|PostgreSQL 8.2.6 Documentation|
|Prev||Fast Backward||Chapter 32. The Information Schema||Fast Forward||Next|
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
|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|