Hi All,
Please can anyway know how to get the result as below.

Original data :

Col_A Col_B
sachin 1
saurav 2
rahul 3
viru 4
yuvaraj 5
anil 6
srinath 7
sachin 8
saurav 9
rahul 10
anil 11
sachin 12
rahul 13
viru 14


The result shud be like this in Column C:
For all the duplicate entries in column A the valuse in column B are
unique. So all the values in column B shud be printed in column C.
So then we can use another code of removing duplicate lines and removes
all duplicate enries in column A .
This has added advantede as we will not loose valuse in column B. As
happens in usual remove duplicate lines code that I am finding in this
blog.

Col_A Col_B Col_C
sachin 1 1, 8, 12
saurav 2 2, 9
rahul 3 3, 10, 13
viru 4 4, 14
yuvaraj 5 5
anil 6 6, 11
srinath 7 7
sachin 8
saurav 9
rahul 10
anil 11
sachin 12
rahul 13
viru 14

Thanks.