8309f3f86d
If extensions of equal names were installed in different directories in the path, the views pg_available_extensions and pg_available_extension_versions would show all of them, even though only the first one was actually reachable by CREATE EXTENSION. To fix, have those views skip extensions found later in the path if they have names already found earlier. Also add a bit of documentation that only the first extension in the path can be used. Reported-by: Pierrick <pierrick.chovelon@dalibo.com> Discussion: https://www.postgresql.org/message-id/flat/8f5a0517-1cb8-4085-ae89-77e7454e27ba%40dalibo.com
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/18/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/18/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/.