Welcome to the Delta Lake documentation

Note

Delta Lake 4.0 Preview is released! See the 4.0 Preview documentation here.

This is the documentation site for Delta Lake.

• Introduction
• Apache Spark connector
  • Quickstart
  • Table batch reads and writes
  • Table streaming reads and writes
  • Table deletes, updates, and merges
  • Change data feed
  • Table utility commands
  • Constraints
  • How does Delta Lake manage feature compatibility?
  • Delta default column values
  • Delta column mapping
  • Use liquid clustering for Delta tables
  • What are deletion vectors?
  • Drop Delta table features
  • Use row tracking for Delta tables
  • Storage configuration
  • Delta type widening
  • Delta Coordinated Commits
  • DynamoDB Commit Coordinator
  • Universal Format (UniForm)
  • Read Delta Sharing Tables
  • Delta Connect (aka Spark Connect Support in Delta)
  • Concurrency control
  • Migration guide
  • Best practices
  • Frequently asked questions (FAQ)
  • Optimizations
• Trino connector
• Presto connector
• AWS Redshift Spectrum connector
  • Set up a AWS Redshift Spectrum to Delta Lake integration and query Delta tables
  • Limitations
• Snowflake connector
  • Set up a Delta Lake to Snowflake integration and query Delta tables
  • Limitations
• Google BigQuery connector
• Apache Flink connector
• Other connectors
  • Apache Druid
  • Apache Pulsar
  • ClickHouse
  • Dagster
  • FINOS Legend
  • Hopsworks
  • Apache Hive
  • Kafka Delta Ingest
  • SQL Delta Import
  • StarRocks
• Delta Kernel
  • Kernel Java
  • Kernel Rust
  • More Information
• Delta Standalone (deprecated)
  • Use cases
  • APIs
  • API compatibility
  • Project setup
  • Usage
  • Reporting issues
  • Contributing
  • Community
  • Local development
• Delta Lake APIs
  • Delta Spark
  • Delta Kernel
  • Delta Rust
  • Delta Standalone
  • Delta Flink
• Releases
  • Release notes
  • Compatibility with Apache Spark
• Delta Lake resources
  • Blog posts and talks
  • VLDB 2020 paper
  • Examples
  • Delta Lake transaction log specification
• Delta table properties reference