The view usage_privileges is meant to identify USAGE privileges granted on various kinds of objects to a currently enabled role or by a currently enabled role. In PostgreSQL, this currently only applies to domains, and since domains do not have real privileges in PostgreSQL, this view shows implicit USAGE privileges granted to PUBLIC for all domains. In the future, this view might contain more useful information.
Table 33-41. usage_privileges Columns
| Name | Data Type | Description |
|---|---|---|
| grantor | sql_identifier | Currently set to the name of the owner of the object |
| grantee | sql_identifier | Currently always PUBLIC |
| 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 |
| object_name | sql_identifier | Name of the object |
| object_type | character_data | Currently always DOMAIN |
| privilege_type | character_data | Always USAGE |
| is_grantable | character_data | Currently always NO |