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Tom Lane 0d9819f7e3 Measure epoch of timestamp-without-time-zone from local not UTC midnight. 
This patch reverts commit 191ef2b407
and thereby restores the pre-7.3 behavior of EXTRACT(EPOCH FROM
timestamp-without-tz).  Per discussion, the more recent behavior was
misguided on a couple of grounds: it makes it hard to get a
non-timezone-aware epoch value for a timestamp, and it makes this one
case dependent on the value of the timezone GUC, which is incompatible
with having timestamp_part() labeled as immutable.

The other behavior is still available (in all releases) by explicitly
casting the timestamp to timestamp with time zone before applying EXTRACT.

This will need to be called out as an incompatible change in the 9.2
release notes.  Although having mutable behavior in a function marked
immutable is clearly a bug, we're not going to back-patch such a change.
 		2012-04-10 12:04:42 -04:00
config Fix configure's search for collateindex.pl. 2012-03-22 00:46:03 -04:00
contrib Save a few cycles while creating "sticky" entries in pg_stat_statements. 2012-04-09 11:16:04 -04:00
doc Measure epoch of timestamp-without-time-zone from local not UTC midnight. 2012-04-10 12:04:42 -04:00
src Measure epoch of timestamp-without-time-zone from local not UTC midnight. 2012-04-10 12:04:42 -04:00
.gitignore Add gitignore for mingw/cygwin build outputs 2011-06-09 18:11:47 +02:00
COPYRIGHT Update copyright notices for year 2012. 2012-01-01 18:01:58 -05:00
GNUmakefile.in Add isolation test to check-world and installcheck-world 2012-03-05 20:19:20 +02:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Fix configure's search for collateindex.pl. 2012-03-22 00:46:03 -04:00
configure.in Allow MinGW builds to use standardly-named OpenSSL libraries. 2012-02-23 15:05:08 -05:00

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/.