If every document will definitely have a value for both fields, you can
do...
q = query
& fq = -(+fieldA:0 +fieldB:0)
...it's more complicated if some docs don't have any value for one or both
fields: if the fields are integers (and not floats) then the easiest thing
to do is use some range queries...
fq = fieldA:[* TO -1] fieldA:[1 TO *] fieldB:[* TO -1] fieldB:[1 TO *]
...for floats you would have to get really creative with your set logic
... i'm certain it's possible, i'm just not sure off the top of my head
what the fq needs to look like.
-Hoss
