CREATE TABLE `orpa_margin_change_history` (
  `id` int(11) NOT NULL,
  `date` datetime NOT NULL,
  `orpa_id` int(11) NOT NULL,
  `margin_percent` decimal(4,2) NOT NULL,
  `user_id` int(11) NOT NULL,
  `user_type` VARCHAR(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE `orpa_margin_change_history`
  ADD PRIMARY KEY (`id`);

ALTER TABLE `orpa_margin_change_history`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;

CREATE TABLE `orpa_amount_update_log` (
  `id`    INT  NOT NULL AUTO_INCREMENT,
  `date`  DATE NOT NULL,
  `count` INT  NOT NULL,
  PRIMARY KEY (`id`)
);