Hide duplicate names from extension views
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
Branch
------
REL_18_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/8309f3f86da8103f53193b218cabe4b904550b4a
Modified Files
--------------
doc/src/sgml/config.sgml | 6 ++++++
src/backend/commands/extension.c | 24 ++++++++++++++++++++++
.../t/001_extension_control_path.pl | 9 +++++---
3 files changed, 36 insertions(+), 3 deletions(-)
