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Michael Paquier 72e3abd082 pg_stat_statements: Fix test instability with cache-clobbering builds 
Builds with CLOBBER_CACHE_ALWAYS enabled are failing the new test
introduced in 1572ea96e6, checking the nesting level calculation in
the planner hook.  The inner query of the function called twice is
registered as normalized, as such builds would register a PGSS entry in
the post-parse-analyse hook due to the cached plans requiring
revalidation.

A trick based on debug_discard_caches cannot work as far as I can, a
normalized query still being registered.  This commit takes a different
approach with the addition of a DISCARD PLANS before the first function
call.  This forces the use of a normalized query in the PGSS entry for
the inner query of the function with and without CLOBBER_CACHE_ALWAYS,
which should be enough to stabilize the test.  Note that the test is
still checking what it should: when removing the nesting level
calculation in the planner hook of PGSS, one still gets a failure for
the PGSS entry of the inner query in the function, with "toplevel" being
flipped to true instead of false (it should be false, as a non-top-level
entry).

Per buildfarm members avocet and trilobite, at least.

Reported-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: https://postgr.es/m/82dd02bb-4e0f-40ad-a60b-baa1763ff0bd@gmail.com
2026-01-25 19:01:23 +09:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Update copyright for 2026 2026-01-01 13:24:10 -05:00
contrib pg_stat_statements: Fix test instability with cache-clobbering builds 2026-01-25 19:01:23 +09:00
doc Add WALRCV_CONNECTING state to the WAL receiver 2026-01-23 14:17:28 +09:00
src Fix trigger transition table capture for MERGE in CTE queries. 2026-01-24 11:30:48 +00:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
.cirrus.tasks.yml ci: Configure g++ with 32-bit for 32-bit build 2026-01-09 08:58:50 +01:00
.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 commit 86b276a4a9 to .git-blame-ignore-revs. 2025-12-05 14:21:12 -06:00
.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 Detect if flags are needed for C++11 support 2026-01-22 09:09:25 +01:00
configure.ac Detect if flags are needed for C++11 support 2026-01-22 09:09:25 +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 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 Detect if flags are needed for C++11 support 2026-01-22 09:09:25 +01:00
meson_options.txt Update copyright for 2026 2026-01-01 13:24:10 -05:00
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/.