How do Return a unique number from a datetime field in sql 2008

Hi Gurus

I am pulling my hair out.  How do i return an integer that is unique based on date AND time from a date time field.  The value currently in the datetime field which is called datetimsubmitted is '2010/09/03 10:18:05 AM'

It is easy to return an integer from the date only but each record needs to be uniquely identified by an integer based on date and time to the second
many thanks
Alan
caandalAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Mohit VijayCommented:
If you want to return a BigInt, based of DateTime value, that will be always unique

use

CAST(Convert(VARCHAR(50), GETDATE(), 112) + REPLACE(Convert(VARCHAR(50), GETDATE(), 114),':','') AS BIGINT)

To Test it write

SELECT CAST(Convert(VARCHAR(50), GETDATE(), 112) + REPLACE(Convert(VARCHAR(50), GETDATE(), 114),':','') AS BIGINT)

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
cyberkiwiCommented:
How about seconds from date 0 (1900-01-01) ?

convert(bigint, convert(float, datetimesubmitted)*24*60*60)
0
cyberkiwiCommented:
Or the Unix timestamp, which is number of seconds from 1970-01-01 12:00am

convert(int, (convert(float, datetimesubmitted)-convert(float, convert(datetime,'19700101')))*24*60*60)
0
caandalAuthor Commented:
Hi VjSoft
Thanks - I was one bracket away from the right solution and then chucked it out
Alan
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2008

From novice to tech pro — start learning today.