# DataFusion Command-line Interface
[DataFusion](https://datafusion.apache.org/) is an extensible query execution framework, written in Rust, that uses Apache Arrow as its in-memory format.
DataFusion CLI (`datafusion-cli`) is a small command line utility that runs SQL queries using the DataFusion engine.
# Frequently Asked Questions
## Where can I find more information?
See the [`datafusion-cli` documentation](https://datafusion.apache.org/user-guide/cli/index.html) for further information.
## How do I make my IDE work with `datafusion-cli`?
"open" the `datafusion/datafusion-cli` project as its own top level
project in my IDE (rather than opening `datafusion`)
The reason `datafusion-cli` is not part of the main workspace in
[`datafusion Cargo.toml`] file is that `datafusion-cli` is a binary and has a
checked in `Cargo.lock` file to ensure reproducible builds.
However, the `datafusion` and sub crates are intended for use as libraries and
thus do not have a `Cargo.lock` file checked in.
[`datafusion cargo.toml`]: https://github.com/apache/datafusion/blob/main/Cargo.toml