SELECT users.name, COUNT(*) AS c FROM changes, users WHERE changes.user=users.user GROUP BY changes.user ORDER BY c;
+----------------+------+
| name           | c    |
+----------------+------+
| smedero        |    1 |
| takkaria       |    1 |
| dglazkov       |    1 |
| DavidBaron     |    1 |
| hsivonen       |    1 |
| gsnedders      |    2 |
| arpetti        |    2 |
| Tab Atkins     |    2 |
| Mounir Lamouri |    2 |
| jcranmer       |    2 |
| mathias        |    2 |
| mjs            |    4 |
| dean           |    4 |
| lachlan.hunt   |    5 |
| anne           |    7 |
| philipj        |   11 |
| simonp         |   53 |
| MikeSmith      |  111 |
| zcorpan        |  251 |
| Ms2ger         |  279 |
| Hixie          | 1696 |
+----------------+------+