I think supporting variables and functions already solves most of my composability gripes with SQL. Another problem that I have with composing SQL is that larg

I think supporting variables and functions already solves most of my composability gripes with SQL. Another problem that I have with composing SQL is that large queries quickly become unreadable, and error messages are also often not terribly helpful. I think having a more expressive type system would help with the error messages. Do you have any plans on adding a type system to PRQL?