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Michael Paquier 9d3e094f12 Allow ALTER INDEX .. ATTACH PARTITION to validate a parent index 
This commit tweaks ALTER INDEX .. ATTACH PARTITION to attempt a
validation of a parent index in the case where an index is already
attached but the parent is not yet valid.  This occurs in cases where a
parent index was created invalid such as with CREATE INDEX ONLY, but was
left invalid after an invalid child index was attached (partitioned
indexes set indisvalid to false if at least one partition is
!indisvalid, indisvalid is true in a partitioned table iff all
partitions are indisvalid).  This could leave a partition tree in a
situation where a user could not bring the parent index back to valid
after fixing the child index, as there is no built-in mechanism to do
so.  This commit relies on the fact that repeated ATTACH PARTITION
commands on the same index silently succeed.

An invalid parent index is more than just a passive issue.  It causes
for example ON CONFLICT on a partitioned table if the invalid parent
index is used to enforce a unique constraint.

Some test cases are added to track some of problematic patterns, using a
set of partition trees with combinations of invalid indexes and ATTACH
PARTITION.

Reported-by: Mohamed Ali <moali.pg@gmail.com>
Author: Sami Imseih <sanmimseih@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Haibo Yan <tristan.yim@gmail.com>
Discussion: http://postgr.es/m/CAGnOmWqi1D9ycBgUeOGf6mOCd2Dcf=6sKhbf4sHLs5xAcKVCMQ@mail.gmail.com
Backpatch-through: 14
2026-04-22 10:32:10 +09:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Update config.guess and config.sub 2026-04-09 11:26:14 +02:00
contrib Stabilize btree_gist test against on-access VM setting 2026-04-21 17:32:45 -04:00
doc Fix a set of typos and grammar issues across the tree 2026-04-21 14:46:22 +09:00
src Allow ALTER INDEX .. ATTACH PARTITION to validate a parent index 2026-04-22 10:32:10 +09:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
.cirrus.tasks.yml Enable test_cplusplusext with MSVC 2026-04-01 07:48:47 +02:00
.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 a couple of commits to .git-blame-ignore-revs. 2026-04-08 13:41:22 -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 errdetail() with PID and UID about source of termination signal. 2026-04-07 10:22:33 -04:00
configure.ac Add errdetail() with PID and UID about source of termination signal. 2026-04-07 10:22:33 -04:00
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 Meson: Fix check_header() for readline and gssapi 2026-04-20 12:36:14 +09:00
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/.