JSON to DuckDB SQL Schema & Ingestion Generator
Generate DuckDB OLAP CREATE TABLE schemas and read_json_auto() analytical queries.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use JSON to DuckDB SQL Schema & Ingestion Generator
Paste your raw JSON payload into the input editor.
Specify the target DuckDB analytics table name.
Copy or download the DuckDB SQL DDL file.
Frequently Asked Questions
Are nested structs supported in DuckDB?
Yes, nested JSON objects are mapped to native DuckDB STRUCT(...) analytical columns.
Does it include read_json_auto()?
Yes, sample automated ingestion queries are included with each schema export.
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