Re: [HACKERS] Implementation of GROUPING SETS (T431: Extended grouping capabilities)

2009-05-12 Thread Pavel Stehule
2009/5/13 Joshua Tolley : > On Tue, May 12, 2009 at 11:20:14PM +0200, Pavel Stehule wrote: >> this patch has some bugs but it is good prototype (it's more stable >> than old patch): > > I'm not sure if you're at the point that you're interested in bug reports, but > here's something that didn't beh

Re: [HACKERS] display previous query string of idle-in-transaction

2009-05-12 Thread decibel
On Mar 27, 2009, at 2:36 AM, Simon Riggs wrote: Not really. I want to understand the actual problem with idle-in-transaction so we can consider all ways to solve it, rather than just focus on one method. I have to distinct problems with idle in transaction. One is reporting users / the to

Re: [HACKERS] Implementation of GROUPING SETS (T431: Extended grouping capabilities)

2009-05-12 Thread Joshua Tolley
On Tue, May 12, 2009 at 11:20:14PM +0200, Pavel Stehule wrote: > this patch has some bugs but it is good prototype (it's more stable > than old patch): I'm not sure if you're at the point that you're interested in bug reports, but here's something that didn't behave as expected: 5432 j...@josh*#

Re: [HACKERS] idea: global temp tables

2009-05-12 Thread Bruce Momjian
Robert Haas wrote: > On Thu, Apr 30, 2009 at 8:36 AM, Peter Eisentraut wrote: > > The archives for this thread > > > > http://archives.postgresql.org//pgsql-hackers/2009-04/threads.php#01329 > > > > show a bunch of missing messages. ?Were they being stored in a temporary > > table? > > > > Anywher

Re: [HACKERS] DROP TABLE vs inheritance

2009-05-12 Thread Alex Hunsaker
On Tue, May 12, 2009 at 12:10, Alex Hunsaker wrote: > On Mon, May 11, 2009 at 21:18, Tom Lane wrote: > >> However, he can do that anyway via ALTER TABLE, which >> will happily take out AccessExclusiveLock before it checks any >> permissions.  So I'm not seeing the point of risking unsafe behavior

[HACKERS] Fixing the libxml memory allocation situation

2009-05-12 Thread Tom Lane
I've been poking at the problems described here: http://archives.postgresql.org/message-id/20090306191404.gk3...@alvh.no-ip.org http://archives.postgresql.org/message-id/5265.1240417...@sss.pgh.pa.us I've about come to the conclusion that the only real fix is to abandon our attempt to manage libxm

Re: [HACKERS] pg_migrator alpha 5 - truncates at 10 M rows

2009-05-12 Thread Bruce Momjian
Erik Rijkers wrote: > One complication: I hadn't noticed > that there were 2 tables with a not yet > installed datatype. These tables were > simply not created by the pg_migrator-run. > > I don't know how this influenced the results, > but I'll repeat it in the coming days. I have modified pg_mi

Re: [HACKERS] pg_migrator alpha 5 - truncates at 10 M rows

2009-05-12 Thread Bruce Momjian
Bruce Momjian wrote: > Tom Lane wrote: > > "Erik Rijkers" writes: > > > On Sun, May 10, 2009 02:05, Alvaro Herrera wrote: > > >> I'm wondering that it could have forgotten to migrate the later table > > >> segments ... > > > > > It seems al 'truncated' tables give > > > pg_relation_size(oid) = 10

Re: [HACKERS] Implementation of GROUPING SETS (T431: Extended grouping capabilities)

2009-05-12 Thread Олег Царев
Hello all! If no one objecte (all agree, in other say) i continue work on patch - particulary, i want support second strategy (tuple store instead of hash-table) for save order of source (more cheap solution in case with grouping sets + order by), investigate and brainstorm another optimisation, wr

[HACKERS] Re: [COMMITTERS] pgsql: Fix LOCK TABLE to eliminate the race condition that could make it

