usage_privileges
The view usage_privileges identifies
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, foreign servers, and sequences. There is one
row for each combination of object, grantor, and grantee.
Since collations do not have real privileges
in PostgreSQL, this view shows implicit
non-grantable USAGE privileges granted by the
owner to PUBLIC for all collations. The other
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.
Table 36.56. usage_privileges Columns
| Name | Data Type | Description |
|---|---|---|
grantor | sql_identifier | Name of the role that granted the privilege |
grantee | sql_identifier | Name of the role that the privilege was granted to |
object_catalog | sql_identifier | Name of the database containing the object (always the current database) |
object_schema | sql_identifier | Name of the schema containing the object, if applicable, else an empty string |
object_name | sql_identifier | Name of the object |
object_type | character_data | COLLATION or DOMAIN or FOREIGN DATA WRAPPER or FOREIGN SERVER or SEQUENCE |
privilege_type | character_data | Always USAGE |
is_grantable | yes_or_no | YES if the privilege is grantable, NO if not |