Agreed, not just a time-saver but a self-documenting/maintaining advantage. In concept you could change the underlying keys that relate a Foo to a Bar, and stil

Agreed, not just a time-saver but a self-documenting/maintaining advantage. In concept you could change the underlying keys that relate a Foo to a Bar, and still have your queries work. And prevents dumb typos/brainfarts like "join... on Foo.Id = Bar.Id" mistakenly written instead of "on Foo.Id = Bar.FooId".