ALTER POLICY
ALTER POLICY — change the definition of a row level security policy
Synopsis
ALTER POLICYnameONtable_nameRENAME TOnew_nameALTER POLICYnameONtable_name[ TO {role_name| PUBLIC | CURRENT_USER | SESSION_USER } [, ...] ] [ USING (using_expression) ] [ WITH CHECK (check_expression) ]
Description
ALTER POLICY changes the definition of an existing row-level security policy. 
 To use ALTER POLICY, you must own the table that the policy applies to. 
 In the second form of ALTER POLICY, the role list, using_expression, and check_expression are replaced independently if specified. When one of those clauses is omitted, the corresponding part of the policy is unchanged. 
Parameters
- 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(s) to which the policy applies. Multiple roles can be specified at one time. To apply the policy to all roles, use - PUBLIC.
- using_expression
- The - USINGexpression for the policy. See CREATE POLICY for details.
- check_expression
- The - WITH CHECKexpression for the policy. See CREATE POLICY for details.
Compatibility
ALTER POLICY is a Postgres Pro extension.