Subject Re: about computed fields performance
Author Anderson Farias
Well, maybe the following quote (from 'Data Definition Guide', pg.98)
responde to my question:

"A computed column is one whose value is calculated each time the
column is accessed at run time."

To me, it seens the answer is "no. they┬┤re not 'calculated' at all if
not present in the select columns list"

Can any one confirm that?!