Personally, I believe that someone needs to build some kind of a scalable, security-hardened SQL interface that can be queried directly from the browser using a

Personally, I believe that someone needs to build some kind of a scalable, security-hardened SQL interface that can be queried directly from the browser using actual SQL. Part of that need involves federated data from multiple services/data sources. We already have a query language that can even handle nested values (see ISO SQL:2016 standard), why not just adapt it for use in the browser?