52.38. pg_policy

52.38. `pg_policy`
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## 52.38. `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 52.38. `pg_policy` Columns

Column Type Description
`oid` `oid` Row identifier
`polname` `name` The name of the policy
`polrelid` `oid` (references `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
`polpermissive` `bool` Is the policy permissive or restrictive?
`polroles` `oid[]` (references `pg_authid`.`oid`) The roles to which the policy is applied; zero means `PUBLIC` (and normally appears alone in the array)
`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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