0941aadcd5
Without this, an additional change to the same pg_attribute row within the same command will fail. This is possible at least with ALTER TABLE ADD COLUMN on a multiple-inheritance-pathway structure. (Another potential hazard is that immediately-following operations might not see the missingval.) Introduced by 95f650674, which split the former coding that used a single pg_attribute update to change both atthasdef and atthasmissing/attmissingval into two updates, but missed that this should entail two CommandCounterIncrements as well. Like that fix, back-patch through v13. Reported-by: Alexander Lakhin <exclusion@gmail.com> Author: Tender Wang <tndrwang@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/025a3ffa-5eff-4a88-97fb-8f583b015965@gmail.com Backpatch-through: 13
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/.