2009-05-12 Thread Simon Riggs
On Tue, 2009-05-12 at 17:10 -0400, Tom Lane wrote: > Simon Riggs writes: > > If we're going to require cascaded permissions like this, would it make > > sense to make GRANT cascade down the inheritance tree also? > > That's been discussed before. I forget whether we decided it was a good > ide

Re: [HACKERS] [COMMITTERS] pgsql: Fix LOCK TABLE to eliminate the race condition that could make it

2009-05-12 Thread Tom Lane
Simon Riggs writes: > If we're going to require cascaded permissions like this, would it make > sense to make GRANT cascade down the inheritance tree also? That's been discussed before. I forget whether we decided it was a good idea or not, but in any case it looks like a new feature not a bug

[HACKERS] Re: [COMMITTERS] pgsql: Fix LOCK TABLE to eliminate the race condition that could make it

2009-05-12 Thread Simon Riggs
On Tue, 2009-05-12 at 16:43 +, Tom Lane wrote: > Fix LOCK TABLE to eliminate the race condition that could make it give weird > errors when tables are concurrently dropped. To do this we must take lock > on each relation before we check its privileges. The old code was trying > to do that t

Re: [HACKERS] Show method of index

2009-05-12 Thread Tom Lane
Khee Chin writes: > My sincere apologies for flooding your mailboxes once again, as the > patch attached in the previous post was incorrect. Also, I had failed > to show test-cases of \d in both 8.4 and 8.3 servers. This is still modifying the behavior of \di, which I thought was not wanted.

Re: [HACKERS] New trigger option of pg_standby

2009-05-12 Thread Simon Riggs
On Tue, 2009-05-12 at 14:38 +0300, Heikki Linnakangas wrote: > Simon Riggs wrote: > > On Tue, 2009-05-12 at 14:15 +0300, Heikki Linnakangas wrote: > > > >> Here's another idea: Let's modify xlog.c so that when the server asks > >> for WAL file X, and restore_command returns "not found", the serv

Re: [HACKERS] DROP TABLE vs inheritance

2009-05-12 Thread Robert Haas
On Mon, May 11, 2009 at 11:18 PM, Tom Lane wrote: > So I'm not seeing the point of risking unsafe behavior > in LOCK TABLE. Me neither. ...Robert -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql

Re: [HACKERS] bytea vs. pg_dump

2009-05-12 Thread Bernd Helmle
--On Mittwoch, Mai 06, 2009 19:04:21 -0400 Tom Lane wrote: So I'm now persuaded that a better textual representation for bytea should indeed make things noticeably better here. It would be useful though to cross-check this thought by profiling a case that dumps a comparable volume of text dat

Re: [HACKERS] New trigger option of pg_standby

2009-05-12 Thread Heikki Linnakangas
Simon Riggs wrote: On Tue, 2009-05-12 at 14:15 +0300, Heikki Linnakangas wrote: Here's another idea: Let's modify xlog.c so that when the server asks for WAL file X, and restore_command returns "not found", the server will not ask for any WAL files >= X again (in that recovery session). Presum

Re: [HACKERS] New trigger option of pg_standby

2009-05-12 Thread Simon Riggs
On Tue, 2009-05-12 at 14:15 +0300, Heikki Linnakangas wrote: > Here's another idea: Let's modify xlog.c so that when the server asks > for WAL file X, and restore_command returns "not found", the server > will not ask for any WAL files >= X again (in that recovery session). > Presumably if X do

Re: [HACKERS] New trigger option of pg_standby

2009-05-12 Thread Heikki Linnakangas
Fujii Masao wrote: On Thu, Apr 23, 2009 at 4:49 PM, Heikki Linnakangas wrote: This is getting complicated, though. I guess it would be enough to document that you mustn't copy any extra files into pg_xlog if you use a fast trigger. Agreed. I added this note into document. Attached is the upd