Here is the performance stats of the solution by pp.pragnesh for TSQL Challenge20.
| Attempt | Start Time | Reads | Writes | CPU | Duration (Sec) |
| 1 | Apr 21 2010 11:34PM | 1115 | 0 | 63 | 0.1030 |
| 2 | Apr 22 2010 12:04AM | 1115 | 0 | 31 | 0.1270 |
| 3 | Apr 22 2010 12:34AM | 1115 | 0 | 32 | 0.0920 |
| 4 | Apr 22 2010 1:04AM | 1115 | 0 | 47 | 0.1800 |
| 5 | Apr 22 2010 1:34AM | 1115 | 0 | 31 | 0.2400 |