== WöchentlicherPostgreSQL Newsletter - 16.August 2009

Der Originalartikel befindet sich unter:
http://www.postgresql.org/community/weeklynews/pwn20090816


== Wöchentlicher PostgreSQL Newsletter - 16. August 2009 ==

Das erste Commitfest der Version 8.5 kommt bald zum Abschluß. Mit rund
40 committeten Patches und nur 5 abgelehnten Patches läuft die
PostgreSQL 8.5 Entwicklung eleganter und noch produktiver als dies bei
8.4 der Fall war.

== PostgreSQL Produkt Neuigkeiten ==

pgfincore 0.3, ein Werkzeug um festzustellen, welche PG Dateien im OS
Cache vorhanden sind, ist erschienen.
http://pgfoundry.org/projects/pgfincore/

pgpool-II 2.2.3, ein Connection Pooler und mehr, ist erschienen.
http://pgfoundry.org/projects/pgpool/

== PostgreSQL Jobs im August ==

http://archives.postgresql.org/pgsql-jobs/2009-08/threads.ph p

== PostgreSQL Lokal ==

Das OpenSQL Camp findet am 22. und 23. August in St. Augustin,
Deutschland, in der Nähe von Bonn und Köln, statt.
http://opensqlcamp.org/Events/2009/

Die Deutsche PostgreSQL Usergruppe wird einen Dev-Room auf der
FrOSCon am Sonntag, dem 23. August 2009 haben. Der Call for Papers
ist eröffnet:
http://andreas.scherbaum.la/blog/archives/573-Call-for-Paper s-fuer-den-Post=
greSQL-Devroom-auf-der-FrOSCon-2009.html

Der CfP für PyCon Argentina ist bis zum 29. Juni 2009 23:59 ART
geöffnet. Die Konferenz selbst findet in Buenos Aires am 4. und 5.
September 2009 statt.
http://ar.pycon.org/2009/rfp/

Andreas (ads) Scherbaum wird einen Kurs "PostgreSQL im
Unternehmenseinsatz" an der Volkshochschule Magdeburg, Deutschland,
vom 7. bis zum 11. Septemper 2009 geben. Details unter:
http://andreas.scherbaum.la/blog/archives/574-PostgreSQL-als -Bildungsurlaub=
..html

Es findet eine Konferenz in Athens, Georgia, USA am 19. September
2009 statt. Der CfP ist eröffnet.
http://www.postgresqlconference.org/2009/pgday/athens

Es findet eine Konferenz in Seattle, Washington, USA am 16.-18.
Oktober 2009 statt. Der CfP ist eröffnet.
http://www.postgresqlconference.org/2009/west

PGCon Brasilien wird am 23.-24. Oktober 2009 auf dem Unicamp in
Campinas, Sao Paulo, stattfinden. Der CfP ist eröffnet!
http://pgcon.postgresql.org.br/2009/chamadas.en.php

PGDay.EU 2009 wird an der Telecom ParisTech Universität in Paris,
Frankreich, am 6. und 7. November 2009 stattfinden. Der CfP ist
eröffnet. Vorträge einreichen!
http://www.pgday.eu/

OpenSQL Camp in Portland sucht Sponsoren. Bereite deine Reisepläne
jetzt vor! :)
http://www.chesnok.com/daily/2009/07/29/opensql-camp-comes-t o-portland-nove=
mber-14-15-2009/

Die 10. jährliche JPUG Konferenz hat den Aufruf für Vorträge=
gestartet.
Die Konferenz findet am 20-21. November 2009 in Tokio, Japan, statt.
http://archives.postgresql.org/pgsql-announce/2009-05/msg000 18.php

FOSDEM 2010 wird am 6./7. Februar 2010 in Brüssel stattfinden.
http://www.fosdem.org/

== PostgreSQL in den News ==

Planet PostgreSQL: http://planet.postgresql.org/

Dieser wöchentliche PostgreSQL Newsletter wurde erstellt von David
Fetter.

Sende Neuigkeiten und Ankündigungen bis Sonntag, 15 Uhr Pazifischer
Zeit. Bitte sende englische Beiträge an david@fetter.org, deutsche an
pwn@pgug.de, italienische an pwn@itpug.org.

== Angewandte Patches ==

Andrew Dunstan committed:

- In pgsql/doc/src/sgml/ref/psql-ref.sgml, re-add documentation for
--no-readline option of psql, mistakenly removed a decade ago.
Backpatch to release 7.4.

