> For the complete documentation index, see [llms.txt](https://documentation.astera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.astera.com/dataprep/transforming-data/aggregate.md).

# Aggregate

In this document, you will explore how to aggregate in Astera Dataprep.    

1. To aggregate in Astera Dataprep, you can click on the *Transform* option in the toolbar and select *Aggregate* option from the drop-down.

![](https://3181888596-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzEifS4h8yurLAAwiGNX2%2Fuploads%2FN7LTRgYAi76eIeH4uguH%2F0.png?alt=media)

2. Once selected, the *Recipe Configuration – Aggregate* panel will open. 

![](https://3181888596-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzEifS4h8yurLAAwiGNX2%2Fuploads%2FvTf5buT4xkYo14ablX4O%2F1.png?alt=media)

3. Here, you can configure the *Aggregate* section by selecting column names in the *Name* drop-down, adding any expressions in the *Calculation* column, and selecting an *Aggregate Function* from the drop-down with all the aggregate functions.

![](https://3181888596-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzEifS4h8yurLAAwiGNX2%2Fuploads%2FHNdS00F0VDwVGAIXbNHW%2F2.png?alt=media)

4. Once done, you can click on *Apply* ![](https://3181888596-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzEifS4h8yurLAAwiGNX2%2Fuploads%2F7VsSbSLkUrOXP5XbWHhi%2F4.png?alt=media)

Now, in the grid, you can see that the columns have been grouped by the *EmployeeID* and a *Count* aggregate function has been applied to the *OrderID* field.

![](https://3181888596-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzEifS4h8yurLAAwiGNX2%2Fuploads%2FQXx4bGRLmobNWNw5b4qt%2F4.png?alt=media)

This concludes the document on using *Aggregate* in Astera Dataprep.


---

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