Re: How to calculate time difference excluding weekends (saturday and sunday)

From: Ken Denny <ken_at_kendenny.com>
Date: Wed, 30 Apr 2008 12:21:12 -0700 (PDT)
Message-ID: <9c1e8539-bdcc-468f-b847-8ed1cb22d11b@j22g2000hsf.googlegroups.com>


On Apr 30, 12:45 pm, deepakp <deepak10..._at_hotmail.com> wrote:
> On Apr 30, 9:29 am, Charles Hooper <hooperc2..._at_yahoo.com> wrote:
>
>
>
>
>
> > On Apr 30, 9:49 am, deepakp <deepak10..._at_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.databases.oracle.misc/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 Received on Wed Apr 30 2008 - 14:21:12 CDT

Original text of this message