id,
deleted,
created,
modified,
business_type, business_id, should_amount, real_amount, remark
update order_fund set real_amount = (ifnull(real_amount,0) + #{thisTimeAmount}) where id = #{id}
update order_fund set real_amount = (ifnull(real_amount,0) + #{thisTimeAmount}) where order_id = #{orderId} and deleted = 0
UPDATE order_fund
SET discount = order_fund.real_amount / order_fund.should_amount
WHERE id = #{orderFundId}