Dear Friends
I have a table sh_detail and there are three fields hours1,hours2,hours3. all fields are varchar2 type.
data is like
hours1 hours2 hours3 total
02:45 00:18 01:25
00:38 01:45 00:00
02:15 02:00 00:15
1. I want to add above three fields in total column
2. and want to sum every fields like select sum(hours1) from sh_detail.
Please help i will be thankful.
Regards.