37.57. usage_privileges
The viewusage_privileges identifiesUSAGE privileges granted on various kinds of objects to a currently enabled role or by a currently enabled role. InPostgreSQL, 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 inPostgreSQL, this view shows implicit non-grantableUSAGE privileges granted by the owner toPUBLIC for all collations. The other object types, however, show real privileges.
In PostgreSQL, sequences also supportSELECT andUPDATE privileges in addition to theUSAGE privilege. These are nonstandard and therefore not visible in the information schema.
Table 37.55. 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 orDOMAIN orFOREIGN DATA WRAPPER orFOREIGN SERVER orSEQUENCE |
privilege_type | character_data | AlwaysUSAGE |
is_grantable | yes_or_no | YES if the privilege is grantable,NO if not |