== PostgreSQL Weekly News - May 03 2009 == OpenStreetMap moves to PostgreSQL: http://blog.cleverelephant.ca/2009/04/openstreetmap-moves-to-postgresql.html
== PostgreSQL Product News == autodoc 1.40, an automatic documentation system for PostgreSQL, released. http://pgfoundry.org/projects/autodoc/ == PostgreSQL 8.4 Feature of the Week == New Hash Indexes. As part of Google Summer of Code, our hash indexes have been overhauled so that they now perform better than B-Tree indexes for single-row lookups, and are worth using. Note, however, that the new hash indexes are not yet recovery-safe, and may need to be REINDEXed in the event of a system crash. == PostgreSQL Tip of the Week == The "ltree" contrib module is an implementation of indexed trees, and can be helpful in representing a filesystem or similar heirarchy in your database. == PostgreSQL Jobs for May == http://archives.postgresql.org/pgsql-jobs/2009-05/threads.php == PostgreSQL Local == PgDay Florianopolis will be May 22. Contact Dickson S. Guedes (guedes AT guedesoft DOT net) to participate or submit a paper. http://www.postgresql.org.br/eventos/pgday/sc Percona Performance Conference will be taking place at the Santa Clara Convention Center, Santa Clara, California USA http://conferences.percona.com/ CfP is open for PgDay Sao Paulo, which will be April 24. Contact marins DOT consultoria AT gmail DOT com or marcelojscosta AT gmail DOT com to participate. PostgreSQL Conference, U.S. (JDCon) will be holding a PgDay at LinuxFest Northwest (April 25/26th). The call for papers is out at http://www.postgresqlconference.org/ There will also be PgDays on April 29 in Porto Velho, RO and on April 30 in Ji-Parana, RO. Contact Luis Fernando Bueno: proflfbueno AT gmail DOT com to participate. Michael Renner will be giving a PostgreSQL replication workshop at Netways OSDC 2009 on April 29 and 30 in Nuremberg, Germany. http://www.netways.de/english/osdc/y2009/programm/w/michael_renner_postgresql_repliziert_ein_ueberblick/ PGCon 2009 will be held 21-22 May 2009, in Ottawa at the University of Ottawa. It will be preceded by two days of tutorials on 19-20 May 2009. http://www.pgcon.org/2009/ PgDay Florianopolis will be May 22, 2009. Contact Dickson S. Guedes (guedes AT guedesoft DOT net) to participate or submit a paper. http://www.postgresql.org.br/eventos/pgday/sc Save The Date: pgDay San Jose. Sunday, July 19th 2009 immediately before OSCON. CfP, more info TBA! PGCon Brazil will be take place October 23-24 2009 at Unicamp in Campinas, Sao Paulo state. == PostgreSQL in the News == Planet PostgreSQL: http://planet.postgresql.org/ PostgreSQL Weekly News is brought to you this week by David Fetter and Josh Berkus. Submit news and announcements by Sunday at 3:00pm Pacific time. Please send English language ones to da...@fetter.org, German language to p...@pgug.de, Italian language to p...@itpug.org. == Applied Patches == Bruce Momjian committed: - Proofreading adjustments for first two parts of documentation (Tutorial and SQL). - In pgsql/src/bin/scripts/vacuumdb.c, in VACUUM, FREEZE must be before ANALYZE; fix this in vacuumdb. Docs are already correct. - Blank line Makefile cleanups. Heikki Linnakangas committed: - In pgsql/src/backend/parser/gram.y, move SERVER to the right place in the alphabetically sorted keyword list. - Add pgsql/src/tools/check_keywords.pl script to perform some basic sanity checks to the keyword lists in gram.y and kwlist.h. It checks that all lists are in alphabetical order, and that all keywords present in gram.y are listed in kwlist.h in the right category, and that all keywords in kwlist.h are also in gram.y. What's still missing is to check that all keywords defined with "%token <keyword>" in gram.y are present in one of the keyword lists in gram.y. - In pgsql/src/tools/check_keywords.pl, clean up check_keywords.pl script, making it 'strict' and removing a few leftover unused variables. Laurent Laborde. Tom Lane committed: - Improve pull_up_subqueries logic so that it doesn't insert unnecessary PlaceHolderVar nodes in join quals appearing in or below the lowest outer join that could null the subquery being pulled up. This improves the planner's ability to recognize constant join quals, and probably helps with detection of common sort keys (equivalence classes) as well. - In pgsql/src/backend/utils/adt/datetime.c, when checking for datetime field overflow, we should allow a fractional-second part that rounds up to exactly 1.0 second. The previous coding rejected input like "00:12:57.9999999999999999999999999999", with the exact number of nines