Comment 2 for bug 670906

The conversion in both cases is in the column attribute itself (Person.name), not in the Eq or In expressions. It's consistent, and it's efficient as it means we don't have to arbitrarily navigate the expression tree to look for potential uncovered literals within expressions.

My suggestion is to just use the latter form, as it looks and reads nicely, prevents having to import expressions, is fast, and even works. ;-)