ALTER TABLE `mallink`.`wx_offline_activity_grant_item`
    ADD COLUMN `starting_tax_point` decimal(10, 2) NULL COMMENT '税点金额起点' AFTER `award_count`,
ADD COLUMN `tax_points` decimal(10, 2) NULL COMMENT '税点比例' AFTER `starting_tax_point`,
ADD COLUMN `tax_points_amount` decimal(10, 2) NULL COMMENT '税点金额' AFTER `tax_points`;

ALTER TABLE `mallink`.`wx_offline_activity_grant_cash_back`
    ADD COLUMN `activity_item_mode_type` smallint(1) NULL COMMENT '活动项模式' AFTER `activity_item_type`;

update wx_offline_activity_grant_cash_back set activity_item_mode_type = 2;

ALTER TABLE `mallink`.`wx_offline_activity_grant_cash_back`
    MODIFY COLUMN `activity_item_mode_type` smallint(1) NOT NULL COMMENT '活动项模式' AFTER `activity_item_type`;