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Tom Lane ea166f1146 Planner speedup hacking. Avoid saving useless pathkeys, so that path 
comparison does not consider paths different when they differ only in
uninteresting aspects of sort order.  (We had a special case of this
consideration for indexscans already, but generalize it to apply to
ordered join paths too.)  Be stricter about what is a canonical pathkey
to allow faster pathkey comparison.  Cache canonical pathkeys and
dispersion stats for left and right sides of a RestrictInfo's clause,
to avoid repeated computation.  Total speedup will depend on number of
tables in a query, but I see about 4x speedup of planning phase for
a sample seven-table query.
 		2000-12-14 22:30:45 +00:00
config Also test for 'void *' as third arg of accept() (as on Solaris 7 and 8), 2000-11-09 18:18:42 +00:00
contrib Links to CUBE, SEG contrib items 2000-12-11 20:40:59 +00:00
doc Update TODO list. 2000-12-13 04:02:15 +00:00
src Planner speedup hacking. Avoid saving useless pathkeys, so that path 2000-12-14 22:30:45 +00:00
COPYRIGHT Update copyright file. 2000-01-29 08:53:10 +00:00
GNUmakefile.in Seems like make clean or make distclean should clean out contrib 2000-12-04 00:34:40 +00:00
HISTORY Add new 7.0.3 item to all places. 2000-11-12 14:26:48 +00:00
INSTALL Minor tweaks in installation instructions, regenerate INSTALL file. 2000-11-30 21:44:07 +00:00
Makefile Fix GNU make detection. 2000-11-06 18:18:22 +00:00
README Brand 7.1 release. Also update jdbc version in release branch. 2000-06-12 22:36:19 +00:00
aclocal.m4 Add some configure checks for DocBook and related tools. With a somewhat 2000-11-05 21:04:07 +00:00
configure update VERSION to 7.1beta1.. 2000-12-06 20:26:53 +00:00
configure.in update VERSION to 7.1beta1.. 2000-12-06 20:26:53 +00:00
register.txt update website references 2000-10-17 10:33:21 +00:00

README 

 
PostgreSQL Data Base Management System (formerly known as Postgres, then
as Postgres95).
  
This directory contains the development version of 7.1 of the
PostgreSQL database server.  The server is not ANSI SQL compliant, but
it gets closer with every release.  After you unzip and untar the
distribution file, look at file INSTALL for the installation notes and
file HISTORY for the changes.

The latest version of this software may be obtained at
ftp://ftp.postgresql.org/pub/.  For more information look at our WWW
home page located at http://www.postgreSQL.org/.

PostgreSQL is not public domain software.  It is copyrighted by the
University of California but may be used according to the licensing
terms of the the copyright below:

------------------------------------------------------------------------

POSTGRES95 Data Base Management System (formerly known as Postgres, then
as Postgres95).

Copyright (c) 1994-7 Regents of the University of California

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
paragraph and the following two paragraphs appear in all copies.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.