diff --git a/doc/src/sgml/information_schema.sgml b/doc/src/sgml/information_schema.sgml
index d8e42e4f630..df806a3c853 100644
--- a/doc/src/sgml/information_schema.sgml
+++ b/doc/src/sgml/information_schema.sgml
@@ -3839,7 +3839,7 @@ ORDER BY c.ordinal_position;
object_type
character_data
- COLLATION or DOMAIN or FOREIGN DATA WRAPPER or FOREIGN SERVER
+ COLLATION or DOMAIN or FOREIGN DATA WRAPPER or FOREIGN SERVER or SEQUENCE
@@ -5859,7 +5859,7 @@ ORDER BY c.ordinal_position;
USAGE privileges granted on various kinds of
objects to a currently enabled role or by a currently enabled role.
In PostgreSQL, this currently applies to
- collations, domains, foreign-data wrappers, and foreign servers. There is one
+ collations, domains, foreign-data wrappers, foreign servers, and sequences. There is one
row for each combination of object, grantor, and grantee.
@@ -5871,6 +5871,13 @@ ORDER BY c.ordinal_position;
object types, however, show real privileges.
+
+ In PostgreSQL, sequences also support SELECT
+ and UPDATE privileges in addition to
+ the USAGE privilege. These are nonstandard and therefore
+ not visible in the information schema.
+
+
usage_privileges Columns
@@ -5918,7 +5925,7 @@ ORDER BY c.ordinal_position;
object_type
character_data
- COLLATION or DOMAIN or FOREIGN DATA WRAPPER or FOREIGN SERVER
+ COLLATION or DOMAIN or FOREIGN DATA WRAPPER or FOREIGN SERVER or SEQUENCE
diff --git a/doc/src/sgml/ref/grant.sgml b/doc/src/sgml/ref/grant.sgml
index c5edaed153a..05f98bb6bb5 100644
--- a/doc/src/sgml/ref/grant.sgml
+++ b/doc/src/sgml/ref/grant.sgml
@@ -642,6 +642,18 @@ GRANT admins TO joe;
translations.
+
+ In the SQL standard, sequences only have a USAGE
+ privilege, which controls the use of the NEXT VALUE FOR
+ expression, which is equivalent to the
+ function nextval in PostgreSQL. The sequence
+ privileges SELECT and UPDATE are
+ PostgreSQL extensions. The application of the
+ sequence USAGE privilege to
+ the currval function is also a PostgreSQL extension (as
+ is the function itself).
+
+
Privileges on databases, tablespaces, schemas, and languages are
PostgreSQL extensions.
diff --git a/src/backend/catalog/information_schema.sql b/src/backend/catalog/information_schema.sql
index f591f64caf7..c4f8f0f4eaa 100644
--- a/src/backend/catalog/information_schema.sql
+++ b/src/backend/catalog/information_schema.sql
@@ -2212,6 +2212,43 @@ CREATE VIEW usage_privileges AS
WHERE u_grantor.oid = srv.grantor
AND grantee.oid = srv.grantee
AND srv.prtype IN ('USAGE')
+ AND (pg_has_role(u_grantor.oid, 'USAGE')
+ OR pg_has_role(grantee.oid, 'USAGE')
+ OR grantee.rolname = 'PUBLIC')
+
+ UNION ALL
+
+ /* sequences */
+ SELECT CAST(u_grantor.rolname AS sql_identifier) AS grantor,
+ CAST(grantee.rolname AS sql_identifier) AS grantee,
+ CAST(current_database() AS sql_identifier) AS object_catalog,
+ CAST(n.nspname AS sql_identifier) AS object_schema,
+ CAST(c.relname AS sql_identifier) AS object_name,
+ CAST('SEQUENCE' AS character_data) AS object_type,
+ CAST('USAGE' AS character_data) AS privilege_type,
+ CAST(
+ CASE WHEN
+ -- object owner always has grant options
+ pg_has_role(grantee.oid, c.relowner, 'USAGE')
+ OR c.grantable
+ THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
+
+ FROM (
+ SELECT oid, relname, relnamespace, relkind, relowner, (aclexplode(coalesce(relacl, acldefault('r', relowner)))).* FROM pg_class
+ ) AS c (oid, relname, relnamespace, relkind, relowner, grantor, grantee, prtype, grantable),
+ pg_namespace n,
+ pg_authid u_grantor,
+ (
+ SELECT oid, rolname FROM pg_authid
+ UNION ALL
+ SELECT 0::oid, 'PUBLIC'
+ ) AS grantee (oid, rolname)
+
+ WHERE c.relnamespace = n.oid
+ AND c.relkind = 'S'
+ AND c.grantee = grantee.oid
+ AND c.grantor = u_grantor.oid
+ AND c.prtype IN ('USAGE')
AND (pg_has_role(u_grantor.oid, 'USAGE')
OR pg_has_role(grantee.oid, 'USAGE')
OR grantee.rolname = 'PUBLIC');