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Tom Lane c5dd8ead40 More fixes for lossy-GiST-distance-functions patch. Paul Ramsey reported that commit `35fcb1b3d0` induced a core dump on commuted ORDER BY expressions, because it was assuming that the indexorderby expression could be found verbatim in the relevant equivalence class, but it wasn't there. We really don't need anything that complicated anyway; for the data types likely to be used for index ORDER BY operators in the foreseeable future, the exprType() of the ORDER BY expression will serve fine. (The case where we'd have to work harder is where the ORDER BY expression's result is only binary-compatible with the declared input type of the ordering operator; long before worrying about that, one would need to get rid of GiST's hard-wired assumption that said datatype is float8.) Aside from fixing that crash and adding a regression test for the case, I did some desultory code review: nodeIndexscan.c was likewise overthinking how hard it ought to work to identify the datatype of the ORDER BY expressions. Add comments explaining how come nodeIndexscan.c can get away with simplifying assumptions about NULLS LAST ordering and no backward scan. Revert no-longer-needed changes of find_ec_member_for_tle(); while the new definition was no worse than the old, it wasn't better either, and it might cause back-patching pain. Revert entirely bogus additions to genam.h.		2015-05-21 19:47:48 -04:00
config	fix escaping of brackets for m4 broken in `b6b2149e48`	2015-05-03 09:37:15 -04:00
contrib	Collection of typo fixes.	2015-05-20 16:56:22 +03:00
doc	Correct two mistakes in the ALTER FOREIGN TABLE reference page.	2015-05-21 11:16:33 -04:00
src	More fixes for lossy-GiST-distance-functions patch.	2015-05-21 19:47:48 -04:00
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configure	fix escaping of brackets for m4 broken in `b6b2149e48`	2015-05-03 09:37:15 -04:00
configure.in
COPYRIGHT
GNUmakefile.in	Fix distclean/maintainer-clean targets to remove top-level tmp_install dir.	2015-05-13 18:48:05 -04:00
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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/.