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Tom Lane bdfbfde1b1 IN clauses appearing at top level of WHERE can now be handled as joins. 
There are two implementation techniques: the executor understands a new
JOIN_IN jointype, which emits at most one matching row per left-hand row,
or the result of the IN's sub-select can be fed through a DISTINCT filter
and then joined as an ordinary relation.
Along the way, some minor code cleanup in the optimizer; notably, break
out most of the jointree-rearrangement preprocessing in planner.c and
put it in a new file prep/prepjointree.c.
2003-01-20 18:55:07 +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 IN clauses appearing at top level of WHERE can now be handled as joins. 2003-01-20 18:55:07 +00:00
src IN clauses appearing at top level of WHERE can now be handled as joins. 2003-01-20 18:55:07 +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
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
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/.