Turn Thousands of Messy JSON Files into One Parquet: DuckDB for Fast Data Warehouse Ingestion ·
If you've inherited a bucket full of thousands of tiny JSON files—one per API call, one per event, one per log minute—you know the pain: slow scans, schema anxiety, and rising warehouse bills. This guide shows you how to consolidate them into clean Parquet with DuckDB: handling schema drift, maintaining lineage, optimizing performance, and integrating with dbt. Touch your raw files once, then model against something stable.