postgres

Go to file

Tom Lane f6dba10e62 First phase of implementing hash-based grouping/aggregation. An AGG plan node now does its own grouping of the input rows, and has no need for a preceding GROUP node in the plan pipeline. This allows elimination of the misnamed tuplePerGroup option for GROUP, and actually saves more code in nodeGroup.c than it costs in nodeAgg.c, as well as being presumably faster. Restructure the API of query_planner so that we do not commit to using a sorted or unsorted plan in query_planner; instead grouping_planner makes the decision. (Right now it isn't any smarter than query_planner was, but that will change as soon as it has the option to select a hash- based aggregation step.) Despite all the hackery, no initdb needed since only in-memory node types changed.		2002-11-06 00:00:45 +00:00
config	Remove leftovers from subproject removals. Fixes for Python and Kerberos	2002-09-04 22:54:18 +00:00
contrib	Remove extraneous semicolons after routine bodies. These don't bother	2002-11-04 17:14:29 +00:00
doc	Add OS/X kernel tuning section.	2002-11-05 23:16:56 +00:00
src	First phase of implementing hash-based grouping/aggregation. An AGG plan	2002-11-06 00:00:45 +00:00
aclocal.m4	Remove leftovers from subproject removals. Fixes for Python and Kerberos	2002-09-04 22:54:18 +00:00
configure	Brand CVS tip as 7.4devel.	2002-11-04 21:36:13 +00:00
configure.in	Brand CVS tip as 7.4devel.	2002-11-04 21:36:13 +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	Stamp for 7.3 beta3.	2002-10-24 03:03:37 +00:00
INSTALL	Specify that we need bison >= 1.50.	2002-10-22 13:46:59 +00:00
Makefile	Restructure the key include files per recent pghackers discussion: there	2001-02-10 02:31:31 +00:00
README	Remove all traces of the ODBC driver, which is now on GBorg as the psqlodbc	2002-08-22 22:43:14 +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 drivers
for JDBC.

As of v7.3, the ODBC and C++ interfaces have been moved over to the
PostgreSQL Projects WebSite @ http://gborg.postgresql.org.

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/.