Here is the performance stats of the solution by Oleg Zernov for TSQL Challenge18.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 9 2010 12:00AM | 234 | 0 | 702 | 1.686 |
| 2 | Apr 9 2010 12:24AM | 234 | 0 | 671 | 1.532 |
| 3 | Apr 9 2010 12:49AM | 234 | 0 | 655 | 1.793 |
| 4 | Apr 9 2010 1:13AM | 234 | 0 | 1732 | 4.023 |
| 5 | Apr 9 2010 1:37AM | 234 | 0 | 733 | 1.637 |