What is Tableau Prep?

Tableau Prep is a visual, drag-and-drop tool for cleaning, reshaping, and combining data before it ever reaches a Tableau Desktop workbook, aimed at the "data wrangling" step of analytics.

• You build a flow: a visual pipeline of steps like cleaning, filtering, splitting fields, pivoting, aggregating, and joining or unioning multiple data sources.
• Each step shows a live preview of the data as it's transformed, so you can catch mistakes immediately instead of at the end of a long script.
• Finished flows can output a cleaned data extract, or be scheduled to run automatically (via Tableau Prep Conductor on Server/Cloud) to keep downstream dashboards fresh.

Raw CSV -> Clean step (trim/rename fields) -> Join with lookup table
        -> Pivot -> Output as .hyper extract

Prep complements Desktop rather than replacing it: Prep handles the "get the data into good shape" work, while Desktop handles the "explore and visualize" work, and the two are commonly used together in the same project.

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