# Tutorials

- [Tabula Use Cases](/tutorials/tabula-use-cases.md)
- [Merge Columns](/tutorials/merge-columns.md)
- [Join Types](/tutorials/join-types.md)
- [Union Introduction](/tutorials/union-introduction.md)
- [Window Functions](/tutorials/window-functions.md): Calculates a window function operates on a group (“window”) of related rows
- [What is Unpivot?](/tutorials/what-is-unpivot.md)
- [JSON Format Tutorial](/tutorials/json-format-tutorial.md)
- [Using Regex](/tutorials/using-regex.md)