Here is the performance stats of the solution by leszek_g for TSQL Challenge23.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Jun 16 2010 11:59PM | 119629 | 21 | 6427 | 6.556 |
| 2 | Jun 17 2010 12:22AM | 119636 | 14 | 6677 | 6.740 |
| 3 | Jun 17 2010 12:44AM | 119636 | 14 | 6646 | 6.655 |
| 4 | Jun 17 2010 1:07AM | 119636 | 14 | 6552 | 6.640 |
| 5 | Jun 17 2010 1:30AM | 119636 | 14 | 6583 | 6.636 |