[simicd]

Agree, substrait is a really cool project! Related: if you like substrait you might want to check out datafusion too. The project is a query execution engine built on top of Apache Arrow (incl. SQL parser, query planner & optimizer, execution engine, extensible user defined functions, among others) and it implements a substrait provider and consumer: https://github.com/apache/arrow-datafusion/tree/main/datafus...

[cmrdporcupine]

In general I'm not interested in analytics/OLAP, but in more OLTP type workloads, so the Arrow stuff and that whole world is of not much interest to me.