期权静态信息 (cn_option_static_data)
数据描述：
文档
用例
表结构
| 字段 | 字段类型 | 字段描述 |
| date | timestamp[ns] | 发布时间 |
| call_put | string | - |
| exchange | string | - |
| list_date | timestamp[ns] | - |
| multiplier | double | - |
| trading_day | int32 | - |
| underlying | string | - |
| contract_id | string | 合约ID |
| delist_date | timestamp[ns] | - |
| expire_date | timestamp[ns] | - |
| margin_uint | double | - |
| strike_date | timestamp[ns] | - |
| strike_price | double | - |
| trading_code | string | - |
| delivery_date | timestamp[ns] | - |
| open_interest | int32 | 持仓量 |
| product_class | string | - |
| uderlying_pre_close | double | - |
| underlying_pre_settle | double | - |
| instrument | string | 标的代码 |
| pre_settle | double | - |
| pre_close | double | - |
| name | string | - |
表名cn_option_static_data
起始时间：
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