DataFusion is an extensible query execution framework, written in Rust, that uses Apache Arrow as its in-memory format.
This crate contains the DataFusion logical optimizer. Please see Query Optimizer in the Library User Guide for more information.
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.