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Michael Paquier 45e0ba30fc pg_stat_statements: Add tests for nested queries with level tracking 
There have never been any regression tests in PGSS for various query
patterns for nested queries combined with level tracking, like:
- Multi-statements.
- CREATE TABLE AS
- CREATE/REFRESH MATERIALIZED VIEW
- DECLARE CURSOR
- EXPLAIN, with a subset of the above supported.
- COPY.

All the tests added here track historical, sometimes confusing, existing
behaviors.  For example, EXPLAIN stores two PGSS entries with the same
top-level query string but two different query IDs as one is calculated
for the top-level EXPLAIN (this part is right) and a second one for the
inner query in the EXPLAIN (this part is not right).

A couple of patches are under discussion to improve the situation, and
all the tests added here will prove useful to evaluate the changes
discussed.

Author: Anthonin Bonnefoy
Reviewed-by: Michael Paquier, Jian He
Discussion: https://postgr.es/m/CAO6_XqqM6S9bQ2qd=75W+yKATwoazxSNhv5sjW06fjGAtHbTUA@mail.gmail.com
2024-10-22 13:05:51 +09:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Simplify checking for xlocale.h 2024-10-01 07:23:45 -04:00
contrib pg_stat_statements: Add tests for nested queries with level tracking 2024-10-22 13:05:51 +09:00
doc Note that index_name in ALTER INDEX ATTACH PARTITION can be schema-qualified 2024-10-20 15:36:20 +02:00
src Fix wrong assertion and poor error messages in "COPY (query) TO". 2024-10-21 15:08:22 -04:00
.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 7f7474a8e4 to .git-blame-ignore-revs. 2024-10-14 15:09:39 -05:00
.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 traces of BeOS. 2024-10-14 08:33:36 +02:00
configure.ac Remove traces of BeOS. 2024-10-14 08:33:36 +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 Simplify checking for xlocale.h 2024-10-01 07:23:45 -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/.