access 2007 randomize

I am trying to create a randomize function in access2007.  I would like to run a query to return 100 rows from my table. I would like query to the table an get a different result set  everytime i run the query.  Help is needed.  I am including the database i have started.
centralmikeAsked:
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.

aikimarkCommented:
If you add a column to your query, you can simulate randomness via the VB pseudo-random number function, Rnd().  Pass it the row's key value.
Example:
SELECT ID, Rnd([ID]) AS RndSortValue
FROM MyTable
ORDER BY Rnd([ID]);

Open in new window

Be aware that the VB PRNG functions are flawed.  I wrote an analysis in this article:
http:A_11114.html
0
centralmikeAuthor Commented:
The random number columns changes.  But it returns the same 100 rows each time you run the query.
0
DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
Here is an example that avoids the issue above - which I've used many times:

SELECT TOP 100 tblEmp.EmpID, tblEmp.EmpName
FROM tblEmp
ORDER BY Rnd(Replace(TimeValue(Now()),":","")*[tblEmp].[EmpID]-Now()*[tblEmp].[EmpID]);
mx
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
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
Another similar example:

SELECT TOP 10 tblEmp.EmpID, tblEmp.EmpName
FROM tblEmp
ORDER BY Rnd(Int(Now()*[tblEmp].[EmpID])-Now()*[tblEmp].[EmpID]);

mx
0
aikimarkCommented:
@mike

Please post 20 of your ID values.  I'm not seeing that behavior with my table/query.
0
Gustav BrockCIOCommented:
You will if you close Access and open it and run the query again.

/gustav
0
DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
Guaranteed to not be an issue if you include Now() as shown in my examples.
0
Gustav BrockCIOCommented:
Yes, this is a great tip.

/gustav
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 Access

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.