INSERT INTO `permissions` (`key`, `description`, `active`, `is_system`)
VALUES ('notifications.view', 'Can view and manage own notifications', 1, 1)
ON DUPLICATE KEY UPDATE
  `description` = VALUES(`description`),
  `active` = VALUES(`active`),
  `is_system` = VALUES(`is_system`);

INSERT INTO `role_permissions` (`role_id`, `permission_id`, `created`)
SELECT r.id, p.id, NOW()
FROM roles r
JOIN permissions p ON p.`key` = 'notifications.view'
WHERE r.active = 1
ON DUPLICATE KEY UPDATE role_id = role_id;