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Tom Lane de1d042f59 Support index-only scans in contrib/cube and contrib/seg GiST indexes. To do this, we only have to remove the compress and decompress support functions, which have never done anything more than detoasting. In the wake of commit `d3a4f89d8`, this results in automatically enabling index-only scans, since the core code will now know that the stored representation is the same as the original data (up to detoasting). The only exciting part of this is that ALTER OPERATOR FAMILY lacks a way to drop a support function that was declared as being part of an opclass rather than being loose in the family. For the moment, we'll hack our way to a solution with a manual update of the pg_depend entry type, which is what distinguishes the two cases. Perhaps someday it'll be worth providing a cleaner way to do that, but for now it seems like a very niche problem. Note that the underlying C functions remain, to support use of the shared libraries with older versions of the modules' SQL declarations. Someday we may be able to remove them, but not soon. Andrey Borodin, reviewed by me Discussion: https://postgr.es/m/D0F53A05-4F4A-4DEC-8339-3C069FA0EE11@yandex-team.ru		2017-11-20 20:25:18 -05:00
config	Prevent int128 from requiring more than MAXALIGN alignment.	2017-11-14 15:03:55 -05:00
contrib	Support index-only scans in contrib/cube and contrib/seg GiST indexes.	2017-11-20 20:25:18 -05:00
doc	Parameter toast_tuple_target controls TOAST for new rows	2017-11-20 09:50:10 +11:00
src	Use out-of-line M68K spinlock code for OpenBSD as well as NetBSD.	2017-11-20 18:05:17 -05:00
.dir-locals.el
.gitattributes	Remove contrib/tsearch2.	2017-02-13 11:06:11 -05:00
.gitignore	Add lcov --initial	2017-09-29 08:54:34 -04:00
aclocal.m4	Make configure check for IPC::Run when --enable-tap-tests is specified.	2017-06-15 15:56:12 -04:00
configure	Prevent int128 from requiring more than MAXALIGN alignment.	2017-11-14 15:03:55 -05:00
configure.in	Prevent int128 from requiring more than MAXALIGN alignment.	2017-11-14 15:03:55 -05:00
COPYRIGHT	Update copyright for 2017	2017-01-03 12:37:53 -05:00
GNUmakefile.in	Have "make coverage" recurse into contrib as well	2016-09-05 18:44:36 -03:00
HISTORY	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00
Makefile	Prevent passing down MAKELEVEL/MAKEFLAGS from non-GNU make to GNU make.	2017-08-09 12:05:53 -04:00
README	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00
README.git	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -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:

	https://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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.