: I'm having difficultly filtering my documents when a field is either : blank or set to a specific value. I would have thought this would work : : fq=-Type:[* TO *] OR Type:blue
Rule#1 don't try to mix AND/OR syntax with +/- syntax ... it never works the way you want. "a OR b" is just syntactic sugar for "a b" ... "-a OR b" is equivilent to "-a b" ... if you use debugQuery=true and look at the parsed_filter_queries you'll see that your fq is being parsed as... -Type:[* TO *] Type:blue ...looking at it that way, odes it make sense why it doesn't match any documents? there is only one "positive" clause, which is that Type == blue. But then you are excluding any docs where Type has a value, so you get the empty set. you could have a special "Type_empty" boolean field and use... fq = Type_empty:true Type:blue ...or you can play tricks with the syntax, and do something like this... fq = (*:* -Type:[* TO *]) Type:blue -Hoss