Here is the performance stats of the solution by MarioPuskaric for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:28PM | 844 | 0 | 15 | 0.0140 |
| 2 | Apr 21 2010 11:58PM | 844 | 0 | 0 | 0.0380 |
| 3 | Apr 22 2010 12:28AM | 844 | 0 | 16 | 0.0140 |
| 4 | Apr 22 2010 12:58AM | 844 | 0 | 16 | 0.0130 |
| 5 | Apr 22 2010 1:28AM | 844 | 0 | 16 | 0.0130 |