I'm trying to push the boundaries of SQL by building Anyquery[1]. It's a SQL query engine that allows you to run queries on anything (GitHub, Todoist, Parquet, Google Sheets, logs, emails, etc.)

It's mental gymnastics to transform different data sources (e.g. a spreadsheet) into a SQL database with write support, but I do enjoy the journey and learn a lot from it.

[1] https://github.com/julien040/anyquery