> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/functions-and-expressions/building-expressions.md).

# Building Expressions

- [Expression Operators](https://docs.cascade.io/cascade/functions-and-expressions/building-expressions/expression-operators.md)
- [Guide to Window Functions](https://docs.cascade.io/cascade/functions-and-expressions/building-expressions/guide-to-window-functions.md): Window functions partition a table before they run, making them very useful when working with large datasets