PostgreSQL 9.6.2 Documentation
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# 50.37. `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 50-37. `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.

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