# Apache DataFusion Pruning Logic
[Apache DataFusion] is an extensible query execution framework, written in Rust, that uses [Apache Arrow] as its in-memory format.
This crate is a submodule of DataFusion that contains pruning logic, to analyze filter expressions with
statistics such as min/max values and null counts, proving files / large subsections of files can be skipped
without reading the actual data.
Most projects should use the [`datafusion`] crate directly, which re-exports
this module. If you are already using the [`datafusion`] crate, there is no
reason to use this crate directly in your project as well.
[apache arrow]: https://arrow.apache.org/
[apache datafusion]: https://datafusion.apache.org/
[`datafusion`]: https://crates.io/crates/datafusion