mysql> CALL PQ ('pq', ('{"title":"butter is good as", "id":3}',
                       '{"title":"was butter","id":4}',
                       '{"title":"sas was butter","id":5}',
                       '{"title":"bas was butter", "id":6}',
                       '{"title":"butter is good as","id":7}'),
                 1 as docs_json ,1 as docs,1 as query);
+------+-----------+------------+------+---------+
| UID  | Documents | Query      | Tags | Filters |
+------+-----------+------------+------+---------+
|    1 | 1,5       | butter is  |      |         |
|    2 | 2,3,4     | butter was |      |         |
+------+-----------+------------+------+---------+
2 rows in set (0.00 sec)

mysql> CALL PQ ('pq', ('{"title":"butter is good as", "id":3}',
                       '{"title":"was butter","id":4}',
                       '{"title":"sas was butter","id":5}',
                       '{"title":"bas was butter", "id":6}',
                       '{"title":"butter is good as","id":7}'),
                1 as docs_json ,1 as docs,1 as query, 'id' as docs_id);
+------+-----------+------------+------+---------+
| UID  | Documents | Query      | Tags | Filters |
+------+-----------+------------+------+---------+
|    1 | 3,7       | butter is  |      |         |
|    2 | 4,5,6     | butter was |      |         |
+------+-----------+------------+------+---------+
2 rows in set (0.01 sec)

mysql> CALL PQ ('pq', ('{"title":"butter is good as", "id":3,"gid":10}',

                       '{"title":"was butter","id":4,"gid":20}',
                       '{"title":"sas was butter","id":5,"gid":10}',
                       '{"title":"bas was butter", "id":6,"gid":20}',
                       '{"title":"butter is good as","id":7,"gid":10}'),
                1 as docs_json ,1 as docs,1 as query, 'gid' as docs_id);
+------+-----------+------------+------+---------+
| UID  | Documents | Query      | Tags | Filters |
+------+-----------+------------+------+---------+
|    1 | 10        | butter is  |      |         |
|    2 | 10,20     | butter was |      |         |
+------+-----------+------------+------+---------+
2 rows in set (0.00 sec)