This is a pretty strange page. It isn't an encyclopedic article describing SQL compliance as a concept, isn't named "comparison of SQL implementations" as you'd expect for such a table, and even then has no front-matter or descriptive text of any kind. It's also dangerously low on references, making any current claims in the table all but meaningless. I'm not sure it's worthwhile filling this in even if you *do* have the SQL specification and SQLite documentation sitting in front of you.