That seems to assume some very specific "scene" of developers, or at least a team environment where it's impossible to select for developers who know SQL. That may very well be the case in your situation, but I see no reason to expect it would be the case in most situations. SQL isn't exactly a new or niche language.
I'm not talking about plain SQL, I'm talking about the included procedural language that often ships with it[1] as an extension and which is much more DBMS specific.
So, the question is, does your team know SQL/PSM, or PL/SQL, or PL/pgSQL, or some other variant, and how well.
