When I edit a result set, I cannot set a field to {null}. I tried to delete the contents, put {null} into it, nothing helps. How should I proceed?
Cut from the Toad Help:
Set the value of a cell to null. - Press CTRL+DELETE.
Thank you and sorry for not searching the help diligently enough. Usually I’m not a help vampire 
me too, but sometimes it helps
No, no, I meant this:
http://slash7.com/2006/12/22/vampires/
Ahh, good to know you are not one of these