This looks really cool! Especially using datafusion underneath means that it probably is blazingly fast.<p>If you like this, I recommend taking a look at OctoSQL[0], which I'm the author of.<p>It's plenty fast and easier to add new data sources for as external plugins.<p>It can also handle endless streams of data natively, so you can do running groupings on i.e. tailed JSON logs.<p>Additionally, it's able to push down predicates to the database below, so if you're selecting 10 rows from a 1 billion row table, it'll just get those 10 rows instead of getting them all and filtering in memory.<p>[0]: <a href="https://github.com/cube2222/octosql" rel="nofollow">https://github.com/cube2222/octosql</a>