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.
|The name of the policy|
|The table to which the policy applies|
|The command type to which the policy is applied: |
|The roles to which the policy is applied|
|The expression tree to be added to the security barrier qualifications for queries that use the table|
|The expression tree to be added to the WITH CHECK qualifications for queries that attempt to add rows to the table|
Policies stored in
pg_policy are applied only when
relrowsecurity is set for their table.