needed to cause failure varying depending on float-timestamp option and possibly on platform. Obviously this should round up to the next integral second, if we don't have enough precision to distinguish the value from that. Per bug #4789 from Robert Kruus. In passing, fix a missed check for fractional seconds in one copy of the "is it greater than 24:00:00" code. Broken all the way back, so patch all the way back. - In pgsql/src/pl/plpgsql/src/gram.y, fix a couple of cases where the plpgsql grammar looked for T_WORD and failed to consider the possibility that it would get T_SCALAR, T_RECORD, or T_ROW instead because the word happens to match a plpgsql variable name. In particular, give "duplicate declaration" rather than generic "syntax error" if the same identifier is declared twice in the same block, as per my recent complaint. Also behave more sanely when decl_aliasitem or proc_condition or opt_lblname is coincidentally not T_WORD. Refactor the related productions a bit to reduce duplication. This is a longstanding bug, but it doesn't seem critical enough to back-patch. - Fix plpgsql's EXIT so that an EXIT without a label only matches a loop, never a BEGIN block. This is required for Oracle compatibility and is also plainly stated to be the behavior by our original documentation (up until 8.1, in which the docs were adjusted to match the code's behavior; but actually the old docs said the correct thing and the code was wrong). Not back-patched because this introduces an incompatibility that could break working applications. Requires release note. - Split the release notes into a separate file for each (active) major branch, as per my recent proposal. release.sgml itself is now just a stub that should change rarely; ideally, only once per major release to add a new include line. Most editing work will occur in the release-N.N.sgml files. To update a back branch for a minor release, just copy the appropriate release-N.N.sgml file(s) into the back branch. This commit doesn't change the end-product documentation at all, only the source layout. However, it makes it easy to start omitting ancient information from newer branches' documentation, should we ever decide to do that. - We don't need major_release_split any more. - Install some simple defenses in postmaster startup to help ensure a useful error message if the installation directory layout is messed up (or at least, something more useful than the behavior exhibited in bug #4787). During postmaster startup, check that get_pkglib_path resolves as a readable directory; and if ParseTzFile() fails to open the expected timezone abbreviation file, check the possibility that the directory is missing rather than just the specified file. In case of either failure, issue a hint suggesting that the installation is broken. These two checks cover the lib/ and share/ trees of a full installation, which should take care of most scenarios where a sysadmin decides to get cute. - In pgsql/src/interfaces/libpq/fe-secure.c, fix already-obsolete hint message ... sslverify parameter is no more. - In pgsql/src/backend/utils/misc/guc.c, fix assign_pgstat_temp_directory() to ensure the directory path is canonicalized. Avoid the need to elog(FATAL) on out-of-memory. - Fix unintelligible description created by removing only part of a parenthetical remark. - In pgsql/doc/src/sgml/func.sgml, fix mis-description of XML Schema functions, per discussion. - In pgsql/src/bin/pg_resetxlog/pg_resetxlog.c, fix pg_resetxlog to remove archive status files along with WAL segment files. Fujii Masao. - In pgsql/src/backend/postmaster/postmaster.c, fix missed usage of DLNewElem(). Tatsuo Ishii committed: - pdate UTF-8 <--> EUC_KR, JOHAB, UHC mappings. Patch contributed by Chuck McDevitt. Alvaro Herrera committed: - In pgsql/src/backend/postmaster/postmaster.c, avoid a memory allocation in the backend startup code, to avoid having to check whether it failed. Modelled after catcache.c's usage of DlList, per suggestion from Tom Lane. == Rejected Patches (for now) == No one was disappointed this week :-) == Pending Patches == Alvaro Herrera sent in a doc patch for autovacuum about when ANALYZE is recommended. Robert Haas sent in another revision of the ALTER COLUMN...SET DISTINCT patch. Robert Haas sent in a patch to replace a couple of references to files that no longer exist in the source tree with references to the appropriate URLs. ---------------------------(end of broadcast)--------------------------- -To unsubscribe from this list, send an email to: pgsql-announce-unsubscr...@postgresql.org