Tom Lane committed:

- Extend EXPLAIN to support output in XML or JSON format. There are
probably still some adjustments to be made in the details of the
output, but this gets the basic structure in place. Robert Haas

- In pgsql/doc/src/sgml/func.sgml, adjust extract(epoch) example to
clarify that it includes fractional seconds, per gripe from Richard
Neill. Also, add a cross-reference to the to_timestamp function.

- Support EEEE (scientific notation) in to_char(). Pavel Stehule,
Brendan Jurd

- In pgsql/src/backend/commands/analyze.c, fix old bug in
log_autovacuum_min_duration code: it was relying on being able to
access a Relation entry it had just closed. I happened to be
testing with CLOBBER_CACHE_ALWAYS, which made this a guaranteed core
dump (at least on machines where sprintf %s isn't forgiving of a
NULL pointer). It's probably quite unlikely that it would fail in
the field, but a bug is a bug. Fix by moving the relation_close
call down past the logging action.

- Allow backends to start up without use of the flat-file copy of
pg_database. To make this work in the base case, pg_database now
has a nailed-in-cache relation descriptor that is initialized using
hardwired knowledge in relcache.c. This means pg_database is added
to the set of relations that need to have a Schema_pg_xxx macro
maintained in pg_attribute.h. When this path is taken, we'll have
to do a seqscan of pg_database to find the row we need. In the
normal case, we are able to do an indexscan to find the database's
row by name. This is made possible by storing a global relcache
init file that describes only the shared catalogs and their indexes
(and therefore is usable by all backends in any database). A new
backend loads this cache file, finds its database OID after an
indexscan on pg_database, and then loads the local relcache init
file for that database. This change should effectively eliminate
number of databases as a factor in backend startup time, even with
large numbers of databases. However, the real reason for doing it
is as a first step towards getting rid of the flat files altogether.
There are still several other sub-projects to be tackled before that
can happen.

- In pgsql/doc/src/sgml/.cvsignore, the html-stamp and man-stamp files
also need to be cvsignore'd.

- In pgsql/src/backend/commands/tablecmds.c, improve error message for
the case where a requested foreign key constraint does match some
unique index on the referenced table, but that index is only
deferrably unique. We were doing this nicely for the
default-to-primary-key case, but were being lazy for the other case.
Dean Rasheed

- In pgsql/src/backend/optimizer/prep/prepunion.c, put back
adjust_appendrel_attrs()'s code for dealing with RestrictInfo. I
mistakenly removed it last month, thinking it was no longer needed
--- but it is still needed for dealing with joininfo lists.
Fortunately this bit of brain fade hadn't made it into any released
versions yet.

- Add a simple test case covering a join against an inheritance tree,
since we're evidently not testing that at all right now :-(

- Repair breakage of Wisconsin benchmark due to change of command line
syntax for standalone backends. Although we probably ought to just
remove this long-obsolete test case from our code, it seems
worthwhile to document the issue and fix in CVS first. Jeff Janes.

- In pgsql/doc/src/sgml/Makefile, make sure that 'make distclean'
cleans out all files that are not meant to be shipped. Also, allow
'make clean' to remove intermediate working files.

- Remove Wisconsin benchmark files. This test is clearly not being
used anymore, since it's been broken for long periods of time
without anyone noticing. Per discussion, it's not worth keeping in
our source tree.

- In pgsql/src/backend/catalog/pg_type.c, fix incorrect encoding-aware
name truncation in makeArrayTypeName(). truncate_identifier won't
do anything if the passed-in strlen is already less than
NAMEDATALEN, which it always would be given the strlcpy usage. This
has been broken since the arrays-of-composite-types code went in.
Arguably truncate_identifier is suffering from excessive
optimization and should always process the string, but for the
moment I'll take the more localized patch. Per bug #4987.

- In pgsql/doc/src/sgml/func.sgml, fix imprecise documentation of
random(): it never returns 1.0. This was changed in 8.2 but the
documentation was not corrected. Per gripe from Sam Mason.

Magnus Hagander committed:

- In pgsql/src/tools/msvc/Project.pm, back-patch the multiple
CPUs/cores when building on MSVC. This only affects the C compiler
step - we still only build one target at a time.

- Reserve the shared memory region during backend startup on Windows,
so that memory allocated by starting third party DLLs doesn't end up
conflicting with it. Hopefully this solves the long-time issue with
"could not reattach to shared memory" errors on Win32. Patch from
Tsutomu Yamada and Magnus Hagander, based on idea from Trevor
Talbot.

