> For the complete documentation index, see [llms.txt](https://help.impact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.impact.com/brand/zh/what-would-you-like-to-learn-about/advocate-program/manage-advocate-participants/custom-and-calculated-fields/recalculate-a-calculated-field.md).

# 重新计算计算字段

当你设置新的计算字段时，我们只会在收到符合你的计算条件的新事件数据时才执行计算。重新计算是对历史事件数据运行该计算的一种可选方式。重新计算历史数据会更新参与者的个人资料，但不会触发你的项目规则运行——因此你可以安全地执行重新计算，而不会影响你的项目。

#### 开始重新计算

在设置或编辑使用以下任一方式的计算字段时，你可以请求重新计算： `求和` 或一个 `计数` 计算。

1. 从左侧导航菜单中，选择 ![](https://impact-1.gitbook.io/docs/emvxfLrwrlacc4y3y02Y/~gitbook/image?url=https%3A%2F%2F4048883401-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FwMLlMoFBtKJa8ptd3zaw%252Fuploads%252Fgit-blob-230534471fef5f40808e921e41ee44e4a06ded03%252Fe6cb9548999afdc1ed3ce4942e4cb5b45b5cecbd323267aac2a7cd1915fccc09.svg%3Falt%3Dmedia\&width=300\&dpr=3\&quality=100\&sign=71dd50ef\&sv=2) **\[Engage] → 数据源 → 字段**.
2. 打开字段创建界面。
   * 要创建新的计算字段，请选择 **创建计算字段**.
   * 要编辑现有的计算字段，请在 *字段* 表中找到它。将光标悬停在该字段上并选择 **编辑**.
3. 在 *审核* 部分，选择 ![](/files/48509e0f0c9ae68203294f8aae7777211a4315e1) **保存时重新计算值** 复选框。
4. 选择 **保存**.

{% hint style="info" %}
**重新计算示例：** 现在是9月26日。你正在设置一个固定为1个月的计算字段 [跟踪窗口](/brand/zh/what-would-you-like-to-learn-about/advocate-program/manage-advocate-participants/custom-and-calculated-fields/tracking-windows-for-calculated-fields-explained.md)。你不希望该字段只从26日开始计算直到月底，而是希望它考虑整个9月的数值。你可以在设置字段时选择 ![](/files/48509e0f0c9ae68203294f8aae7777211a4315e1) **\[未勾选框]** **回填计算** 复选框来实现这一点。重新计算会在你保存更改后开始。
{% endhint %}

#### 处理顺序

{% hint style="info" %}
**事件处理顺序：** 在重新计算期间，事件可能会以无序方式处理。只有在队列中的事件正在处理时我们收到新的事件数据，才会发生这种情况。
{% endhint %}

重新计算不会立即完成，具体所需时间取决于需要处理的数据量。你可以从 ![](https://impact-1.gitbook.io/docs/emvxfLrwrlacc4y3y02Y/~gitbook/image?url=https%3A%2F%2F4048883401-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FwMLlMoFBtKJa8ptd3zaw%252Fuploads%252Fgit-blob-230534471fef5f40808e921e41ee44e4a06ded03%252Fe6cb9548999afdc1ed3ce4942e4cb5b45b5cecbd323267aac2a7cd1915fccc09.svg%3Falt%3Dmedia\&width=300\&dpr=3\&quality=100\&sign=71dd50ef\&sv=2) **\[Engage] → 数据源 → 进程 页面**.

在重新计算进行期间收到的任何事件都会被放入队列，直到重新计算完成。重新计算完成后，我们将开始按接收顺序处理这些事件。


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