数据表：ims_yz_order_coin_exchange（订单--全额抵扣记录）。
| 字段 | 类型 | 默认值 | 约束 | 说明 |
|---|---|---|---|---|
id | integer unsigned | - | 非空、自增 | |
order_id | integer | - | - | |
uid | integer | - | - | |
code | string(255) | - | - | |
name | string(255) | - | - | |
amount | decimal | - | - | |
coin | decimal | - | - | |
created_at | integer | - | - | |
updated_at | integer | - | - | |
deleted_at | integer | - | - |