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Tom Lane a1453f121b Fix regexp substring matching (substring(string from pattern)) for the corner 
case where there is a match to the pattern overall but the user has specified
a parenthesized subexpression and that subexpression hasn't got a match.
An example is substring('foo' from 'foo(bar)?').  This should return NULL,
since (bar) isn't matched, but it was mistakenly returning the whole-pattern
match instead (ie, 'foo').  Per bug #4044 from Rui Martins.

This has been broken since the beginning; patch in all supported versions.
The old behavior was sufficiently inconsistent that it's impossible to believe
anyone is depending on it.
2008-03-19 02:41:15 +00:00
config Handle draft version of getpwuid_r() that accepts only four arguments. 2004-03-20 15:39:40 +00:00
contrib The original patch to disallow non-passworded connections to non-superusers 2008-01-03 21:28:55 +00:00
doc Fix an ancient oversight in libpq's handling of V3-protocol COPY OUT mode: 2008-01-14 18:46:49 +00:00
src Fix regexp substring matching (substring(string from pattern)) for the corner 2008-03-19 02:41:15 +00:00
aclocal.m4 Remove leftovers from subproject removals. Fixes for Python and Kerberos 2002-09-04 22:54:18 +00:00
configure Use our own getopt() and getopt_long() on Solaris, because that platform's 2008-02-24 05:22:44 +00:00
configure.in Use our own getopt() and getopt_long() on Solaris, because that platform's 2008-02-24 05:22:44 +00:00
COPYRIGHT Fix some copyright notices that weren't updated. Improve copyright tool 2003-08-04 23:59:41 +00:00
GNUmakefile.in Remove README.CVS when making a distribution. 2004-06-13 21:50:04 +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
README.CVS Some further editorializing on README.CVS. 2004-03-28 06:09:14 +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/.