select id, type, price, create_at, update_at, del_flag, is_firing from mall_coupon and type = #{type} and price = #{price} and create_at = #{createAt} and is_firing = #{isFiring} select id, type, price,create_at createAt from mall_coupon where type = '0' and is_firing = '0' and del_flag = '0' order by id desc limit 1 where id = #{id} insert into mall_coupon id, type, price, create_at, update_at, del_flag, is_firing, #{id}, #{type}, #{price}, #{createAt}, #{updateAt}, #{delFlag}, #{isFiring}, update mall_coupon type = #{type}, price = #{price}, create_at = #{createAt}, update_at = #{updateAt}, del_flag = #{delFlag}, is_firing = #{isFiring}, where id = #{id} delete from mall_coupon where id = #{id} delete from mall_coupon where id in #{id}