Here is the performance stats of the solution by Aurelien for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:14PM | 27 | 0 | 62 | 0.2220 |
| 2 | Apr 21 2010 11:44PM | 27 | 0 | 78 | 0.4450 |
| 3 | Apr 22 2010 12:14AM | 27 | 0 | 63 | 0.2040 |
| 4 | Apr 22 2010 12:44AM | 27 | 0 | 47 | 0.2020 |
| 5 | Apr 22 2010 1:14AM | 27 | 0 | 63 | 0.1850 |