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Tom Lane fdaf44862b Invent pre-commit/pre-prepare/pre-subcommit events for xact callbacks. 
Currently it's only possible for loadable modules to get control during
post-commit cleanup of a transaction.  That doesn't work too well if they
want to do something that could throw an error; for example, an FDW might
need to issue a remote commit, which could well fail.  To improve matters,
extend the existing APIs for XactCallback and SubXactCallback functions
to provide new pre-commit events for this purpose.

The release notes will need to mention that existing callback functions
should be checked to make sure they don't do something unwanted when one
of the new event types occurs.  In the examples within our source tree,
contrib/sepgsql was fine but plpgsql had been a bit too cute.
 		2013-02-14 20:35:08 -05:00
config Improve handling of ereport(ERROR) and elog(ERROR). 2013-01-13 18:40:09 -05:00
contrib pg_upgrade: conditionally create cluster delete script 2013-02-14 10:53:03 -05:00
doc doc: Add make target to produce EPUB from DocBook 2013-02-13 23:12:21 -05:00
src Invent pre-commit/pre-prepare/pre-subcommit events for xact callbacks. 2013-02-14 20:35:08 -05:00
.gitignore Gitignore vcxproj files. 2013-01-23 03:44:37 -05:00
COPYRIGHT Update copyrights for 2013 2013-01-01 17:15:01 -05:00
GNUmakefile.in Make init-po and update-po recursive make targets 2012-06-29 14:01:54 +03:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Improve handling of ereport(ERROR) and elog(ERROR). 2013-01-13 18:40:09 -05:00
configure.in Improve handling of ereport(ERROR) and elog(ERROR). 2013-01-13 18:40:09 -05:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Changes between all PostgreSQL releases are recorded in the
file HISTORY.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.