Re: Why adding "dual" in the "from" clause speeds this query up?

Where is dual added to again?
(you provided an example *without* the dual table)

-- 
Cheers
Nuno Souto
wizofoz2k_at_yahoo.com.au.nospam
"Vitalis" <vitalopedrotti_at_yahoo.fr> wrote in message
news:4e6dd3ba.0402200456.56c741bb_at_posting.google.com...


> A friend of mine told me that one of his complicated queries was

> wondrously speed up when he added "dual" to the "from" clause.

> The query looks like:

>