$sql = qq/  SELECT DISTINCT min(escore) as escore, org_id
            FROM blast, protein
            WHERE EXISTS (  SELECT id2, escore, org_id2
                            FROM blast, protein
                            WHERE id1 = id
                            AND text_id = ?
                            UNION
                            SELECT id1, escore, org_id1
                            FROM blast, protein
                            WHERE id2 = id
                            AND text_id = ? )
             GROUP BY org_id
          /;