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Tom Lane 5a86e5e193 Make CREATE INDEX run expression preprocessing on a proposed index expression 
before it checks whether the expression is immutable.  This covers two cases
that were previously handled poorly:

1. SQL function inlining could reduce the apparent volatility of the
expression, allowing an expression to be accepted where it previously would
not have been.  As an example, polymorphic functions must be marked with the
worst-case volatility they have for any argument type, but for specific
argument types they might not be so volatile, so indexing could be allowed.
(Since the planner will refuse to inline functions in cases where the
apparent volatility of the expression would increase, this won't break
any cases that were accepted before.)

2. A nominally immutable function could have default arguments that are
volatile expressions.  In such a case insertion of the defaults will increase
both the apparent and actual volatility of the expression, so it is
*necessary* to check this before allowing the expression to be indexed.

Back-patch to 8.4, where default arguments were introduced.
 		2010-05-27 15:59:10 +00:00
config Replace self written 'long long int' configure test by standard 'AC_TYPE_LONG_LONG_INT' macro call. 2010-05-25 17:28:20 +00:00
contrib Remove IMPLEMENTATION.jp file from pg_upgrade docs; still in pgFoundry 2010-05-25 16:53:24 +00:00
doc Make it more clear that you need to release savepoint with 2010-05-27 06:25:32 +00:00
src Make CREATE INDEX run expression preprocessing on a proposed index expression 2010-05-27 15:59:10 +00:00
COPYRIGHT Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
GNUmakefile.in Separate targets "make docs" and "make install-docs" for the documentation 2010-03-30 00:10:46 +00:00
Makefile Add new make targets "world", "install-world" and "installcheck-world" to build, install and check just about everything. 2010-01-28 23:59:52 +00:00
README Point to our download URL, rather than listing interface in the README 2008-05-06 22:02:12 +00:00
README.CVS Fix the makefiles to fail cleanly if Perl is needed but not present. This 2009-06-23 03:46:00 +00:00
aclocal.m4 Add new auto-detection of thread flags. 2004-04-23 18:15:55 +00:00
configure Replace self written 'long long int' configure test by standard 'AC_TYPE_LONG_LONG_INT' macro call. 2010-05-25 17:28:20 +00:00
configure.in Replace self written 'long long int' configure test by standard 'AC_TYPE_LONG_LONG_INT' macro call. 2010-05-25 17:28:20 +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 C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

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