I'm not sure GoogleSQL is, for all intents and purposes, anything more than just a particular SQL implementation. Notably, it still breaks from the relational model in the same way and, as such, is prone to the very same bugs of which we speak.
The closest thing to the 'Rust' of SQL is probably Datalog. Even something like QUEL, which Postgres used for the first decade of its life, would have likely left us in a much better place.
But Oracle won the database wars, so we got left with the junk that came with it – for compatibility initially, and now we can't seem to move past SQL because the typical developer somehow has come to think SQL and relational algebra/calculus are the exact same thing...
