PgSql

pgsql: In HS, Startup process sets SIGALRM whenwaiting for buffer pin.
Simon Riggs wrote: On Mon, 2010-01-25 at 09:52 +0200, Heikki Linnakangas wrote: Would this simple scheme work: When the startup process has waited for a short while (ie deadlock_timeout), it sends the signal "please check if you're holding a pin on buffer X" to all backends. When a backend receiv... 25 Jan 2010 13:57

[HACKERS] Resetting a single statistics counter
In the spirit of finishing off small patches, attached is the one that implements pg_stat_reset_single(), to be able to reset stats for a single table or function. I kind of thought it would be included in the patch from Greg Smith for shared counters so I put it aside, but I guess I misunderstood him there. Anyway... 24 Jan 2010 12:27

Sugerencia de opcion
2009/1/22 Informatica-Cooperativa Cnel. Oviedo <informatica(a)coopovie.com.py>: Buenos Dias todos,                             Soy un usuario de postgres de Paraguay, consulto sobre la posibilidad de inclucion en la futura version la siguiente sentencia(Uso de alias en la condicion HAVING ):     S... 24 Jan 2010 10:08

Review: listagg aggregate
Hello 2010/1/22 David E. Wheeler <david(a)kineticode.com>: Pavel, My review of your listagg patch. Submission Review ----------------- * The diff is a context diff and applies cleanly to HEAD (with just two hunks offset by 2 lines each). * There is documentation, though I'm not sure it needs... 2 Feb 2010 16:10

[HACKERS] further explain changes
Per recent discussion on pgsql-performance, and per discussion on -hackers that it might not be too late for small patches after all, here is a patch (as yet without documentation) which adds some additional instrumentation to EXPLAIN for hashes: number of buckets, number of batches, original number of batches, and... 23 Jan 2010 23:15

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[HACKERS] We've broken something in error recovery
In a somewhat misguided attempt to test something else, I did this in CVS HEAD: do $$begin for i in 1 .. 10000 loop execute 'create table t' || i::text || ' (f1 int primary key)'; end loop; end$$; This ran for awhile and then ran out of lock table space, which was not surprising in hindsight: ERRO... 23 Jan 2010 16:34

Cstring vs. Datum values ( BuildTupleFromCStringsvs. BlessTupleDesc)
On Sat, 23 Jan 2010 15:54:04 +0000 Greg Stark <gsstark(a)mit.edu> wrote: On Sat, Jan 23, 2010 at 12:56 PM, Ivan Sergio Borgonovo <mail(a)webthatworks.it> wrote: And if I can... how, why and when... because I didn't find any clear example in the source tree that gives me a clue about when I'd use one... 23 Jan 2010 13:11

[HACKERS] tab completion for prepared transactions?
Was there a designed-in reason not to have psql tab completion for COMMIT/ROLLBACK PREPARED ...? It does complete the "PREPARED" but not the transaction identifiers. Maybe it's not a common use case, but these transaction identifiers sure can be nontrivial to type. -- Sent via pgsql-hackers mailing list (pg... 23 Jan 2010 13:11

Cstring vs. Datum values ( BuildTupleFromCStrings vs. BlessTupleDesc)
On Sat, Jan 23, 2010 at 12:56 PM, Ivan Sergio Borgonovo <mail(a)webthatworks.it> wrote: And if I can... how, why and when... because I didn't find any clear example in the source tree that gives me a clue about when I'd use one form or the other. There are a few contrib modules which make good examples, y... 23 Jan 2010 13:11