| PostgreSQL 9.5.0 Documentation | |||
|---|---|---|---|
| Prev | Up | Chapter 49. System Catalogs | Next |
The catalog pg_policy stores row level security policies for tables. A policy includes the kind of command that it applies to (possibly all commands), the roles that it applies to, the expression to be added as a security-barrier qualification to queries that include the table, and the expression to be added as a WITH CHECK option for queries that attempt to add new records to the table.
Table 49-36. pg_policy Columns
| Name | Type | References | Description |
|---|---|---|---|
| polname | name | The name of the policy | |
| polrelid | oid | pg_class.oid | The table to which the policy applies |
| polcmd | char | The command type to which the policy is applied: r for SELECT, a for INSERT, w for UPDATE, d for DELETE, or * for all | |
| polroles | oid[] | pg_authid.oid | The roles to which the policy is applied |
| polqual | pg_node_tree | The expression tree to be added to the security barrier qualifications for queries that use the table | |
| polwithcheck | pg_node_tree | The expression tree to be added to the WITH CHECK qualifications for queries that attempt to add rows to the table |
Note: Policies stored in pg_policy are applied only when pg_class.relrowsecurity is set for their table.