# How to calculate the hours between StartDate and EndDate

Hello,

I created a query in PB9.0 which pull out the record from an Oracle DB. There are two fields StartDate and EndDate in 1/1/2003 00:00:00 format. I want to use EndDate-StartDate to get the time.

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Commented:
Hello,

Doing it in sql will be easy :

select (end_date - start_date)*24 HOURS from your_table;

You will get the no of hours between end_date and start_date.
Regards,
Vikas
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Commented:
HI,

thru PB scripting u can use the function DaysAfter as follows....

Long ll_days, ll_hours

ll_days DaysAfter(1999-12-20, 1999-12-24)
ll_days returns 4:

so the number of hours would be...
ll_hours = ll_days * 24

Cheers,
Rosh
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Commented:
HI,

As said by Vikas its much easier to do in SQL in Oracle but what Vikas have said will return the difference rounding to 100
i.e  9:45 hrs would be returned as 9:75

if you want the sql to return 9:45 try this

select TRUNC(ROUND(DUR,2))||':'|| TRUNC(mod((dur*60),60))
from (
select TO_NUMBER(end_date - start_date) *24 dur

thanks

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Author Commented:
Hi.
I use ROUND((Enddtm-Startdtm)*24,2) for the  following period. but I got 5.97. why?

StartDate: 2/3/2003 12:32:00
EndDate: 2/3/2003 18:30:00

Thanks.
0
Commented:
hi mrong

when you are using round it will round the number to the hundreth position
if you see my sql in the first part i am just taking the hours out and  and minutes sepratly and then joining them to get the result

if you need help in creating the function just let us know.

gajender

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