Jeff Davis 1fd1bd8710 Transfer statistics during pg_upgrade. Add support to pg_dump for dumping stats, and use that during pg_upgrade so that statistics are transferred during upgrade. In most cases this removes the need for a costly re-analyze after upgrade. Some statistics are not transferred, such as extended statistics or statistics with a custom stakind. Now pg_dump accepts the options --schema-only, --no-schema, --data-only, --no-data, --statistics-only, and --no-statistics; which allow all combinations of schema, data, and/or stats. The options are named this way to preserve compatibility with the previous --schema-only and --data-only options. Statistics are in SECTION_DATA, unless the object itself is in SECTION_POST_DATA. The stats are represented as calls to pg_restore_relation_stats() and pg_restore_attribute_stats(). Author: Corey Huinker, Jeff Davis Reviewed-by: Jian He Discussion: https://postgr.es/m/CADkLM=fzX7QX6r78fShWDjNN3Vcr4PVAnvXxQ4DiGy6V=0bCUA@mail.gmail.com Discussion: https://postgr.es/m/CADkLM%3DcB0rF3p_FuWRTMSV0983ihTRpsH%2BOCpNyiqE7Wk0vUWA%40mail.gmail.com		10 months ago
.github	Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md.	1 year ago
config	Remove flex version checks	11 months ago
contrib	Don't lock partitions pruned by initial pruning	10 months ago
doc	Transfer statistics during pg_upgrade.	10 months ago
src	Transfer statistics during pg_upgrade.	10 months ago
.cirrus.star	Remove duplicate words in docs and code comments.	2 years ago
.cirrus.tasks.yml	ci: Collect core files on NetBSD and OpenBSD	10 months ago
.cirrus.yml	ci: Test NetBSD and OpenBSD	10 months ago
.dir-locals.el	Make Emacs perl-mode indent more like perltidy.	7 years ago
.editorconfig	Add script to keep .editorconfig in sync with .gitattributes	11 months ago
.git-blame-ignore-revs	Add commit `76aa615943` to .git-blame-ignore-revs	11 months ago
.gitattributes	Add script to keep .editorconfig in sync with .gitattributes	11 months ago
.gitignore	Update top-level .gitignore.	3 years ago
.mailmap	Add a Git .mailmap file	1 year ago
COPYRIGHT	Update copyright for 2025	12 months ago
GNUmakefile.in	Allow selecting the git revision to be packaged by "make dist".	2 years ago
HISTORY	Canonicalize some URLs	6 years ago
Makefile	Remove AIX support	2 years ago
README.md	Revise the style of a paragraph in README.md.	2 years ago
aclocal.m4	autoconf: Move export_dynamic determination to configure	3 years ago
configure	Remove support for linking with libeay32 and ssleay32	10 months ago
configure.ac	Remove support for linking with libeay32 and ssleay32	10 months ago
meson.build	meson: Fix failure to detect bsd_auth.h presence	10 months ago
meson_options.txt	Update copyright for 2025	12 months ago

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.

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/.