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Tom Lane fb7a9050d5 Doc: improve explanation of GiST compress/decompress methods. 
The docs previously didn't explain that leaf and non-leaf keys
could be treated differently, even though many of our opclasses
do exactly that.  It also wasn't explained how that relates to
the STORAGE option, particularly since only one storage type
can be specified for both leaf and non-leaf keys.

While here, reorganize the text slightly, rather than sticking
additional detail into what's supposed to be a brief summary
paragraph.

Author: Paul A Jungwirth <pj@illuminatedcomputing.com>
Co-authored-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CA+renyWs5Np+FLSYfL+eu20S4U671A3fQGb-+7e22HLrD1NbYw@mail.gmail.com
2026-03-31 11:23:26 -04:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Hardcode override of typeof_unqual for clang-for-bitcode 2026-03-16 19:24:49 +01:00
contrib Remove bits* typedefs. 2026-03-30 16:12:08 -05:00
doc Doc: improve explanation of GiST compress/decompress methods. 2026-03-31 11:23:26 -04:00
src Doc: improve explanation of GiST compress/decompress methods. 2026-03-31 11:23:26 -04:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
.cirrus.tasks.yml ci: Run headerscheck and cpluspluscheck in parallel 2026-03-23 08:40:29 +01:00
.cirrus.yml ci: Per-repo configuration for manually trigger tasks 2025-08-14 11:54:03 -04:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.git-blame-ignore-revs Add commit 874da8b1f6 to .git-blame-ignore-revs. 2026-03-30 14:35:24 -05:00
.gitattributes Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
.mailmap Add a Git .mailmap file 2024-11-05 13:56:02 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Add warning option -Wold-style-declaration 2026-03-30 23:34:13 +02:00
configure.ac Add warning option -Wold-style-declaration 2026-03-30 23:34:13 +02:00
COPYRIGHT Update copyright for 2026 2026-01-01 13:24:10 -05:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Restore AIX support. 2026-02-23 13:34:22 -05:00
meson.build Disable some C++ warnings in MSVC 2026-03-31 08:42:26 +02:00
meson_options.txt Update copyright for 2026 2026-01-01 13:24:10 -05:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.