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Nathan Bossart b52adbad46 Ensure we have a snapshot when updating pg_index entries. 
Creating, reindexing, and dropping an index concurrently could
entail accessing pg_index's TOAST table, which was recently added
in commit b52c4fc3c0.  These code paths start and commit their own
transactions, but they do not always set an active snapshot.  This
rightfully leads to assertion failures and ERRORs when trying to
access pg_index's TOAST table, such as the following:

	ERROR:  cannot fetch toast data without an active snapshot

To fix, push an active snapshot just before each section of code
that might require accessing pg_index's TOAST table, and pop it
shortly afterwards.

Reported-by: Alexander Lakhin
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/a97d7401-e7c9-f771-6a00-037379f0a8bb%40gmail.com
2024-09-26 15:51:23 -05:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config jit: Remove {llvm-config,clang}-N configure probes. 2024-05-16 13:58:25 +12:00
contrib pg_stat_statements: Expand tests for SET statements 2024-09-25 10:04:44 +09:00
doc Modernize to_char's Roman-numeral code, fixing overflow problems. 2024-09-26 11:02:31 -04:00
src Ensure we have a snapshot when updating pg_index entries. 2024-09-26 15:51:23 -05:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml Add PG_TEST_PG_COMBINEBACKUP_MODE to CI tasks 2024-09-10 16:30:38 +02:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add commit 7229ebe011 to .git-blame-ignore-revs. 2024-09-14 20:17:30 +02:00
.gitattributes Remove non-existing file from .gitattributes 2024-02-16 11:39:09 +01:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove support for OpenSSL older than 1.1.0 2024-09-02 13:51:48 +02:00
configure.ac Remove support for OpenSSL older than 1.1.0 2024-09-02 13:51:48 +02:00
COPYRIGHT Update copyright for 2024 2024-01-03 20:49:05 -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 Remove AIX support 2024-02-28 15:17:23 +04:00
meson.build Improve meson's detection of perl build flags 2024-09-14 10:26:25 -04:00
meson_options.txt Remove spinlocks and atomics from meson_options.txt. 2024-07-30 23:37:14 +12:00
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/.