参考数据(Referencing data)

引用数据或数据映射是指访问工作流中先前节点的信息。这使你可以将较早步骤的输出用作后续节点的输入，从而创建通过多个操作传递数据的动态工作流。

🌐 Referencing data, or data mapping, means accessing information from previous nodes in your workflow. This allows you to use output from earlier steps as input for later nodes, creating dynamic workflows that pass data through multiple operations.

当你引用数据时，你并没有改变它。你只是指向已经存在的值，以便在节点参数、表达式或自定义代码中使用它们。

🌐 When you reference data, you're not changing it. You're pointing to values that already exist so you can use them in node parameters, expressions, or custom code.

如果你想更改你引用的数据，请参见 转换数据。

🌐 If you want to change the data you're referencing, see Transforming data.

如何引用数据(How to reference data)

引用数据的主要方式是使用表达式。你可以通过在参数字段中输入表达式，或者从 UI 中的输入面板拖放字段来创建表达式。表达式将使用项目链接自动确定要使用的正确项目。

🌐 The main way to reference data is using expressions. You can create expressions by typing them in a parameter's field or dragging and dropping fields from the Input panel in the UI. Expressions will automatically figure out the correct item to use using item linking.