Queries :: Update Field With Random Value?
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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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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Jan 2, 2015
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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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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Nov 30, 2006
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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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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Sep 27, 2005
Hi all,
I am not real sure whether or not this can be done with a query, but here goes.
I have a query randomly selecting the top 6 from a selected group.
SELECT TOP 6 tblConsortium.ContactID, tblConsortium.RandomID, patients.LastName & ", " & Patients.Firstname AS [Employee Name], Contacts.Company AS [Company Name]
FROM patients INNER JOIN (Contacts INNER JOIN tblConsortium ON Contacts.ContactID=tblConsortium.ContactID) ON patients.PatientID=tblConsortium.PatientID
WHERE (((tblConsortium.ContactID) In (SELECT ContactID FROM tblConsortium GROUP BY ContactID HAVING Count(*) <25))) And (((tblConsortium.PatientID)=Randomizer())=0)
ORDER BY Rnd(IsNull(tblConsortium.patientID)*0+1);
What I would like to do now is: The randomly selected Employees need to have a randomly selected TEST. There are only 3-Test to choose from. I have placed the TESTS in a separate table and entered 20 of TEST1, 4 of TEST2, and 1 of TEST3. I then set a query randomly shuffling these items. I need these TESTS to randomly be assigned to the randomly selected Employees above.
I would greatly appreciate any thoughts or help…
Thanks Enviva
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Jul 31, 2014
I have two tables, one table Data has member(SUBSCRIBER_ID) data including service rep(UserName). Another table ServCoord has data including service rep and their manager. What I am trying to do is pull 5 random accounts per service rep. I can pull 5 random accounts, but not per service rep. I have currently 77 service reps. Is there any way I can pull 5 random accounts per service rep? Here is my starting point so far.
SELECT TOP 385 [Data].SUBSCRIBER_ID, Rnd(1) AS Expr1, [Data].UserName, Rnd(Len([UserName])) AS Expr2
FROM ServCoord INNER JOIN [Data] ON ServCoord.ServCoord = [Data].UserName
GROUP BY [Data].SUBSCRIBER_ID, Rnd(1), [Data].UserName, Rnd(Len([UserName])), [Data].SUBSCRIBER_ID, [Data].UserName
HAVING ((([Data].UserName)<>"NULL"))
ORDER BY [Data].UserName, [Data].SUBSCRIBER_ID;
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Nov 3, 2004
I have a database that I took over for a small group (it has about 400 records), and they want to add a field for "Member ID", to use for member badges and whatnot.
A friend tried to help me by suggesting the "Change the starting value of an incrementing AutoNumber field" from the Access Help File, but I don't necessarily want incremental numbers, I just want a string of perhaps 8 numbers in no particular order, and obviously, unique to each record. I also don't understand how I can get that to work in pre-existing records...
So, what I'm wanting, in a snapshot, is:
83928475 John Smith 123 Any St
93827221 Mary Jones 678 Market St
19182734 Elvis Presley Graceland
etc...
I was thinking that perhaps a formula could be created in a query? Heck I don't know!
I only know enough about Access to be dangerous, so I appreciate anyone's help!
THANKS!
Matt
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Apr 19, 2005
First off, I want to see if this is possible. It seeems like it should be but sometimes I dream bigger then things allow.
OK... I have a form made in Access. There is a text field that I would like to be able to do the following:
If the field is null, a number will be randomly generated betwen teh values of 1 and 1500.
If the field is not null (we entered a number between 1 and 1500), then that field would be set to that number.
The field CANNOT have the same number given (we will only have 1500 records and want them randomly generated a number unless otherwise specified).
Can this be done? I made my attempt but it keeps failing no matter how I try and fix and such. I guess this is what happend when you haven't used Visual Basic in about 4 years.
PLEASE HELP! Thanks In Advace,
Tara (aka Bay)
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Aug 3, 2012
On an Access database, I would like an ID number to be generated randomly.
This ID number needs to be within the range of 11000 - 99999.
