Here is the performance stats of the solution by tbruce for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:41PM | 1079 | 0 | 46 | 0.5960 |
| 2 | Apr 22 2010 12:10AM | 1079 | 0 | 47 | 0.2110 |
| 3 | Apr 22 2010 12:40AM | 1079 | 0 | 31 | 0.2180 |
| 4 | Apr 22 2010 1:11AM | 1079 | 0 | 31 | 0.2120 |
| 5 | Apr 22 2010 1:41AM | 1079 | 0 | 31 | 0.3590 |