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xlDuckDb is an Excel add-in that lets you write DuckDB SQL queries directly in spreadsheet cells and get results back as normal Excel data. You can query Excel ranges, JSON files, CSV files, Parquet files, and even remote data on HTTPS or AWS S3.
- The add-in works with Excel ranges, named ranges, and tables using simple syntax like =DuckDbQuery(A27,,A1:E25), plus you can query multiple ranges in a single query by passing them as separate arguments.
- DuckDB handles messy data formats automatically—it auto-detects CSV delimiters and data types, extracts nested JSON with JSONPath syntax, and efficiently queries large Parquet files that don't fit in memory.
- You can join data across multiple file types in one SQL query (e.g., combining JSON and CSV data with a CTE and INNER JOIN), making it possible to correlate disparate datasets without leaving Excel.