How is this possible?
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Jun 2, 2013
I'm doing a subquery to select the top 5 of products for each supplier. The selection needs to be done randomly on the products for each supplier. For this I have made the following query (based on Allen Browne's example):
SELECT tblProducts_temp.SupplierID, tblProducts_temp.GTIN
FROM tblProducts_temp
GROUP BY tblProducts_temp.SupplierID, tblProducts_temp.GTIN
HAVING (((tblProducts_temp.GTIN) In (SELECT TOP 5 Dupe.GTIN
FROM tblProducts_temp AS Dupe
WHERE Dupe.SupplierID = tblProducts_temp.SupplierID
ORDER BY RND(Dupe.GTIN) DESC)))
ORDER BY tblProducts_temp.SupplierID, tblProducts_temp.GTIN;
The query returns a random number of products, but not a top 5. So for supplier X one time 3 products and the next time for supplier X 7 products.The query without the RND function, so just the top 5 works fine:
SELECT tblProducts_temp.SupplierID, tblProducts_temp.GTIN
FROM tblProducts_temp
GROUP BY tblProducts_temp.SupplierID, tblProducts_temp.GTIN
HAVING (((tblProducts_temp.GTIN) In (SELECT TOP 5 Dupe.GTIN
FROM tblProducts_temp AS Dupe
WHERE Dupe.SupplierID = tblProducts_temp.SupplierID
ORDER BY Dupe.GTIN DESC)))
ORDER BY tblProducts_temp.SupplierID, tblProducts_temp.GTIN;
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May 5, 2014
I have table with [EmployeeName] and [DateReceived] column what I am hoping to accomplish is to get 5 samples of each Employee for each Date received.
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Apr 29, 2015
I am trying to create a database to link to an online auction site (not ebay) and I want to create a query that randomly generates auction end time and auction length for all listings. I have tried int(rnd()) and various versions but can only generate the same number for all fields in the query.
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Aug 9, 2014
I am fairly new to Access 2013 but am trying to create a query that will select random records from three totally unrelated tables and display the results together as if one table -- think video slot machine wheels. Each table has two fields - ID which is the primary key and NAME. The data in the tables are names of states, names of colors, and types of animals. Each table has a different number of records. My end result is a table that selects X number of random records from each table and displays them side by side like this:
Desired Result:
Animal Color State
cat red Ohio
dog blue Texas
fox green Iowa
I have been able to create three individual queries that will pull X number of random records by using:
SELECT TOP 10 Animals.[ID], Animals.[Name] FROM Animals ORDER BY Rnd(-(100000*[ID])*Time());
SELECT TOP 10 Colors.[ID], Colors.[Name] FROM Colors ORDER BY Rnd(-(100000*[ID])*Time());
SELECT TOP 10 States.[ID], States.[LongName] FROM States ORDER BY Rnd(-(100000*[ID])*Time());
Using the three queries above I get three separate lists. how to make one query that will randomly pull from all three tables and make the display above?
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Jun 5, 2015
I have 3 fields:
CustomerID (Alpanumeric)
AttendDate (General Date)
Area (Alphanumeric)
Is is possible in a query to pull back 100 random CustomerID's on a set AttendDate. For example I have 1000's of Customers who attend each day, I want to do some Data Quality on 100 Random Customers.
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Apr 14, 2014
I have the following fields
[safetycheckdue] is a date field
[safetycheckfreq] is a numeric field
i need an update query to update the field [safetycheckdue] with the value in [safetycheckfreq]
when i run the query, it just shows the existing value with adding the numbers of days to the safetycheckdue date.
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Aug 26, 2014
I have an SQL table that uses bigint on the primary key field. When I lilnk this table into Access 2010, this table is not even visible because bigint isn't recognized by Access.I have a field on this SQL table that I need to update and I was looking at using a Pass Through query in Access. I have a query in Access that creates a list of records that I need to update.
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Jun 10, 2014
How can I generate a random string to a text field from a button. I
Say I have a form..
