I'm not sure why people have not hit on the following hybrid architecture that works so well for me.
I make use of table-valued db functions (IMO the most underrated feature of relational DBs) to define virtual relations/tables. I implement a set of CRUD db functions per entity. Then, on the app side, I define (or generate) DTO types representing these virtual relations. Finally, I use a custom ORM I wrote myself, which defines a general and consistent storage API, to talk to the db functions, using the DTO types.
The advantages of this approach are numerous, some include:
- I have full control of the SQL that goes into constructing the virtual table, I can leverage all the goodness of SQL here. I can even define multiple virtual relations per physical table, or read-only relations, etc, all by implementing the appropriate sets of CRUD db functions
- On the ORM side, I have all the goodness of static typing, a consistent API for all CRUD methods, a full fluent query DSL, etc
- Since, unlike tables or views, db functions can be passed arguments, i am able to layey all kinds of goodness on top of the basic CRUD actions, like audit info passing, custom upsert strategies, some level of record-based authorization, etc
But this architecture does require you to know and write SQL. IMO the value of ORMs do not lie in avoiding SQL; it lies in the capability to express consistent SQL at a higher level of abstraction, but you still need to understand your SQL.