DuckDB demo parity guides

DuckDB’s public demo catalog showcases how the engine queries local files, remote datasets, nested JSON, and in-memory data frames without leaving SQL. This section mirrors each of those workflows with DuckPlus so teams adopting the immutable API can recognise familiar entry points. The snippets run against the published duckplus package and assume Python 3.11+ with DuckDB 0.10 or newer.

• Querying local files with DuckPlus
• Querying remote files and object storage
• Working with JSON and nested data
• Notebook and DataFrame integration
• Analytics recipes with typed expressions
• Installing extensions the DuckPlus way