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Tom Lane 1c72a8a37a Fix extremely nasty little bug observed when a sub-SELECT appears in WHERE in a place where it can be part of a nestloop inner indexqual. As the code stood, it put the same physical sub-Plan node into both indxqual and indxqualorig of the IndexScan plan node. That confused later processing in the optimizer (which expected that tracing the subPlan list would visit each subplan node exactly once), and would probably have blown up in the executor if the planner hadn't choked first. Fix by making the 'fixed' indexqual be a complete deep copy of the original indexqual, rather than trying to share nodes below the topmost operator node. This had further ramifications though, because we were making the aforesaid list of sub-Plan nodes during SS_process_sublinks which is run before construction of the 'fixed' indexqual, meaning that the copy of the sub-Plan didn't show up in that list. Fix by rearranging logic so that the sub-Plan list is built by the final set_plan_references pass, not in SS_process_sublinks. This may sound like a mess, but it's actually a good deal cleaner now than it was before, because we are no longer dependent on the assumption that planning will never make a copy of a sub-Plan node.		2000-04-04 01:21:48 +00:00
contrib	Hi,	2000-04-03 20:56:40 +00:00
doc	Copy-editing, mostly.	2000-04-02 22:59:40 +00:00
src	Fix extremely nasty little bug observed when a sub-SELECT appears in	2000-04-04 01:21:48 +00:00
COPYRIGHT	Update copyright file.	2000-01-29 08:53:10 +00:00
HISTORY	Update initdb flags.	2000-03-26 03:40:37 +00:00
INSTALL	Added bug reporting guidelines	2000-03-09 12:00:08 +00:00
README	update	1999-07-18 18:27:05 +00:00
register.txt	make sure that cvslog is workign right ... no changes but to remove a blank	2000-03-10 21:46:27 +00:00

README

 
PostgreSQL Data Base Management System (formerly known as Postgres, then
as Postgres95).
  
This directory contains the development version of 6.6 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.