> For the complete documentation index, see [llms.txt](https://docs.coreway.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coreway.com/yoov-plus/worksheet/worksheet-design/field-type/other-table-field.md).
# 他表字段
## **1. 核心功能与概念**
* **作用**：与“关联记录”字段配合使用，用于提取关联记录中特定字段的值。当关联数据变化时，引用的值可以**实时同步更新**。
* **特性**：他表字段会**继承**所引用字段的类型与特性。例如，引用的是数字字段，则可参与计算；引用的是附件字段，则可预览下载。
## **2. 配置要点**
* **关联记录**：他表字段必须绑定一个**单条关联记录**字段作为数据来源。
* **字段类型（关键选择）**：
* **仅显示**：仅实时展示关联字段的最新值，**不存储**在当前表中。适用于仅需查看、不用于搜索、筛选或计算的场景。
* **储存数据**：将关联字段的值**存储**在当前表记录中，并保持同步。存储后，该值可用于**搜索、筛选、排序、统计**，也可被**公式、文本组合**等其他字段引用计算。
## **3. 典型应用场景**
* **场景一：自动填充信息**\
在《订单明细》表中关联《产品表》后，添加他表字段引用产品的“规格”。选择产品时，其规格信息**自动填充**到订单明细中。
* **场景二：支持计算与统计**\
在《订单明细》中，将他表字段“单价”设置为**储存数据**，即可被本表的“公式”字段引用，自动计算出“小计 = 数量 × 单价”。
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