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Tom Lane e1e60694b4 Make CREATE AGGREGATE complain if the initcond is invalid for the datatype. 
The initial transition value is stored as a text string and not fed to the
transition type's input function until runtime (so that values such as
"now" don't get frozen at creation time).  Previously, CREATE AGGREGATE
didn't do anything with it but that, which meant that even erroneous values
would be accepted and not complained of until the aggregate is used.  This
seems unhelpful, and it's confused at least one user, as in Rhys Stewart's
recent report.  It seems worth taking a few more cycles to invoke the input
function and verify that the value is acceptable.  We can't do this if the
transition type is polymorphic, but in normal aggregates we know the actual
transition type so we can call the right input function.
2012-10-04 17:54:53 -04:00
config Add infrastructure for compile-time assertions about variable types. 2012-09-30 14:38:31 -04:00
contrib Add --sampling-rate option to pgbench. 2012-10-03 15:37:42 +03:00
doc Fix permissions explanations in CREATE DATABASE and CREATE SCHEMA docs. 2012-10-04 13:41:01 -04:00
src Make CREATE AGGREGATE complain if the initcond is invalid for the datatype. 2012-10-04 17:54:53 -04:00
.gitignore Add gitignore for mingw/cygwin build outputs 2011-06-09 18:11:47 +02:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Add infrastructure for compile-time assertions about variable types. 2012-09-30 14:38:31 -04:00
configure.in Add infrastructure for compile-time assertions about variable types. 2012-09-30 14:38:31 -04:00
COPYRIGHT Update copyright notices for year 2012. 2012-01-01 18:01:58 -05:00
GNUmakefile.in Make init-po and update-po recursive make targets 2012-06-29 14:01:54 +03:00
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

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/.