No, this is not possible in any supported way. If you're looking for 'any way' (and since it's your wiki, anyway) I think you can delete the page and recreate the edit in the way you want it.
Topic on Project:Support desk
Hi Ammarpad,
Thank you for the quick reply, from your answer its sound absolute.
Is from your familiarity with the the DB schema it is something practical,
or is it better not to go in that direction at all?
"is it better not to go in that direction at all?" Yes.