# Distinct
In this document, you’ll learn how to use the *Distinct* transformation in Astera Dataprep to remove duplicate rows based on selected columns, ensuring your dataset contains only unique records.
1. To apply Distinct in Astera Dataprep, click on the *Transform* option in the toolbar and select *Distinct* from the drop-down.
2. Once selected, the *Recipe Configuration – Distinct* panel will open.
* **Column Names**: Here, you can select one or more columns from the drop-down. The uniqueness check will be applied based on the selected columns.
3. After selecting the columns, click *Apply.*
4. Now, in the grid, you can see that only unique records, based on your selected columns, remain in the dataset.
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