The following two queries return results (using N1QL tutorial site) in a different order:
SELECT META().id, * FROM tutorial USE KEYS ["dave", "ian"]
SELECT META(e).id, e.* FROM tutorial e USE KEYS ["dave", "ian"]
As you can see, the second query just uses e as an alias.
I notice this because I’m chasing a bug in the .NET 2.7.1 client, where, using the same queries above (against a local database), I get different results from deserialization - but that’s another topic.