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How to exclude weekends when using Diffdate function

Posted on 2011-09-17
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Last Modified: 2012-06-27
I have a query to measure delivery performance. Using
DATEDIFF ( DAY , SIH.[Order Date], SIL.[Shipment Date] ) AS [Ship Days],
this gives me a value including weekends.
How do I exclude the weekends?
Thanks.
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Question by:Paul G
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Expert Comment

by:Haris Djulic
ID: 36553879
try this
where datepart (dw,  SIL.[Shipment Date]) is not in ('saturday', 'Sunday')

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Haris Djulic earned 1000 total points
ID: 36553893
that was fast reading.. ;)

here is the wanted solutions just replace @startdate, @enddate


select datediff(dd,@startdate,@enddate)-2*datediff(ww,@startdate,@enddate)
+ case when datepart(dw,@startdate)=1 or datepart(dw,@enddate)=7 then -1
when datepart(dw,@startdate)=7 or datepart(dw,@enddate)=1 then +1
else 0 end
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Author Closing Comment

by:Paul G
ID: 36554133
Just what I wanted. Thanks.
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