Update Column Valu With Random Number

Mar 24, 2005

hello all
I am trying to set column values to a random number between 3 and 5

PMRatingTokenID: textH1: doubleYearID: textCode:UPDATE PMRating SET PMRating.H1 = (5+3-3)*Rnd()+3
This shows type mismatch error . What is the problem here..


please do help...Thank you

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May 27, 2014

Is it possible to run a SQL command to update a field within a table with random numbers?

More specifically - random long integers linking back to an ID (autonumber) field in another table?

Background to this is, I have multiple static data tables related to each other by long integer identifiers (autonumbers)

The structure is fine but I haven't been provided with the actual data yet - but for development purposes, I need to work on other functionality which requires that this data be present.

So I want to fill my table with dummy data such that I can go off and work on the remaining functionality, but then just go back and clear it all out once I get the actual data.

I have one 'main' static table, which links back to other tables, which I have already populated with dummy static (i.e. company names, locations etc) Now I want to go into my main table and populate those fields in each record with a random ID. I don't mind doing this field-by-field (there's only a handful) but I've a lot of records in there (~1000) so I'd rather not do this record-by-record.

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Hello,

I have this query:
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Feb 13, 2006

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I have tried to use the following in the OnClick field, doesnt work

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rn2j

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Any help will be very much appreciated!

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Anyway, here is what I am looking to do:

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I would like to have this linked into a button click.I am hoping there is an easy way to accomplish this task.

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Jun 2, 2015

I have a log in screen that my users must use before they can use my db. if they enter the wrong username/password they get the usual message boxes. I also thought it would be a nice personal touch if once they've logged in they get a little greeting, so i made a message box that says "Hello " followed by their first name

This did the trick for a while, however theyre sick of seeing "Hello" and want other greetings, i figured this wouldnt be too complicated and took me only about 10 minutes or so to implement.

Basically i created a table (tblGreetings), has two fields, an autonumber field (ID) and a short text field

I've added the following code into the login sequence:

Dim greetings As Integer
Dim greet As String
Dim randomNum
greetings = DCount("ID", "tblGreetings")
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which in theory should generate a random number between 1 and "greetings" (which is an integer representing the number of greetings ive stored in my table), currently greetings=9

then it should pick a greeting from tblGreetings using the random number as an ID

This more or less works, except whenever the DB is opened and a user logs in, the "random" number is the same every time, it always seems to be 7 (which corresponds to the greeting "G'day").

Why this random number is always the same? it changes if i run the code a few times in the same session, but once the database is closed and reopened it still gives off the number 7, every time

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My company does daily, weekly, and monthly drawings using mountains of entry tickets and a barrel that has seen better days. So needless to say this system has to go. I hope to be able to do it digitally.

I would like to do a random number generator to pick the winners based off of a ticket number range. The ticket numbers issued to the customer would correspond to the customer account number. To complicate things I would really love to have the random numbers displayed on the screen so people feel they are watching the randomization pick in progress with the winner name popping up.


I have searched Help for Rnd function, as well as googled. I haven had any luck finding what I need. Is what I am looking to do possible in access? I had something similar in Excel a few years ago but lost it.

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Jul 25, 2006

This is my first post. Please help me.

Here's my DB :

Status : Number (Long Integer)
Random : Number (Double)

If Random value is around 0-0.9, the status value is 1
If Random value is around 0.9-1, the status value is 0

Here's my Query :

UPDATE DB Set Random = RND()

Rnd() give random value, but each records have the same value,
let's say 0.71212154

How can I update all records with random value,
with a single query ?

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Hi.
I have major report due within hours.
I need to add a field to existing table that will be a 9 digit number, non duoplicating or - to take an existing field of 9 digits and allow it's values to change to random or incremental, non-duplicate numbers of 9 digits. I already have an autonumber field I must keep.

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Any way to have a beginning number that I would enter into a text box and have the number generator kick off based off of that number. I have included a copy of my db for viewing.

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Jun 21, 2013

Have a table (tblDailyResults) with 4 fields (ID,TestName,Result,TestDate). It contains a snapshot of about 1,000 records. All fields have data except "Result", which is null. I also have a table (tblResults) with 3 fields (ID,TestName,Result), it contains about 100,000 Records of historical results. What I need to do is Update the "Result" field in "tblDailyResults" with a randomly select value from tblResults where the two testname match.

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Jul 31, 2013

I have a form which allows the user to add new records to a table. After the user had entered all the information into the form, they click a command button to add the record. In addition to adding the new record, my command button runs an query which is supposed to generate a random number between 1 & 1,000,000,000 and update the record ID field with that number.

Here is the formula I have been using in the "update To" now of my query: Int((1000000000-1+1)*Rnd()+1)

My problem is that I keep getting duplicates. You would think that the chances of getting a duplicate number would be pretty small with this large of a range, but I get a duplicate almost every time.

I have tried indexing (No duplicates) the field in the table, but that did not work. When my query generated a duplicate number, the record was just not added to the table.

I also tried a two step approach:
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2-Update new record with a random number that is not in tblIdNo

This was a no-go too

How to build an update query that will update each new record added to the table with a random number between 1 & 1,000,000,000 without any duplicates? This seems like it should be so simple, and I am starting to get really frustrated.

I would prefer to accomplish this through a query/queries (if possible) rather than with 100 lines of code. This database is not for me, it's for another group, and the individuals in this group are totally freaked out by code.

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I'm trying to create a query that generates random numbers for each record, sorts them by that field, then selects the top record. This should randomize the record being selected.

I can use the Rnd([ID]) function which does appear to generate a random number. Problem is that each time I exit the program and come back in, it always selects the same record. When I remove the Top = 1, to show all the records, every row does have a different random number but it does not appear to be sorting by this field.

If I run the query, here is the number I get: 0.98609316349029

Exit the program, restart, and run the query again: 0.98609316349029

If I refresh the query, the second and third time does appear to be random but the first result is always the same. how to generate truly random numbers?

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Right now, all I've done is place an equation in the default value of a textbox I have on my 'Add Account' form. I then made the control source of the text box the Account ID field. My equation is as follows:

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This appears to work, as it generates a value in the correct format. However, I've realized that each time I open the CRM, the random numbers start over again and I run into issues of trying to create a new record with the same ID as a previously created record. I assume I need to incorporate some sort of timestamp to it in order to change it.

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Hello Everyone,

Im trying to make a query which will allow me to run a query update so that all my listings will get a new random number generated for them,

Ive got it selecting any listing with a ID of >0 (so basically thats all of the listings)

What id like it to do is then assign a random number to the randsort field, (prefer a number like 0.812 or 0.342 etc etc)

To start with ive tried using the Rnd feature, but its updating all the listings with exactly the same number (though granted the number changes each time the query is run)

I see in some of the other comments regarding rnd that you may need to put a randomize statement somewhere,

Im very new to programming in access and was just wondering am I on the right track, and if so where abouts should i declare the randomize code since its in a query?

Thanks for your time and look forward to your replies
Cheers Ezy

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DEST,ORIGIN1,ORIGIN2,ORIGIN3,ORIGIN4, ETC
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