But that's not how one should read "that is". The author should have used "e.g." here, no question. Using "i.e." would imply that there exists only one nondeter

But that's not how one should read "that is". The author should have used "e.g." here, no question. Using "i.e." would imply that there exists only one nondeterministic function in MySQL, which is not the case.