Answer / gourvendra singh

Buddy i have did this thru the D2k, while creating the
column with the datatype varchar2 and put the format of the
field on the form level as the time format. this will
convert the time in seconds and store in the database.for
ex ur 1:00 will store as 3600 in the database

Answer / sushant kumar

select sum(to_number(substr(num,1,2))) ||':'||
sum(to_number(substr(num,4,2))) ||':'||
sum(to_number(substr(num,7,2)))
from tt

Answer / avi007

select sum(hiredate,'hh') ||':'|| sum(hiredate,'mm')
||':'|| sum(hiredate,'ss') from emp;

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