Perhaps it's just the way I've been using them but I've had no such problems with a properly constructed EAV. Certainly, I've not had to do a 20 or 30 table self join.
--Jeff Moden
RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row. First step towards the paradigm shift of writing Set Based code: ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.
Change is inevitable... Change for the better is not.