35.14. column_privileges
 The view column_privileges identifies all privileges granted on columns to a currently enabled role or by a currently enabled role. There is one row for each combination of column, grantor, and grantee. 
 If a privilege has been granted on an entire table, it will show up in this view as a grant for each column, but only for the privilege types where column granularity is possible: SELECT, INSERT, UPDATE, REFERENCES. 
Table 35.12. column_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 | 
table_catalog | sql_identifier | Name of the database that contains the table that contains the column (always the current database) | 
table_schema | sql_identifier | Name of the schema that contains the table that contains the column | 
table_name | sql_identifier | Name of the table that contains the column | 
column_name | sql_identifier | Name of the column | 
privilege_type | character_data |  Type of the privilege: SELECT, INSERT, UPDATE, or REFERENCES | 
is_grantable | yes_or_no | YES if the privilege is grantable, NO if not |