The view usage_privileges is meant to identify USAGE privileges granted on various kinds of objects to the current user or by the current user. 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 may contain more useful information.
Table 32-36. 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)
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