Here is the performance stats of the solution by gaga for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:17PM | 41879 | 0 | 437 | 0.5610 |
| 2 | Apr 21 2010 11:47PM | 41879 | 0 | 422 | 0.5740 |
| 3 | Apr 22 2010 12:17AM | 41879 | 0 | 421 | 0.5150 |
| 4 | Apr 22 2010 12:47AM | 41879 | 0 | 405 | 0.4110 |
| 5 | Apr 22 2010 1:17AM | 41879 | 0 | 421 | 0.4340 |