Hi..

I have datetime data in my table kanban_data field chemicalweighing_dateEntry.
sample data of chemicalweighing_dateEntry:

2012-03-20 08:12:55
2012-03-20 08:16:44
2012-03-20 08:19:28
2012-03-20 08:20:17
2012-03-20 08:27:52
2012-03-20 08:28:36
2012-03-20 08:29:03
2012-03-20 08:31:47
2012-03-20 08:32:24
2012-03-20 08:35:45

I need to get the aging of chemicalweighing_dateEntry.

using this formula:

Aging time (00:00:00) = now() - SUM of chemicalweighing_dateEntry.


I don't know what mysql function should I used to get the aging time.
Thank you