEN NEW.batch_process := NULL

Re: [GENERAL] Disabling triggers in a transaction

2005-03-08 Thread Net Virtual Mailing Lists
It is the only known way to control triggers though it isn't regularly tested by the developers. I think I've come up with another way.. I posted this recently, but did not get any feedback on it so I'm not sure how dumb it is... It is working really great for me though All I did was

  1   2   >