Here is the performance stats of the solution by James Pua for TSQL Challenge18.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 8 2010 11:48PM | 1119729 | 1048 | 7706 | 8.165 |
| 2 | Apr 9 2010 12:12AM | 1119910 | 872 | 7441 | 8.573 |
| 3 | Apr 9 2010 12:37AM | 1119946 | 866 | 7924 | 8.283 |
| 4 | Apr 9 2010 1:01AM | 1119918 | 866 | 6895 | 7.470 |
| 5 | Apr 9 2010 1:25AM | 1119892 | 874 | 6833 | 7.152 |