public function sqlConditionAndPlaceholderValueForCurrentUser()
 {
     // check full access cookie
     $auth_cookie_name = AuthConfig::getFullAccessCookieName();
     if ($auth_cookie_name) {
         if (isset($_COOKIE[$auth_cookie_name])) {
             return ['', []];
             // do not filter
         }
     }
     // check current user
     $current_user_id = Auth::currentUserId();
     if (!$current_user_id) {
         return [' 1=2 ', []];
         // no current user, select nothing
     }
     return $this->sqlConditionAndPlaceholderValueForUserId($current_user_id);
 }