# Dataprep

- [Introduction to Dataprep](https://documentation.astera.com/dataprep/introduction-to-dataprep.md)
- [Getting Started with Astera Dataprep](https://documentation.astera.com/dataprep/getting-started-with-astera-dataprep.md)
- [Recipe Panel](https://documentation.astera.com/dataprep/recipe-panel.md)
- [Dataprep Profile Browser](https://documentation.astera.com/dataprep/dataprep-profile-browser.md)
- [Grid Central Preview](https://documentation.astera.com/dataprep/grid-central-preview.md)
- [Reading Sources](https://documentation.astera.com/dataprep/reading-sources.md)
- [Reading a Project Source](https://documentation.astera.com/dataprep/reading-sources/reading-a-project-source.md)
- [Reading a File Source](https://documentation.astera.com/dataprep/reading-sources/reading-a-file-source.md)
- [Reading a Dataset](https://documentation.astera.com/dataprep/reading-sources/reading-a-dataset.md)
- [Reading a Database Table](https://documentation.astera.com/dataprep/reading-sources/reading-a-database-table.md)
- [Exporting Data](https://documentation.astera.com/dataprep/exporting-data.md)
- [Transforming Data](https://documentation.astera.com/dataprep/transforming-data.md)
- [Route](https://documentation.astera.com/dataprep/transforming-data/route.md)
- [Aggregate](https://documentation.astera.com/dataprep/transforming-data/aggregate.md)
- [Filter](https://documentation.astera.com/dataprep/transforming-data/filter.md)
- [Distinct](https://documentation.astera.com/dataprep/transforming-data/distinct.md)
- [Stack](https://documentation.astera.com/dataprep/transforming-data/stack.md)
- [Unstack](https://documentation.astera.com/dataprep/transforming-data/unstack.md)
- [Layout](https://documentation.astera.com/dataprep/layout.md)
- [Add Column](https://documentation.astera.com/dataprep/layout/add-column.md)
- [Change Column](https://documentation.astera.com/dataprep/layout/change-column.md)
- [Move Column](https://documentation.astera.com/dataprep/layout/move-column.md)
- [Rename Column](https://documentation.astera.com/dataprep/layout/rename-column.md)
- [Select Columns](https://documentation.astera.com/dataprep/layout/select-columns.md)
- [Sort Columns](https://documentation.astera.com/dataprep/layout/sort-columns.md)
- [Split Columns](https://documentation.astera.com/dataprep/layout/split-columns.md)
- [Concatenate Columns](https://documentation.astera.com/dataprep/layout/concatenate-columns.md)
- [Remove Columns](https://documentation.astera.com/dataprep/layout/remove-columns.md)
- [Cleanse](https://documentation.astera.com/dataprep/cleanse.md)
- [Remove](https://documentation.astera.com/dataprep/cleanse/remove.md)
- [Replace Null Values](https://documentation.astera.com/dataprep/cleanse/replace-null-values.md)
- [Find and Replace](https://documentation.astera.com/dataprep/cleanse/find-and-replace.md)
- [Compute All](https://documentation.astera.com/dataprep/cleanse/compute-all.md)
- [Change Case](https://documentation.astera.com/dataprep/cleanse/change-case.md)
- [Joins](https://documentation.astera.com/dataprep/joins.md)
- [Join Using a Dataset](https://documentation.astera.com/dataprep/joins/join-using-a-dataset.md)
- [Join Using a File](https://documentation.astera.com/dataprep/joins/join-using-a-file.md)
- [Join Using a Source](https://documentation.astera.com/dataprep/joins/join-using-a-source.md)
- [Join Using a Table](https://documentation.astera.com/dataprep/joins/join-using-a-table.md)
- [Union](https://documentation.astera.com/dataprep/union.md)
- [Lookup](https://documentation.astera.com/dataprep/lookup.md)
- [Variables](https://documentation.astera.com/dataprep/variables.md)
- [Validate](https://documentation.astera.com/dataprep/validate.md)
- [Astera Dataprep Privacy Policy](https://documentation.astera.com/dataprep/astera-dataprep-privacy-policy.md)
- [Astera Dataprep Terms of Service](https://documentation.astera.com/dataprep/astera-dataprep-terms-of-service.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.astera.com/dataprep.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.