This is nice, thanks for posting this. we are building an opensource datascience tool with similar vision as yours, and could certainly use something like this as initial data wrangling and preparation stage.
https://github.com/rebataur/rapidium
Actually SQL is pretty cool and by using concatenative concepts, you could do some pretty cool stuff.
We built a datascience tool to quickly build data apps which can be extended from the frontend, including data wrangling and datascience functions.
Most exciting part was using the PostgreSQL and SQL to process, clean and enhance data and write extensions and bring it all together.
We open sourced alpha version yesterday, more documentation to come.
Any feedback, feature request are more than welcome.
We provide Consulting, training and product engineering services on SaaS,Django, Kubernetes, AWS-EKS so do let us know if you need something more hello[at]rebataur[dot]com
if your startup has