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Álvaro Herrera 936ab6de95
Fix some more bugs in foreign keys connecting partitioned tables 
* In DetachPartitionFinalize() we were applying a tuple conversion map
  to tuples that didn't need one, which can lead to erratic behavior if
  a partitioned table has a partition with a different column order, as
  reported by Alexander Lakhin. This was introduced by 53af9491a0.
  Don't do that.  Also, modify a recently added test case to exercise
  this.

* The same function as well as CloneFkReferenced() were acquiring
  AccessShareLock on a partition, only to have CreateTrigger() later
  acquire ShareRowExclusiveLock on it.  This can lead to deadlock by
  lock escalation, unnecessarily.  Avoid that by acquiring the stronger
  lock to begin with.  This probably dates back to branch 12, but I have
  never seen a report of this being a problem in the field.

* Innocuous but wasteful: also introduced by 53af9491a0, we were
  reading a pg_constraint tuple from syscache that we don't need, as
  reported by Tender Wang.  Don't.

Backpatch to 15.

Discussion: https://postgr.es/m/461e9c26-2076-8224-e119-84998b6a784e@gmail.com
2024-10-30 10:54:03 +01:00
config jit: Remove {llvm-config,clang}-N configure probes. 2024-05-16 13:58:25 +12:00
contrib Stabilize the test added by commit 022564f60c. 2024-10-08 12:13:28 +05:30
doc doc: Add better description for rewrite functions in event triggers 2024-10-29 15:35:14 +09:00
src Fix some more bugs in foreign keys connecting partitioned tables 2024-10-30 10:54:03 +01:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml ci: Pin MacPorts version to 2.9.3. 2024-07-25 14:48:18 +12:00
.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 Stamp 17.0. 2024-09-23 16:02:53 -04:00
configure.ac Stamp 17.0. 2024-09-23 16:02:53 -04:00
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 Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00
meson.build Stamp 17.0. 2024-09-23 16:02:53 -04:00
meson_options.txt Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
README.md Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00

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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.