Here is the performance stats of the solution by pauljchang for TSQL Challenge18.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 9 2010 12:01AM | 41 | 0 | 390 | 1.247 |
| 2 | Apr 9 2010 12:25AM | 41 | 0 | 359 | 1.178 |
| 3 | Apr 9 2010 12:50AM | 41 | 0 | 375 | 1.285 |
| 4 | Apr 9 2010 1:14AM | 41 | 0 | 265 | 1.073 |
| 5 | Apr 9 2010 1:38AM | 41 | 0 | 359 | 1.141 |