This topic was cover complitly by Itzik Ben-Gan years ago
So? There's lot's of folks that don't even know who he is, never mind what a Numbers or Tally table is.
--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.