Why would you even *want* to do this? Why not just create all the stored
procedures, then execute the one you need?
Your idea is terribly bad. Not because of performance (that would
probably not be as bad as you expect), but because of security. It is
like going on vacation and leaving the door of your house not only
unlocked, but even wide open. And placing a big sign in the yard: "Hey,
burglars - the door is open and I'm away until the end of the month, so
please help yoourself!"
(Remove _NO_ and _SPAM_ to get my e-mail address)