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DataFusion is an extensible query engine written in [Rust] that
uses [Apache Arrow] as its in-memory format.
This crate provides libraries and binaries for developers building fast and
feature-rich database and analytic systems, customized for particular workloads.
See [use cases] for examples. The following related subprojects target end users:檢視完整 README ↗DataFusion is an extensible query engine written in Rust that uses Apache Arrow as its in-memory format.
This crate provides libraries and binaries for developers building fast and feature-rich database and analytic systems, customized for particular workloads. See use cases for examples. The following related subprojects target end users:
"Out of the box," DataFusion offers SQL and DataFrame APIs, excellent performance, built-in support for CSV, Parquet, JSON, and Avro, extensive customization, and a great community.
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 Architecture section for more details.
Here are links to important resources:
DataFusion is great for building projects such as domain-specific query engines, new database platforms and data pipelines, query languages and more. It lets you start quickly from a fully working engine, and then customize those features specific to your needs. See the list of known users.
Please see the contributor guide and communication pages for more information.
We discuss our roadmap via GitHub issues and invite you to join the conversation. The current discussion is the DataFusion 2026 Q3-Q4 Roadmap Discussion.
This crate has several features which can be specified in your Cargo.toml.
Default features:
nested_expressions: functions for working with nested types such as array_to_stringcompression: reading files compressed with xz2, bzip2, flate2, and zstdcrypto_expressions: cryptographic functions such as md5 and sha256datetime_expressions: date and time functions such as to_timestampencoding_expressions: encode and decode functionsparquet: support for reading the Apache Parquet formatsql: support for SQL parsing and planningregex_expressions: regular expression functions, such as regexp_matchunicode_expressions: include Unicode-aware functions such as character_lengthunparser: enables support to reverse LogicalPlans back into SQLrecursive_protection: uses recursive for stack overflow protection.Optional features:
avro: support for reading the Apache Avro formatbacktrace: include backtrace information in error messagesparquet_encryption: support for using Parquet Modular Encryptionserde: enable arrow-schema's serde featurePublic methods in Apache DataFusion evolve over time: while we try to maintain a stable API, we also improve the API over time. As a result, we typically deprecate methods before removing them, according to the deprecation guidelines.
Cargo.lockFollowing the guidance on committing Cargo.lock files, this project commits
its Cargo.lock file.
CI uses the committed Cargo.lock file, and dependencies are updated regularly
using Dependabot PRs.