Here is the performance stats of the solution by dtodd for TSQL Challenge18.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 8 2010 11:46PM | 2849 | 1 | 656 | 1.742 |
| 2 | Apr 9 2010 12:11AM | 2839 | 0 | 780 | 1.870 |
| 3 | Apr 9 2010 12:35AM | 2839 | 0 | 733 | 1.824 |
| 4 | Apr 9 2010 12:59AM | 2839 | 0 | 624 | 1.867 |
| 5 | Apr 9 2010 1:23AM | 2839 | 0 | 702 | 1.744 |