| grantor | sql_identifier | Name of the role that granted the privilege | 
| grantee | sql_identifier | Name of the role that the privilege was granted to | 
| table_catalog | sql_identifier | Name of the database that contains the table (always the current database) | 
| table_schema | sql_identifier | Name of the schema that contains the table | 
| table_name | sql_identifier | Name of the table | 
| privilege_type | character_data | Type of the privilege: SELECT,
       DELETE, INSERT,
       UPDATE, REFERENCES,
       or TRIGGER | 
| is_grantable | character_data | YES if the privilege is grantable, NO if not | 
| with_hierarchy | character_data | Applies to a feature not available in PostgreSQL |