Hi All

I am having the a table(1 million) with data as follows:

Input:
Col1 Col2 Col3
1 1895 4/7/2007
2 1895 4/7/2007
3 1895 3/5/2005
4 6600 3/3/2007
5 6600 3/3/2007
6 6600 3/1/2006
so on


Now I would like to have my output as follows:

Desired Output:
Col1 Col2 Col3
1 1895 4/7/2007
4 6600 3/3/2007
...