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| <section id="apache-datafusion"> |
| <h1>Apache DataFusion<a class="headerlink" href="#apache-datafusion" title="Link to this heading">¶</a></h1> |
| <p> |
| <!-- Place this tag where you want the button to render. --> |
| <a class="github-button" href="https://github.com/apache/datafusion" data-size="large" data-show-count="true" aria-label="Star apache/datafusion on GitHub">Star</a> |
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| </p><p>DataFusion is an extensible query engine written in <a class="reference external" href="http://rustlang.org">Rust</a> that |
| uses <a class="reference external" href="https://arrow.apache.org">Apache Arrow</a> as its in-memory format.</p> |
| <p>The documentation on this site is for the <a class="reference external" href="https://github.com/apache/datafusion">core DataFusion project</a>, which contains |
| libraries and binaries for developers building fast and feature rich database and analytic systems, |
| customized to particular workloads. See <a class="reference external" href="https://datafusion.apache.org/user-guide/introduction.html#use-cases">use cases</a> for examples.</p> |
| <p>The following related subprojects target end users and have separate documentation.</p> |
| <ul class="simple"> |
| <li><p><a class="reference external" href="https://datafusion.apache.org/python/">DataFusion Python</a> offers a Python interface for SQL and DataFrame |
| queries.</p></li> |
| <li><p><a class="reference external" href="https://github.com/apache/datafusion-ray/">DataFusion Ray</a> provides a distributed version of DataFusion |
| that scales out on <a class="reference external" href="https://www.ray.io">Ray</a> clusters.</p></li> |
| <li><p><a class="reference external" href="https://datafusion.apache.org/comet/">DataFusion Comet</a> is an accelerator for Apache Spark based on |
| DataFusion.</p></li> |
| </ul> |
| <p>“Out of the box,” DataFusion offers <a class="reference external" href="https://datafusion.apache.org/user-guide/sql/index.html">SQL</a> |
| and <a class="reference external" href="https://docs.rs/datafusion/latest/datafusion/dataframe/struct.DataFrame.html">Dataframe</a> APIs, |
| excellent <a class="reference external" href="https://benchmark.clickhouse.com/">performance</a>, built-in support for CSV, Parquet, JSON, and Avro, |
| extensive customization, and a great community. |
| <a class="reference external" href="https://github.com/apache/datafusion-python">Python Bindings</a> are also available.</p> |
| <p>DataFusion features a full query planner, a columnar, streaming, multi-threaded, |
| vectorized execution engine, and partitioned data sources. You can |
| customize DataFusion at almost all points including additional data sources, |
| query languages, functions, custom operators and more. |
| See the <a class="reference external" href="https://datafusion.apache.org/contributor-guide/architecture.html">Architecture</a> section for more details.</p> |
| <p>To get started, see</p> |
| <ul class="simple"> |
| <li><p>The <a class="reference external" href="user-guide/example-usage.html">example usage</a> section of the user guide and the <a class="reference external" href="https://github.com/apache/datafusion/tree/main/datafusion-examples">datafusion-examples</a> directory.</p></li> |
| <li><p>The <a class="reference external" href="library-user-guide/index.html">library user guide</a> for examples of using DataFusion’s extension APIs</p></li> |
| <li><p>The <a class="reference external" href="contributor-guide/index.html#developer-s-guide">developer’s guide</a> for contributing and <a class="reference external" href="contributor-guide/communication.html">communication</a> for getting in touch with us.</p></li> |
| </ul> |
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| <ul> |
| <li class="toctree-l1"><a class="reference external" href="https://apache.org">Apache Software Foundation</a></li> |
| <li class="toctree-l1"><a class="reference external" href="https://www.apache.org/licenses/">License</a></li> |
| <li class="toctree-l1"><a class="reference external" href="https://www.apache.org/foundation/sponsorship.html">Donate</a></li> |
| <li class="toctree-l1"><a class="reference external" href="https://www.apache.org/foundation/thanks.html">Thanks</a></li> |
| <li class="toctree-l1"><a class="reference external" href="https://www.apache.org/security/">Security</a></li> |
| </ul> |
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| <ul> |
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