Subject: [PATCH v2] Allow pg_read_all_stats to see database size in \l+

From: Christoph Berg <[email-masked]>
Date: Wed, 22 Jul 2026 13:16:16 +0200

The server already allows members of pg_read_all_stats to see the size
of all databases, but psql's \l+ was too restrictive.
---
 doc/src/sgml/ref/psql-ref.sgml | 5 +++--
 src/bin/psql/describe.c        | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index 56c2692e618..4d5ee11ddd9 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -2817,8 +2817,9 @@ SELECT
         are displayed in expanded mode.
         If <literal>+</literal> is appended to the command name, database
         sizes, default tablespaces, and descriptions are also displayed.
-        (Size information is only available for databases that the current
-        user can connect to.)
+        Except for superusers or roles with privileges of the
+        <literal>pg_read_all_stats</literal> role, size information is only
+        available for databases that the current user can connect to.
         </para>
         </listitem>
       </varlistentry>
diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index a2f09c26369..ad9c8affb4f 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -986,7 +986,8 @@ listAllDbs(const char *pattern, bool verbose)
 	printACLColumn(&buf, "d.datacl");
 	if (verbose)
 		appendPQExpBuffer(&buf,
-						  ",\n  CASE WHEN pg_catalog.has_database_privilege(d.datname, 'CONNECT')\n"
+						  ",\n  CASE WHEN pg_catalog.has_database_privilege(d.datname, 'CONNECT') OR\n"
+						  "               pg_catalog.pg_has_role('pg_read_all_stats', 'USAGE')\n"
 						  "       THEN pg_catalog.pg_size_pretty(pg_catalog.pg_database_size(d.datname))\n"
 						  "       ELSE 'No Access'\n"
 						  "  END as \"%s\""
-- 
2.53.0

--GvhE+GC2PI361jLV--