PostgreSQL 9.2.3 Documentation
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# 34.38. `role_usage_grants`

The view `role_usage_grants` identifies `USAGE` privileges granted on various kinds of objects where the grantor or grantee is a currently enabled role. Further information can be found under `usage_privileges`. The only effective difference between this view and `usage_privileges` is that this view omits objects that have been made accessible to the current user by way of a grant to `PUBLIC`.

Table 34-36. `role_usage_grants` Columns

Name | Data Type | Description
--- | --- | ---
`grantor` | `sql_identifier` | The name of the role that granted the privilege
`grantee` | `sql_identifier` | The 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

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