Here is the performance stats of the solution by lmu92 for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:30PM | 301 | 0 | 63 | 0.3860 |
| 2 | Apr 22 2010 12:00AM | 301 | 0 | 109 | 0.3630 |
| 3 | Apr 22 2010 12:30AM | 301 | 0 | 94 | 0.2510 |
| 4 | Apr 22 2010 1:00AM | 301 | 0 | 78 | 0.3920 |
| 5 | Apr 22 2010 1:30AM | 301 | 0 | 62 | 0.3130 |