Can anybody tell me how connect by level works

Hi ,
Can anybody tell me how connect by level works
select level
from dual
connect by level <= 10 ;

Yes, fully agreed, but still:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:40476301944675#51121960168460
That might be an old example, but dual's behaviour changes often whenever a new database version gets shipped, like FAST DUALwas 'invented' for Optimizer since 10G.
Oh well, I know you know all that ;)
though of course any one row table could be usedTrue and interesting, but would you dare to replace all references to dual on a production system to another one row table?
Theoretically you're right, but imo (and others) Oracle keeps on doing stuff for dual 'under the hood'.
It is a totally different 'table'.
That's my point to OP.
Maybe I was and am only nitpicking, I now realize, so I'll go get me some coffee ;)

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