INSERT INTO `core_setting` 
(`param_name`, `param_value`, `value_type`, `max_size`, `pack`, `regroup`, `sequence`) 
VALUES ('maintenance', 'off', 'enum', 3, 'security', 8, 25);

INSERT INTO `core_setting` 
(`param_name`, `param_value`, `value_type`, `max_size`, `pack`, `regroup`, `sequence`) 
VALUES ('maintenance_pw', 'manutenzione', 'string', 3, 'security', 8, 25);