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Tom Lane 9727c583fe Restructure CLUSTER/newstyle VACUUM FULL/ALTER TABLE support so that swapping 
of old and new toast tables can be done either at the logical level (by
swapping the heaps' reltoastrelid links) or at the physical level (by swapping
the relfilenodes of the toast tables and their indexes).  This is necessary
infrastructure for upcoming changes to support CLUSTER/VAC FULL on shared
system catalogs, where we cannot change reltoastrelid.  The physical swap
saves a few catalog updates too.

We unfortunately have to keep the logical-level swap logic because in some
cases we will be adding or deleting a toast table, so there's no possibility
of a physical swap.  However, that only happens as a consequence of schema
changes in the table, which we do not need to support for system catalogs,
so such cases aren't an obstacle for that.

In passing, refactor the cluster support functions a little bit to eliminate
unnecessarily-duplicated code; and fix the problem that while CLUSTER had
been taught to rename the final toast table at need, ALTER TABLE had not.
2010-02-04 00:09:14 +00:00
config Make configure check the version of Perl we're building with, and reject 2010-01-07 01:41:11 +00:00
contrib Check to ensure the number of primary key fields supplied does not 2010-02-03 23:01:11 +00:00
doc Mention "unquoted" identifiers are case-insensitive. 2010-02-03 22:48:55 +00:00
src Restructure CLUSTER/newstyle VACUUM FULL/ALTER TABLE support so that swapping 2010-02-04 00:09:14 +00:00
aclocal.m4 Add new auto-detection of thread flags. 2004-04-23 18:15:55 +00:00
configure Re-order configure tests to reflect the fact that the code generated for 2010-01-16 19:50:26 +00:00
configure.in Re-order configure tests to reflect the fact that the code generated for 2010-01-16 19:50:26 +00:00
COPYRIGHT Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
GNUmakefile.in Fix thinko in new installcheck-world target 2010-01-29 01:06:18 +00:00
Makefile Add new make targets "world", "install-world" and "installcheck-world" to build, install and check just about everything. 2010-01-28 23:59:52 +00:00
README Point to our download URL, rather than listing interface in the README 2008-05-06 22:02:12 +00:00
README.CVS Fix the makefiles to fail cleanly if Perl is needed but not present. This 2009-06-23 03:46:00 +00:00

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/.