This looks very interesting. Have you looked at Substrait.io [1] at all?. The aim of Substrait is similar to what you describe, i.e. to create a universal relat

This looks very interesting. Have you looked at Substrait.io [1] at all?. The aim of Substrait is similar to what you describe, i.e. to create a universal relational algebra representation that can be executed directly by backend systems without having to go through SQL. [1]: https://substrait.io/ https://substrait.io/