ALTER TABLE `vn2008`.`cl_det` DROP FOREIGN KEY `cl_det_ibfk_6`; ALTER TABLE `vn2008`.`cl_det` DROP INDEX `cl_pet_id` ; ALTER TABLE `vn2008`.`cl_det` DROP FOREIGN KEY `cl_det_ibfk_5`; ALTER TABLE `vn2008`.`cl_det` DROP INDEX `cl_que_id` ;