DuckDB supports several data sources, including file formats, network protocols, and database systems:

• AWS S3 buckets and storage with S3-compatible API
• Azure Blob Storage
• Blob files
• Cloudflare R2
• CSV
• Delta Lake
• DuckLake
• Excel
• httpfs
• Iceberg
• JSON
• Lance tables
• MySQL
• Parquet
• PostgreSQL
• SQLite
• Text files
• Vortex files