Solved

Calculate elapsed business hours - SQL 2008

Posted on 2010-11-24
5
938 Views
Last Modified: 2012-05-10
Our business is open 9-5, Monday to Friday.  I am using the SQL function in the attached text file to calculate the elapsed business hours between two datetimes.  The variables are as follows:
@startdate - the start datetime of the period (datetime)
@enddate - the end date of the period (datetime)
@starttime - the start of the business day (vchar(9))
@endtime - the end of the business day (vchar(9))

The function is called with a SQL statement that passes the values of these variables to the function.

Does anyone have any idea how I would go about modifying this function to exclude Saturdays and Sundays from the calculation?

Thanks!
business-hours.txt
0
Comment
Question by:I_play_with_DNA
  • 3
5 Comments
 
LVL 17

Expert Comment

by:OriNetworks
ID: 34208889
FIrst I would ask why the times are separated from the dates.

Create a new combined date/time
e.g.
@startdate = '1/1/2010'
@enddate = ' 1/2/2010'
@starttime = '9:00 am'
@endtime = '12:30 pm'

@newstartdate = '1/1/2010 9:00:00 am'
@newenddate = '1/2/2010 12:30:00 pm'

select datediff(minute,@newstartdate,@newenddate)/60 = the amount of hours spent
0
 
LVL 17

Expert Comment

by:OriNetworks
ID: 34208928
sorry i shouldnt have thought it was that easy.

Add to that

select @minutesUsed=datediff(minute,@newstartdate,@newenddate)

Select @minutesUsed=(@minutesUsed-(case when @StartDate<>@EndDate then datediff(day,@startdate,@enddate)*900))

this will remove the after hours minutes between days. You can also do a similar function to check for weekends that have passed.
0
 
LVL 7

Accepted Solution

by:
rmm2001 earned 167 total points
ID: 34208994
Put in a where DATEPART(weekday, @startdate) NOT IN (1, 7) (1 is sunday...7 is saturday)
0
 
LVL 7

Assisted Solution

by:Cboudroz
Cboudroz earned 167 total points
ID: 34209882
add this in the where clause:

and DATEPART(dw,DateValue) not in (1,7)
0
 
LVL 17

Assisted Solution

by:OriNetworks
OriNetworks earned 166 total points
ID: 34210702
Ithe datelart cannot be and otherwise it will evaluate as false for start or end date on weekends and not return a result. You would have to add a case statement with the datepart to subtract those days but this is not good either because it would not calculate weekends in between so oh have to use it in conjunction with a datediff to find out how many weekends are between those dates.
,
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you hear the word proxy, you may become apprehensive. This article will help you to understand Proxy and when it is useful. Let's talk Proxy for SQL Server. (Not in terms of Internet access.) Typically, you'll run into this type of problem w…
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
Via a live example, show how to extract information from SQL Server on Database, Connection and Server properties

864 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now