http://test.dwagn.org/wagn/find_non_empty_cards

"not" in WQL should work with simple card defs

fyi, operators are more efficient that relationships, so, ceteris paribus, it's best to prefer them.

  --Ethan McCutchen.....Tue Mar 01 09:12:49 -0800 2011

workaround (as well as being more efficient) is:

{"content": ["ne",""] }

  --John Abbe.....Tue Mar 01 11:43:27 -0800 2011

actually, the above works now

  --Ethan McCutchen.....Tue Nov 29 09:55:26 -0800 2011