Bruce Momjian committed:

- In pgsql/src/tools/fsync/test_fsync.c, adjust test_fsync code to be
more sane. Backpatch to 8.4.X.

- In pgsql/doc/src/sgml/ref/psql-ref.sgml, remove tab in SGML.

Alvaro Herrera committed:

- In pgsql/src/backend/utils/adt/formatting.c, refactor
NUM_cache_remove calls in error report path to a PG_TRY block. The
code in the new block was not reindented; it will be fixed by
pgindent eventually.

- In pgsql/doc/src/sgml/catalogs.sgml, fix number of columns declared
for pg_user_mappings description table.

- In pgsql/doc/src/sgml/geqo.sgml, fix URL to "The Hitch-Hiker's Guide
to Evolutionary Computation". Per Andreas Wenk, Andres Freund and
Rob Wultsh. Thanks, Robert Haas, for the patch.

- In pgsql/doc/src/sgml/Makefile, refactor some $(JADE.tex.call)s.

- In pgsql/GNUmakefile.in, be able to easily figure out the target
directory of "make dist".

Peter Eisentraut committed:

- In pgsql/doc/src/sgml/Makefile, simplify and speed up man page
installation.

- In pgsql/doc/src/sgml/Makefile, remove unnecessary files from
distribution.

- Add .cvsignore entries for documentation files.

- In pgsql/doc/src/sgml/installation.sgml, document the minimum
required Python version. It turns out that Python 2.2 is the oldest
version that PL/Python compiles with, apparently related to the
introduction of iterators. Might as well document this.

- Split the plpython regression test into test cases arranged by
topic, instead of the previous monolithic setup-create-run sequence,
that was apparently inherited from a previous test infrastructure,
but makes working with the tests and adding new ones weird.

- Augment test coverage in PL/Python, especially for error conditions.

- In pgsql/src/include/catalog/pg_type.h, remove stray character in
type description.

- In pgsql/src/pl/plpython/plpython.c, domain support in PL/Python.
When examining what Python type to convert a PostgreSQL type to on
input, look at the base type of the input type, otherwise all
domains end up defaulting to string.

- PL/Python regression tests for data type handling. Add some checks
on various data types are converted into and out of Python. This is
extracted from Caleb Welton's patch for improved bytea support, but
much expanded.

- Remove the test case from PL/Python tests that depends on the
platform's float output format.

- In pgsql/doc/src/sgml/plperl.sgml, clarify the documentation about
PL/Perl nested subroutines, per Josh Berkus.

Michael Meskes committed:

- Made sure sqlca is reset for declare cursor in Informix mode as
pointed out by Zoltan Boszormenyi.

Teodor Sigaev committed:

- Add prefix support for synonym dictionary.

== Abgelehnte Patches (bis jetzt) ==

Stef Walter's patch to make "samehost" and "samenet" meaningful in
pg_hba.conf. Non-portable.

== Eingesandte Patches ==

Zoltan Boszormenyi sent in another revision of his ECPG patch for
cursors.

Magnus Hagander sent in a back-patch to 8.2 of the patch intended to
fix the "could not reattach to shared memory" on Windows.

Zoltan Boszormenyi sent in two more revisions of the SQLDA and
DESCRIBE patches.

Pierre Frederic Caillaud sent in another version of his table and
index compression patch.

Pierre Frederic Caillaud sent in a patch to speed up COPY operations.

Zoltan Boszormenyi sent in another patch to fix the fact that DECLARE
doesn't set/reset sqlca after DECLARE CURSOR in ECPG.

Zdenek Kotala sent in another revision of his patch to fix
libeditpreferred behavior on Solaris.

Alvaro Herrera sent in a part of Robert Haas's patch which
auto-generates schemapg.h.

Michael Paquier sent in another revision of his patch to allow pgbench
to launch shell commands.

Teodor Sigaev sent in new revisions of unaccent and filter_dictionary.

Zoltan Boszormenyi sent in another patch to fix ECPG's cursor
handling.

Peter Eisentraut sent in another revision of his plpythonu data type
conversion patch.

Jeff Davis sent in a patch to implement opportunistic tuple freezing
via a new GUC: vacuum_freeze_opportunistic_ratio.

ITAGAKI Takahiro sent in a patch to fix encoding issues in the console
and eventlog on Windows.

--=20
Andreas 'ads' Scherbaum
Deutsche PostgreSQL User Group: http://www.pgug.de
DPWN: http://andreas.scherbaum.la/blog/categories/18-PWN

--=20
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