>> puts a.as(:text)
+----------------------------------+
| first_name | last_name | a  | b  |
+----------------------------------+
|   james    |   gray    | 1  | 2  |
|   james    |   britt   | 7  | 8  |
|   james    |   gray    | 1  | 3  |
|    greg    |   brown   | 11 | 12 |
|    greg    |   brown   | 2  | 3  |
+----------------------------------+
=> nil
>> puts a.split(:group => %w[first_name last_name]).james_gray.as(:text)
+-------+
| a | b |
+-------+
| 1 | 2 |
| 1 | 3 |
+-------+
=> nil
>> puts a.split(:group => %w[first_name last_name]).greg_brown.as(:text)
+---------+
| a  | b  |
+---------+
| 11 | 12 |
| 2  | 3  |
+---------+