input is like
Type,Financial_ yr,Month,Amount
T1 ,2010 ,April,1000
T1 ,2010 ,May ,2000
T1 ,2010 ,June ,3000
T2 ,2011 ,May ,1500
T2 ,2011 ,July ,3500
T2 ,2011 ,Aug ,4000
My output wiil be like
Type,Financial_ yr,M1 ,M2 ,M3 ,Total_amount
T1 ,2010 ,1000 ,2000,3000,6000
T2 ,2011 ,1500 ,3500,4000,9000
Type,Financial_ yr,Month,Amount
T1 ,2010 ,April,1000
T1 ,2010 ,May ,2000
T1 ,2010 ,June ,3000
T2 ,2011 ,May ,1500
T2 ,2011 ,July ,3500
T2 ,2011 ,Aug ,4000
My output wiil be like
Type,Financial_ yr,M1 ,M2 ,M3 ,Total_amount
T1 ,2010 ,1000 ,2000,3000,6000
T2 ,2011 ,1500 ,3500,4000,9000
Comment