ALTER POLICY ALTER POLICY 7 SQL - Language Statements ALTER POLICY change the definition of a row-security policy ALTER POLICY name ON table_name [ RENAME TO new_name ] [ TO { role_name | PUBLIC } [, ...] ] [ USING ( expression ) ] [ WITH CHECK ( check_expression ) ] ALTER POLICY changes the definition of an existing row-security policy. To use ALTER POLICY, you must own the table that the policy applies to. name The name of an existing policy to alter. table_name The name (optionally schema-qualified) of the table that the policy is on. new_name The new name for the policy. role_name The role to which the policy applies. Multiple roles can be specified at one time. To apply the policy to all roles, use PUBLIC, which is also the default. expression The USING expression for the policy. This expression will be added as a security-barrier qualification to queries which use the table automatically. If multiple policies are being applied for a given table then they are all combined and added using OR. The USING expression applies to records which are being retrieved from the table. check_expression The with-check expression for the policy. This expression will be added as a WITH CHECK OPTION qualification to queries which use the table automatically. If multiple policies are being applied for a given table then they are all combined and added using OR. The WITH CHECK expression applies to records which are being added to the table. ALTER POLICY is a PostgreSQL extension.