Here is the performance stats of the solution by MisterMagoo for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:24PM | 835 | 0 | 16 | 0.0800 |
| 2 | Apr 21 2010 11:54PM | 835 | 0 | 16 | 0.0240 |
| 3 | Apr 22 2010 12:24AM | 835 | 0 | 15 | 0.0220 |
| 4 | Apr 22 2010 12:54AM | 835 | 0 | 15 | 0.0220 |
| 5 | Apr 22 2010 1:24AM | 835 | 0 | 47 | 0.0340 |