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07daff63c5
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Tom Lane 07daff63c5 Fix select_common_type() so that it can select a domain type, if all inputs 
to a UNION, CASE, or related construct are of the same domain type.  The
main part of this routine smashes domains to their base types, which seems
necessary because the logic involves TypeCategory() and IsPreferredType(),
neither of which work usefully on domains.  However, we can add a first
pass that just detects whether all the inputs are exactly the same type,
and if so accept that without question (so long as it's not UNKNOWN).
Per recent gripe from Dean Rasheed.

In passing, remove some tests for InvalidOid, which have clearly been dead
code for quite some time now, because getBaseType() would fail on that input.

Also, clarify the manual's not-very-precise description of the existing
algorithm's behavior.
2007-11-26 16:46:51 +00:00
config Update config.guess and config.sub 2007-11-15 20:21:05 +00:00
contrib Adjust contrib/tsearch2 regression results to use XML tag and XML entity descriptions, as now used by core text search default parser. 2007-11-20 04:23:10 +00:00
doc Fix select_common_type() so that it can select a domain type, if all inputs 2007-11-26 16:46:51 +00:00
src Fix select_common_type() so that it can select a domain type, if all inputs 2007-11-26 16:46:51 +00:00
aclocal.m4
configure Re-do configure with autoconf 2.59 2007-11-16 04:59:25 +00:00
configure.in Require a specific Autoconf version, instead of a lower bound only. 2007-11-26 12:31:07 +00:00
COPYRIGHT
GNUmakefile.in Replace useless uses of := by = in makefiles. 2007-02-09 15:56:00 +00:00
Makefile
README Clean up some now-obsolete references to GBorg. 2007-11-14 01:58:18 +00:00
README.CVS

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 including some of the more
common listed below:

C++ - http://thaiopensource.org/development/libpqxx/
JDBC - http://jdbc.postgresql.org
ODBC - http://odbc.postgresql.org
Perl - http://search.cpan.org/~dbdpg/
PHP - http://www.php.net
Python - http://www.initd.org/
Ruby - http://ruby.scripting.ca/postgres/

Other language binding are available from a variety of contributing
parties.

PostgreSQL also has a great number of procedural languages available,
a short, incomplete list is below:

PL/pgSQL - included in PostgreSQL source distribution
PL/Perl - included in PostgreSQL source distribution
PL/PHP - http://projects.commandprompt.com/projects/public/plphp
PL/Python - included in PostgreSQL source distribution
PL/Java - http://pgfoundry.org/projects/pljava/
PL/Tcl - included in PostgreSQL source distribution

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/.