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Old 05-02-2008, 05:05 AM
Ken Denny
 
Posts: n/a
Default Re: How to calculate time difference excluding weekends (saturday andsunday)

On Apr 30, 12:45*pm, deepakp <deepak10...@hotmail.com> wrote:
> On Apr 30, 9:29 am, Charles Hooper <hooperc2...@yahoo.com> wrote:
>
>
>
>
>
> > On Apr 30, 9:49 am, deepakp <deepak10...@hotmail.com> wrote:

>
> > > I have an Oracle table that has 2 Date fields..i.e. the data type -
> > > DATE

>
> > > Field 1: *START_DATE sample value *"2008-04-04 12:00:00";
> > > Field 2: *END_DATE *sample value *"2008-04-07 05:46:07";

>
> > > If I subtract one date from another, I can get the time difference.

>
> > > Round((END_DATE - START_DATE), 4) AS TOTAL_DAYS

>
> > > The above results in 3.7404

>
> > > Between 2008-04-04 and 2008-04-07, there is Saturday and Sunday which
> > > are 2008-04-05 and 2008-04-06.
> > > I would like them to be excluded.

>
> > > Hence, the resultant that I'm looking for should be 1.7404 *-- not
> > > 3.7404

>
> > > Is there a simple way to get the desired solution?

>
> > > Thanks,
> > > Deepak

>
> > Have you tried a Google search of the Usenet archives, or even a
> > regular Google search?http://groups.google.com/group/comp....sc/browse_thre......

>
> > Charles Hooper
> > IT Manager/Oracle DBA
> > K&M Machine-Fabricating, Inc.

>
> Thank you for your response. I did search online and could not find
> any that showed time difference between. The examples I found were
> similar to the ones you pasted..which show count of days between 2
> dates. That is not what I'm looking for. Instead, I'm looking for time
> difference excluding weekends. *The closest match I found in online
> search washttp://searchoracle.techtarget.com/expert/KnowledgebaseAnswer/0,28962...


Assuming that date2 is the later date and that neither date falls on a
Saturday or Sunday, this should do it:

date2 - date1 - 2*(trunc(next_day(date2-1,'FRI')) -
trunc(next_day(date1-1,'FRI')))/7
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