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Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
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Álvaro Herrera 615ff828e1
Fix determination of not-null constraint "locality" for inherited columns 
It is possible to have a non-inherited not-null constraint on an
inherited column, but we were failing to preserve such constraints
during pg_upgrade where the source is 17 or older, because of a bug in
the pg_dump query for it.  Oversight in commit 14e87ffa5c.  Fix that
query.  In passing, touch-up a bogus nearby comment introduced by the
same commit.

In version 17, make the regression tests leave a table in this
situation, so that this scenario is tested in the cross-version upgrade
tests of 18 and up.

Author: Dilip Kumar <dilipbalaut@gmail.com>
Reported-by: Andrew Bille <andrewbille@gmail.com>
Bug: #19074
Backpatch-through: 18
Discussion: https://postgr.es/m/19074-ae2548458cf0195c@postgresql.org
2025-10-18 18:18:19 +02:00
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doc doc: Clarify when backend_xmin in pg_stat_replication can be NULL. 2025-10-17 14:03:42 +09:00
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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/.