From: Nathan Bossart <nathan@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Add new OID alias type regdatabase.
Date: Mon, 30 Jun 2025 20:40:38 +0000
Message-ID: <E1uWLIs-0045Zc-1A@gemulon.postgresql.org> (raw)
Add new OID alias type regdatabase.
This provides a convenient way to look up a database's OID. For
example, the query
SELECT * FROM pg_shdepend
WHERE dbid = (SELECT oid FROM pg_database
WHERE datname = current_database());
can now be simplified to
SELECT * FROM pg_shdepend
WHERE dbid = current_database()::regdatabase;
Like the regrole type, regdatabase has cluster-wide scope, so we
disallow regdatabase constants from appearing in stored
expressions.
Bumps catversion.
Author: Ian Lawrence Barwick <barwick@gmail.com>
Reviewed-by: Greg Sabino Mullane <htamfids@gmail.com>
Reviewed-by: Jian He <jian.universality@gmail.com>
Reviewed-by: FabrÃzio de Royes Mello <fabriziomello@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/aBpjJhyHpM2LYcG0%40nathan
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/bd09f024a1bbdd7a7e2ca944595a9d4b6c90fb83
Modified Files
--------------
contrib/postgres_fdw/deparse.c | 6 ++
doc/src/sgml/datatype.sgml | 15 ++-
doc/src/sgml/func.sgml | 17 +++
doc/src/sgml/ref/pgupgrade.sgml | 3 +-
src/backend/bootstrap/bootstrap.c | 2 +
src/backend/catalog/dependency.c | 11 ++
src/backend/utils/adt/regproc.c | 118 ++++++++++++++++++++
src/backend/utils/adt/selfuncs.c | 2 +
src/backend/utils/cache/catcache.c | 1 +
src/bin/pg_upgrade/check.c | 1 +
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_cast.dat | 14 +++
src/include/catalog/pg_proc.dat | 17 +++
src/include/catalog/pg_type.dat | 5 +
src/test/regress/expected/regproc.out | 174 ++++++++++++++++++++++++++++++
src/test/regress/expected/type_sanity.out | 1 +
src/test/regress/sql/regproc.sql | 38 +++++++
src/test/regress/sql/type_sanity.sql | 1 +
18 files changed, 424 insertions(+), 4 deletions(-)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-committers@postgresql.org
Cc: nathan@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Add new OID alias type regdatabase.
In-Reply-To: <E1uWLIs-0045Zc-1A@gemulon.postgresql.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox