Data Preview Overview

You can preview data to help build or fine-tune a pipeline. When using Control Hub, you can also use data preview when developing pipeline fragments.

You can use data preview with complete or incomplete pipelines and fragments. And you can choose from several options to provide source data for the preview.

When you preview data, source data passes through the pipeline or fragment, allowing you to review how the data passes and changes through each stage. You can edit stage properties and run the preview again to see how your changes affect the data. You can also edit preview data to test and tune the pipeline logic.

You can preview data for one stage at a time or for a group of stages. You can also view the data in list or table view, and refresh the preview data.

After running preview, you can view the input and output schema for each stage on the Schema tab in the pipeline properties panel.