Coming from .NET/LINQ/SQL, I would have assumed the latter. But then again, if I'd ever write ruby, I should have consulted the docs. But this kind of behavior

Coming from .NET/LINQ/SQL, I would have assumed the latter. But then again, if I'd ever write ruby, I should have consulted the docs. But this kind of behavior change at best should have introduced different API. Crazy to think that someone remotely can alter your query ANDs to ORs. That may very well destroy your database data and a whole lot of pain to rollback.