## 52.37. `pg_policy`[]() 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 52.37. `pg_policy` Columns**| Column Type<br/><br/> Description ||-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|| `oid``oid`<br/><br/> Row identifier || `polname``name`<br/><br/> The name of the policy || `polrelid``oid` (references [`pg_class`](catalog-pg-class.html).`oid`)<br/><br/> The table to which the policy applies ||`polcmd``char`<br/><br/> The command type to which the policy is applied: `r` for [SELECT](sql-select.html), `a` for [INSERT](sql-insert.html), `w` for [UPDATE](sql-update.html), `d` for [DELETE](sql-delete.html), or `*` for all|| `polpermissive``bool`<br/><br/> Is the policy permissive or restrictive? || `polroles``oid[]` (references [`pg_authid`](catalog-pg-authid.html).`oid`)<br/><br/> The roles to which the policy is applied; zero means `PUBLIC` (and normally appears alone in the array) || `polqual``pg_node_tree`<br/><br/> The expression tree to be added to the security barrier qualifications for queries that use the table || `polwithcheck``pg_node_tree`<br/><br/> 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`](catalog-pg-class.html).`relrowsecurity` is set for their table.
