: er... since the second batch of queries returned no hits, does that : not indicate that the problem _isn't_ with fq? You practically : stripped it down to raw lucene territory here.
yeah, i'm with mike ... if q=birds AND MyIntField:0 returns no hits, it doesn't suprise me that q=birds&fq=MyIntField:0 returns no hits. what does q=MyIntField:0 return? have you tried debugQuery=true & explainOther=(some query that matches a doc you expect to get from the main query) ? -Hoss