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f5e83662d0
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Tom Lane f5e83662d0 Modify planner's implied-equality-deduction code so that when a set 
of known-equal expressions includes any constant expressions (including
Params from outer queries), we actively suppress any 'var = var'
clauses that are or could be deduced from the set, generating only the
deducible 'var = const' clauses instead.  The idea here is to push down
the restrictions implied by the equality set to base relations whenever
possible.  Once we have applied the 'var = const' clauses, the 'var = var'
clauses are redundant, and should be suppressed both to save work at
execution and to avoid double-counting restrictivity.
2003-01-24 03:58:44 +00:00
config Remove leftovers from subproject removals. Fixes for Python and Kerberos 2002-09-04 22:54:18 +00:00
contrib This patch fixes an incorrect statement and makes a few cleanups to 2003-01-15 16:45:17 +00:00
doc Grant options, and cascading revoke. Grant options are allowed only for 2003-01-23 23:39:07 +00:00
src Modify planner's implied-equality-deduction code so that when a set 2003-01-24 03:58:44 +00:00
aclocal.m4 Remove leftovers from subproject removals. Fixes for Python and Kerberos 2002-09-04 22:54:18 +00:00
configure A tiny patch to fix a typo in configure.in and another one in 2003-01-11 04:58:44 +00:00
configure.in A tiny patch to fix a typo in configure.in and another one in 2003-01-11 04:58:44 +00:00
COPYRIGHT Update copyright to 2002. 2002-06-20 20:29:54 +00:00
GNUmakefile.in First step to removing /contrib/retep, with Peter Mount's approval. 2002-10-21 00:12:46 +00:00
HISTORY Fix capitalization. 2003-01-11 21:02:49 +00:00
INSTALL Regenerate 2002-11-21 23:33:22 +00:00
Makefile Restructure the key include files per recent pghackers discussion: there 2001-02-10 02:31:31 +00:00
README Improve wording. 2002-11-11 20:03:40 +00:00
register.txt Stamp for 7.3 beta3. 2002-10-24 03:03:37 +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 several language
bindings, including C, Perl, Python, and Tcl, as well as a JDBC
driver.

The ODBC and C++ interfaces have been moved to the PostgreSQL Projects
Web Site at http://gborg.postgresql.org for separate maintenance.

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
ftp://ftp.postgresql.org/pub/.  For more information look at our web
site located at http://www.postgresql.org/.