> For the complete documentation index, see [llms.txt](https://docs.tomat.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tomat.ai/data-transformation/formulas/window-functions.md).

# Window Functions

Window functions are not supported in expressions but you can use node [**Rolling Functions**](/data-transformation/transforms/rolling-functions.md) for these purposes (supports Min, Max, Avm, Sum, and Count window functions)