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Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch https://www.postgresql.org/
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Filename Latest commit message Latest commit date
Melanie Plageman 206e71935e Exclude new pages from VACUUM reltuples estimates 
VACUUM always scans PageIsNew blocks because they have no visibility map
bits. They could already distort reltuples estimates when all-visible
pages were skipped by successive VACUUMs. However, on-access VM setting
(b46e1e54d) makes this more likely by making it possible that some
all-visible pages will never be scanned by vacuum.

Exclude PageIsNew blocks from the sampled pages and sampleable
population that is used to extrapolate reltuples for the unscanned
pages.

Reported-by: Vaibhav Jain <jainva@google.com>
Co-authored-by: Vaibhav Jain <jainva@google.com>
Co-authored-by: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/flat/CABa-Az2YXuX%2B_JH8VL89i7oA%2BDC74GvfkSsM9%2B92fGCeWYVCqg%40mail.gmail.com
Backpatch-through: 19
2026-11-13 16:50:59 -05:00
.github ci: Move to per-job naming for containers 2026-11-06 18:58:41 -05:00
config Revert "Use -isystem for LLVM include directories" 2026-09-12 15:50:08 +02:00
contrib Exclude new pages from VACUUM reltuples estimates 2026-11-13 16:50:59 -05:00
doc doc: Fix link to TCL project 2026-11-13 10:50:10 +01:00
src Exclude new pages from VACUUM reltuples estimates 2026-11-13 16:50:59 -05:00
.dir-locals.el
.editorconfig Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.git-blame-ignore-revs Add a few recent commits to .git-blame-ignore-revs. 2026-10-30 13:10:23 -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 compiler option -fstrict-flex-arrays=1 2026-11-04 09:53:16 +01:00
configure.ac Add compiler option -fstrict-flex-arrays=1 2026-11-04 09:53:16 +01:00
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
Makefile Restore AIX support. 2026-02-23 13:34:22 -05:00
meson.build Add compiler option -fstrict-flex-arrays=1 2026-11-04 09:53:16 +01:00
meson_options.txt Revert "Add built-in fuzzing harnesses for security testing." 2026-04-10 09:53:58 -04:00
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/.