how to compare time row by row

i have ouput like this

2010-05-14 16:47:04.0
2010-05-14 16:48:04.0
2010-05-14 16:49:04.0
2010-05-14 18:50:50.0
2010-05-14 18:51:50.0

Code (markup):

i am going to get the minutes difference between the timestamp,

how do i get the difference row by row

please help me any body having idea

 

Hi,
if this output comes from DB, just use TIMESTAMPDIFF function.
Regards