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Tom Lane 368df30427 Support hashing for duplicate-elimination in INTERSECT and EXCEPT queries. 
This completes my project of improving usage of hashing for duplicate
elimination (aggregate functions with DISTINCT remain undone, but that's
for some other day).

As with the previous patches, this means we can INTERSECT/EXCEPT on datatypes
that can hash but not sort, and it means that INTERSECT/EXCEPT without ORDER
BY are no longer certain to produce sorted output.
 		2008-08-07 03:04:04 +00:00
config Cope with Tcl versions that do not create a tclsh symlink to the version- 2008-08-01 13:50:52 +00:00
contrib Allow I/O conversion casts to be applied to or from any type that is a member 2008-07-30 21:23:17 +00:00
doc Move pgstat.tmp into a temporary directory under $PGDATA named pg_stat_tmp. 2008-08-05 12:09:30 +00:00
src Support hashing for duplicate-elimination in INTERSECT and EXCEPT queries. 2008-08-07 03:04:04 +00:00
COPYRIGHT Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
GNUmakefile.in Catch all errors in for and while loops in makefiles. Don't ignore any 2008-03-18 16:24:50 +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 Some further editorializing on README.CVS. 2004-03-28 06:09:08 +00:00
aclocal.m4 Add new auto-detection of thread flags. 2004-04-23 18:15:55 +00:00
configure Cope with Tcl versions that do not create a tclsh symlink to the version- 2008-08-01 13:50:52 +00:00
configure.in Modify the recently-added probe for -Wl,--as-needed some more, because RHEL-4 2008-06-27 00:36:16 +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/.