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DuckDB released a plugin that lets Claude Code query data files directly using SQL instead of writing Python scripts, making it faster and more accurate. The plugin handles everything from local CSVs to remote cloud storage and spatial data, with Claude automatically picking the right tool based on what you ask.
- Claude can now run SQL queries against any file format (CSV, Parquet, JSON, Excel, etc.) on disk or in cloud storage, getting exact answers instead of guessing column names
- The plugin includes specialized skills for S3/GCS exploration, spatial queries (distances, nearest neighbors), searching DuckDB docs, and recalling decisions from past sessions
- When a query fails, Claude reads the error message and retries with corrected SQL automatically, creating a two-layer conversation (natural language with you, SQL with DuckDB)