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Tom Lane e3bfe6d84d Rethink function argument sorting in pg_dump. Commit `7b583b20b1` created an unnecessary dump failure hazard by applying pg_get_function_identity_arguments() to every function in the database, even those that won't get dumped. This could result in snapshot-related problems if concurrent sessions are, for example, creating and dropping temporary functions, as noted by Marko Tiikkaja in bug #12832. While this is by no means pg_dump's only such issue with concurrent DDL, it's unfortunate that we added a new failure mode for cases that used to work, and even more so that the failure was created for basically cosmetic reasons (ie, to sort overloaded functions more deterministically). To fix, revert that patch and instead sort function arguments using information that pg_dump has available anyway, namely the names of the argument types. This will produce a slightly different sort ordering for overloaded functions than the previous coding; but applying strcmp directly to the output of pg_get_function_identity_arguments really was a bit odd anyway. The sorting will still be name-based and hence independent of possibly-installation-specific OID assignments. A small additional benefit is that sorting now works regardless of server version. Back-patch to 9.3, where the previous commit appeared.		2015-03-06 13:27:46 -05:00
config	Speed up CRC calculation using slicing-by-8 algorithm.	2015-02-10 10:54:40 +02:00
contrib	Fix contrib/file_fdw's expected file	2015-03-06 11:47:09 -03:00
doc	Use standard casting mechanism to convert types in plpgsql, when possible.	2015-03-04 11:04:30 -05:00
src	Rethink function argument sorting in pg_dump.	2015-03-06 13:27:46 -05:00
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configure.in	Speed up CRC calculation using slicing-by-8 algorithm.	2015-02-10 10:54:40 +02:00
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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.  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/.