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 UTC DateTime in query		  New Topic  Reply to Topic
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figmo
Starting Member

18 Posts
Posted - 07/08/2012 :  23:43:59  Show Profile  Reply with Quote
I am using an orders table that has a DateTime column that represents the UTC DateTime an order was created.

I've run into a problem that seems like there should be a simple solution for - but haven't been able to find it.

Given this simple query:
SELECT * FROM ORDERS WHERE OrderDate >= @StartDate AND OrderDate <= @EndDate

Works as expected - EXCEPT for orders placed later in the day on the EndDate. Because the UTC DateTime stored is tomorrow (from my timezone)

Certainly there has to be some way to tell SQL Server that we want all orders placed on or before today - IN MY TIME ZONE?

This is part of a shopping cart software so I had no hand in the design. I could add columns - I am the administrator - but want to avoid this to make upgrades easier.

visakh16
Very Important crosS Applying yaK Herder

India
47157 Posts
Posted - 07/09/2012 :  00:29:39  Show Profile  Reply with Quote 
SELECT * FROM ORDERS WHERE OrderDate >= DATEADD(ss,-1 * DATEDIFF(ss,GETDATE(),GETUTCDATE()),@StartDate) AND OrderDate <= DATEADD(ss,-1 * DATEDIFF(ss,GETDATE(),GETUTCDATE()),@EndDate)


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SQL Server MVP
http://visakhm.blogspot.com/
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figmo
Starting Member

18 Posts
Posted - 07/09/2012 :  11:27:41  Show Profile  Reply with Quote
Thank you visakh. Your query did not work as posted - but you gave me the tools I needed. I was able to figure it out from there.

For others who may come across this thread: I had to remove the '-1 *' from his query. Like this:

SELECT * FROM ORDERS WHERE OrderDate >= DATEADD(ss,DATEDIFF(ss,GETDATE(),GETUTCDATE()),@StartDate) AND OrderDate <= DATEADD(ss,DATEDIFF(ss,GETDATE(),GETUTCDATE()),@EndDate)

Because we want to add the offset to the search date - not subtract it. The DATEDIFF as you have it will return an inverted UTC offset (postive number in the west, negative number in the east) which means we must ADD it to the start/end date - not subtract it.

Anyway - query works fine now. Thanks for your help!
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visakh16
Very Important crosS Applying yaK Herder

India
47157 Posts
Posted - 07/09/2012 :  11:33:37  Show Profile  Reply with Quote
welcome

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
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