Here is the performance stats of the solution by Josh Shilling for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:23PM | 835 | 0 | 15 | 0.1850 |
| 2 | Apr 21 2010 11:53PM | 835 | 0 | 15 | 0.0180 |
| 3 | Apr 22 2010 12:23AM | 835 | 0 | 32 | 0.0190 |
| 4 | Apr 22 2010 12:53AM | 835 | 0 | 16 | 0.0190 |
| 5 | Apr 22 2010 1:23AM | 835 | 0 | 15 | 0.0340 |