SET NAMES utf8;

SET FOREIGN_KEY_CHECKS = 0;

ALTER TABLE `t_bill_order`
ADD COLUMN IF NOT EXISTS `bill_object`  varchar(13) NULL AFTER `bill_explain`;

ALTER TABLE `t_statement_calculation`
ADD COLUMN IF NOT EXISTS  `calculation_ctime` datetime(0) NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP AFTER `day`;

SET FOREIGN_KEY_CHECKS = 1;