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Tom Lane 49ed392cd8 While doing the final setrefs.c pass over a plan tree, try to match up 
non-Var sort/group expressions using ressortgroupref labels instead of
depending entirely on equal()-ity of the upper node's tlist expressions
to the lower node's.  This avoids emitting the wrong outputs in cases
where there are textually identical volatile sort/group expressions,
as for example
	select distinct random(),random() from generate_series(1,10);
Per report from Andrew Gierth.

Backpatch to 8.4.  Arguably this is wrong all the way back, but the only known
case where there's an observable problem is when using hash aggregation to
implement DISTINCT, which is new as of 8.4.  So for the moment I'll refrain
from backpatching further.
 		2009-11-16 18:04:40 +00:00
config In the configure check for the Python distutils module, use a less obscure 2009-10-14 21:59:15 +00:00
contrib Make unaccent's install/uninstall scripts look more like all the others. 2009-11-14 18:24:32 +00:00
doc Add control knobs for plpgsql's variable resolution behavior, and make the 2009-11-13 22:43:42 +00:00
src While doing the final setrefs.c pass over a plan tree, try to match up 2009-11-16 18:04:40 +00:00
COPYRIGHT Update copyright for 2009. 2009-01-01 17:24:05 +00:00
GNUmakefile.in Build bzip2 tarball in dist target as well 2009-11-03 21:28:10 +00:00
Makefile Remove remains of old depend target. 2007-01-20 17:16:17 +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
aclocal.m4 Add new auto-detection of thread flags. 2004-04-23 18:15:55 +00:00
configure In the configure check for the Python distutils module, use a less obscure 2009-10-14 21:59:15 +00:00
configure.in Support "samehost" and "samenet" specifications in pg_hba.conf, 2009-10-01 01:58:58 +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/.