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.
In PostgreSQL, you can only grant
privileges on entire tables, not individual columns. Therefore,
this view contains the same information as
table_privileges, just represented through one
row for each column in each appropriate table, but it only covers
privilege types where column granularity is possible:
SELECT, INSERT,
UPDATE, REFERENCES. If you
want to make your applications fit for possible future
developments, it is generally the right choice to use this view
instead of table_privileges if one of those
privilege types is concerned.
Table 32-8. 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 | character_data | YES if the privilege is grantable, NO if not |