gistfile1.txt

mysql> select s.name, count(*), RPAD('', count(*), '*') from skill_rewards as sr join skills as s on sr.skill_id = s.id group by sr.skill_id;
+-------------------+----------+-------------------------+
| name              | count(*) | RPAD('', count(*), '*') |
+-------------------+----------+-------------------------+
| Sabotage          |        1 | *                       | 
| First Aid         |        1 | *                       | 
| Vehicle Operation |        2 | **                      | 
| Seduction         |        3 | ***                     | 
| Tracking          |        2 | **                      | 
| Interrogation     |        1 | *                       | 
| Disguise          |        1 | *                       | 
| Athletics         |        2 | **                      | 
| Streetwise        |        2 | **                      | 
| Hacking           |        4 | ****                    | 
| Demolitions       |        2 | **                      | 
| Gadgetry          |        1 | *                       | 
| Security          |        2 | **                      | 
| Evasion           |        1 | *                       | 
| Science           |        1 | *                       | 
| Cryptography      |        1 | *                       | 
| Class             |        2 | **                      | 
| Smooth Talk       |        3 | ***                     | 
| Infiltration      |        3 | ***                     | 
+-------------------+----------+-------------------------+
19 rows in set (0.00 sec)