The certs and tests that rely on details (syntax etc) really miss the point. Such tests reward blind memorization and don't look for understanding.

Ideally a qualified applicant has a more general understanding of problem solving (and work habits to go along). This person can sit down with a different version than the product tested with, and, with a little consultation into manuals provide a solution. This is also the kind of SQL dba who can, in a pinch, help out with an Oracle problem after reviewing the documentation.

Details change constantly. Problem solving not so much.