Solved

Localtime To UTC

Posted on 2009-07-03
8
593 Views
Last Modified: 2012-05-07
Hi

How do I convert a smalldatetime (the local time) into the UTC time in SQL 2005? I can only see a getUTCdate() function in the system functions.

Thanks
0
Comment
Question by:silchester
  • 4
  • 3
8 Comments
 
LVL 31

Expert Comment

by:RiteshShah
ID: 24771173
can't you use that function?
0
 
LVL 9

Expert Comment

by:drequinox
ID: 24771196
use this code,
-- this is not my code, got it from internet somewhere a while ago , all credit goes to original author but would be nice to receive points for it though !!! :) , IF it works !!!
      DECLARE
          @offset TINYINT,
          @dt SMALLDATETIME,
          @sdt SMALLDATETIME,
          @edt SMALLDATETIME,
          DECLARE @i TINYINT
       
      SELECT
          @offset = 5,
          @i = 1,
          @dt = '20050201 05:32'
       
      -- find first Sunday in April
       
      WHILE @i < 7
      BEGIN
          SET @sdt = RTRIM(YEAR(@dt))+'040'+RTRIM(@i)
          IF DATEPART(weekday,@sdt)=1  
          BEGIN
              SET @i = 7
          END
          SET @i = @i + 1
      END
       
      -- find last Sunday in October
       
      SET @i = 31
      WHILE @i > 24
      BEGIN
          SET @edt = RTRIM(YEAR(@dt))+'10'+RTRIM(@i)
          IF DATEPART(weekday,@edt)=1  
          BEGIN
              SET @i = 24
          END
          SET @i = @i - 1
      END
       
      -- subtract hour from offset if within DST
       
      IF (@dt>=@sdt AND @dt<@edt)
          SET @offset = @offset - 1
       
      SELECT @dt AS CurrentTime, DATEADD(hour, @offset, @dt) AS UTCTime

 
0
 
LVL 31

Expert Comment

by:RiteshShah
ID: 24771211
can't you use something like, find difference between your time and UTC time and add those time difference to your own dateField?

DateAdd(minute,DATEDIFF(minute, GetUtcDate(), GetDate()), YourDatefield)
0
 

Author Comment

by:silchester
ID: 24771258
Sorry guys, do not think I explained this well:

I do not want to convert the current time to UTC.

I want to convert an arbitrary smalldatetime into its equivelent UTC.

So not wanting to refer to the current time at all, that is why the getUTCDate() function is not applicable.

So, want the UTC of for example: '9/22/2009 1:25:00 PM'

Hope this helps
0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 
LVL 31

Expert Comment

by:RiteshShah
ID: 24771267
eventhough this will work,


select DATEADD(MINUTE,datediff(MINUTE,GETDATE(),getUTCdate()),getdate()),getutcdate()
0
 
LVL 31

Accepted Solution

by:
RiteshShah earned 500 total points
ID: 24771271
look at this:


declare @dt datetime
set @dt='9/22/2009 1:25:00 PM'
--select @dt
select DATEADD(MINUTE,datediff(MINUTE,GETDATE(),getUTCdate()),@dt)
0
 

Author Comment

by:silchester
ID: 24771380
Hi Ritesh

Ok, I have entered your code into SQL 2005 Server Express SQL Query.

I must be being thick. But the results column shows :

2009-09-22 13:25:00.000

I was expecting an integer representing the number of seconds since midnight. I am just looking to see if I have to alter the results format....

I tried:

declare @utc_result AS bigint

SET @utc_result = <select DATEADD........ >

No luck...
0
 

Author Closing Comment

by:silchester
ID: 31599508
Hi Ritesh
I reckon my question title was misleading - i am not bothered about localtime. so will close this question and ask a new one.
many thanks
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

Suggested Solutions

Title # Comments Views Activity
SQL Select - column value lookup. 3 40
Nested cursor  in SQL 9 94
Updating a column using a lookup on another table. 6 16
Extract string portion 2 10
Use this article to create a batch file to backup a Microsoft SQL Server database to a Windows folder.  The folder can be on the local hard drive or on a network share.  This batch file will query the SQL server to get the current date & time and wi…
This article shows gives you an overview on SQL Server 2016 row level security. You will also get to know the usages of row-level-security and how it works
Via a live example, show how to shrink a transaction log file down to a reasonable size.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

930 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

14 Experts available now in Live!

Get 1:1 Help Now