So there's no such thing as a first row, second row, etc.
There is if you declare it to be so and you use an ORDER BY. No real difference between that and using a SEQUENCE except that a SEQUENCE would allow gaps on a rollback.
--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.