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PostgreSQL Weekly News - March 12, 2003

Mar 23, 2003, 17:00 (0 Talkback[s])
(Other stories by Robert Treat)


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== PostgreSQL Weekly News - Mar 12th 2003 ==

With a lot of quality work already being done, much of the buzz this week surrounded discussion of a front end/ back end protocol overhaul. It's been on the TODO list for quite some time, but some really solid planning is being laid out and I think there is a high probability we might see this undertaken before the next release is put out. Speaking of the TODO list, a couple more items we're marked off the list this week, including a modification of the regression tests to prevent failures due to minor numeric rounding and adding checkpoint_min_warning as a postgresql.conf option to warn about checkpoints that are too frequent.

On the bug squashing front, Tom Lane fixed a bug in UPDATE and DELETES using the new IN implementation, and added regression test to check for the problem in the future. A bug also was fixed in pg_restore where it failed to restore blobs if -X disable-triggers was specified. Another issue was resolved in applications that may have a large number of files open, such that libpq's socket number exceeds the range supported by fd_set. This was mainly done by switching to poll(2) in preference to select(2), those more interested can look for the patch from Chris Brown in the archives.

One final change that was semi-bug related, explicit tests were added for division by zero to all user-accessible integer division and modulo functions, to avoid problems on OS X (which fails to trap 0 divide at all) and Windows (which traps it in some bizarre nonstandard fashion). He also standardized on 'division by zero' as the one true spelling of this error message and added regression tests.

SQL enthusiasts can rejoice, as SQL92-compatible FIRST, LAST, ABSOLUTE n, RELATIVE n options for FETCH and MOVE have been added into the back end. Another nice feature that has been added is PostgreSQL will now dump contents of the free space map into a cache file at database shutdown, and then load it again at database startup. This preserves the hard-won knowledge of free space across restarts (given an orderly shutdown). Those DBA's in the crowd will certainly cheer this addition.

We've also seen quite a bit done on the JDBC interface, including a massive cleanup and reorganization of the code. The cleanup included adding a private api layer (org.postgresql.core.Base*), cleaning up the public api (org.postgresql.PG*), adding consistent headers and copyright info, removed some deprecated functionality, and moving some files to more appropriate locations. Along with this 3 patches were committed; one from Paul Sorenson to correctly handle schema names in updateable result sets, one from Rich Cullingford to fix a NPE in the absolute() method of result set, and one from Tarjei Skorgenes to fix a NPE when logging is enabled.

== PostgreSQL Product News ==

PostgreSQL Hierarchical Queries 0.3 http://gppl.terminal.ru/index.eng.html

tcap ether traffic accounting to Postgresql alpha1 release http://gborg.postgresql.org/project/tcap/news/newsfull.php?news_id=100

3D Array support added to PL/R http://gborg.postgresql.org/project/plr/news/newsfull.php?news_id=99

== PostgreSQL In the News ==

Waikato waste website a success http://www.idg.net.nz/pressroom.nsf/UNID/59DEA05DC7E87580CC256CE400835AF5!opendocument

A database query http://www.infoworld.com/article/03/03/07/10osource_1.html?s=tc

== Upcoming Events ==

PostgreSQL Seminar: Instanbul, Turkey: March 15 Devrim Gunduz will present a PostgreSQL seminar in the 1st Open Source Workshop, at Bilgi University http://open.bilgi.edu.tr/workshop/workshop.html

Novell BrainShare: Salt Lake City, Utah: April 13-18 A PostgreSQL session including install, configure, administration, and interfacing with PHP http://www.novell.com/brainshare

Open Source Conference: Portland, Oregon: July 7-11 A PostgreSQL track will be available at this years conference. http://conferences.oreillynet.com/os2003

== PostgreSQL Weekly News - March 12th 2003 ==

Don't forget to read Elein Mustain's Weekly Summary of the PostgreSQL General Mailing List http://www.varlena.com/GeneralBits/

On the Web: http://www.postgresql.org

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