ALTER TABLE `cai_account_cash`
    ADD COLUMN `coin_callback_coin` int(11) NOT NULL DEFAULT 0 COMMENT '提现紫贝返还值' AFTER `withdraw_coin`;
update cai_account_cash
set coin_callback_coin = withdraw_coin;

ALTER TABLE `cai_withdraw_exchange`
    ADD COLUMN `coin_callback_num` bigint(20) NOT NULL DEFAULT 0 COMMENT '失败返还货币' AFTER `coin_num`;
update cai_withdraw_exchange
set coin_callback_num = coin_num;
