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When ALTER TABLE ... ALTER COLUMN TYPE (or any subcommand that rebuilds them) drops and re-creates the extended statistics objects depending on the altered column, the re-created objects were owned by the role running ALTER TABLE rather than by the original owner of the statistics. Remember each object's owner before dropping it, and restore it on re-creation. CreateStatistics()'s signature changes and CreateStatsStmt gains a field, but no known third-party code calls the former or constructs the latter. Author: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Noah Misch <noah@leadboat.com> Backpatch-through: 14 Security: CVE-2026-6469
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.