[FeatureRequest] Could there be a proc that automatically fetches all "Many" entries of a "One-to-many" relationship ?
> [However, Norm may be mature enough to provide a nicer interface for one to many relations. What if we add a proc that returns a seq if objects to types which are referenced as foreign keys in other types? Something like getMany that accepts two types, the "one" type and the "many" type.](https://github.com/moigagoo/norm/issues/34)

This was written back in 2019 as an off-hand comment, but I think this is still a really good idea.... particularly because I'm running into a situation where it'd be really useful :smile: 

I'd only specify that I think that the "one"-side of the parameters should be an instance, not just the type itself, so that you automatically have the ID of the one-side to query the many side with.
This could be a proc:

`proc getMany[T: Model](one: Model, many: typedesc[T]): seq[T] =`

 The proc could scan the provided type T for the FK field to "one" and build an SQL query on T's table accordingly. 
Would this be something easy to implement?