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835bb975d8
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Tom Lane 835bb975d8 Restructure building of join relation targetlists so that a join plan 
node emits only those vars that are actually needed above it in the
plan tree.  (There were comments in the code suggesting that this was
done at some point in the dim past, but for a long time we have just
made join nodes emit everything that either input emitted.)  Aside from
being marginally more efficient, this fixes the problem noted by Peter
Eisentraut where a join above an IN-implemented-as-join might fail,
because the subplan targetlist constructed in the latter case didn't
meet the expectation of including everything.
Along the way, fix some places that were O(N^2) in the targetlist
length.  This is not all the trouble spots for wide queries by any
means, but it's a step forward.
2003-06-29 23:05:05 +00:00
config Remove references to sa_family_t, except when SOCKADDR_STORAGE requires 2003-06-23 23:52:00 +00:00
contrib Group ISBN/ISSN definitions. 2003-06-28 00:36:40 +00:00
doc Information schema views for group privileges, some corrections on column 2003-06-29 15:14:41 +00:00
src Restructure building of join relation targetlists so that a join plan 2003-06-29 23:05:05 +00:00
aclocal.m4
configure Remove references to sa_family_t, except when SOCKADDR_STORAGE requires 2003-06-23 23:52:00 +00:00
configure.in Remove references to sa_family_t, except when SOCKADDR_STORAGE requires 2003-06-23 23:52:00 +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 misstatement in release-notes item. 2003-05-26 18:58:26 +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 Update URL to point to proper location. 2003-06-02 15:01:03 +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/.