On the form I have:
X1 Button (BTN-Generate-Password)
X1 Text Field (TF-Generated-Password)
How can I make it so when the button is clicked a random string will appear in the text box
HTML Code:
Private Sub BTN-Generate-Password_Click()
(What Do I put here?) (Will it populate the Text Field?)
End Sub
- 9 Characters
- Upper and Lower Case
- Numeric & Alpha Numeric
- These Characters (!@#$%)
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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:
1-Make a table of all in use record ID numbers from my table (tblIdNo)
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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Jul 16, 2015
I'm trying to insert 10% of a dataset from dbo_billing into another table Random_Temp. Another form is open when this query is to be ran that passess in the billyear and billmonth... I'm sure it's a syntax issue as I can isolate the random number part and it displays the appropriate data, I just can't re-write it to insert into the other table:
INSERT INTO Random_Temp ( indx, peopleId, audited )
SELECT TOP 10 PERCENT b.indx, b.peopleId, b.audited
FROM dbo_Billing AS b
WHERE (((b.billYear)=[Forms]![billing]![billyear]) AND ((b.billMonth)=[Forms]![billing]![billmonth]) AND ((b.recertifying)=-1))
ORDER BY Rnd(-(1000*b.indx)*Time());
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Dec 16, 2013
I have a multivalue field containing values of A,B,C and D with primary IDs of 1,2,3 and 4 in that order.
If I was to run:
Code:
UPDATE Table
Set Table.Multivalue.Value = 1
WHERE Field 1 = "True" AND Field 2 = "True";
Then run
Code:
UPDATE Table
Set Table.Multivalue.Value = 2
WHERE Field 1 = "True" AND Field 2 = "True";
Will I have a Multivalue field as A,B or just B? I would like it to be A,B but I have my doubts as to whether this would work.
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Nov 21, 2013
Would I use an update query or function to complete my task?
Task: Automatically update [Status] based on DateDiff calculation of [RequestDate] and [DueDate]
Issue: [Status] can be one of 6 values, the user can manually select Review or Completed.
[Status] values: Review; Completed; Due in 24; Due in 24-48; Beyond 48; Over Due
Query: Below is the query I just started to ignore the calculation if either Review or Completed exist.
Expr1: IIf([Status]="Review",[Status],IIf([Status]="Completed",[Status],DateDiff('d',[RequestDate],[DueDate])))If the value from above DateDiff equals to the below, I want to update the [Status] field to the [Status] value.
Due in 24 = (0-1)
Due in 24-48 = (2-3)
Beyond 48 = (greater than or equal to 4)
Over Due= (-1)
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Jun 25, 2015
I am programming an Acess Database, the primary data come from an excel sheet. Since Access one to many relationship only works for primary key and another field in another table as foreign key, I can't have normalized database.
I will explain what I mean with a hypothetical situation.
So, let's say I have two tables: WindowT1, CustomerT2.
WindowT1 has fields: WinID (the pk), WindowName.
CustomerT2 fields include CustID (pk), CustomerName, WindowName, WinID.
So, in table "CustomerT2', WinID is the foreign key and I need that field filled in to make one-to-many relationship between these two tables to work. CustomerName and WindowName will be imported and prefilled already from an excel file with append query.
My question is can I make a update query (after the initial append query that brings in the data into Access) such that the criteria is matching WindowName (from CustomerT2) and the update would be the corresponding WinID (the pk number from WindowT1) that would be filled in the field WinID (in CustomerT2)? I know for this to work tables must have relationship and I did that.
Is there a better way to accomplish this task? i.e. through a form (remember info will be prefilled, so can't use combo box to fill in another form field) or maybe can I do this using the first append query (that brings in data)?
I am not good at Macro or VBA. The only thing I have done in code builder is After Update event in forms while using combo boxes. So, if there is no easier solution, I will try to deal with codes.
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Mar 27, 2014
i have two tables one is "empdata" and other is "consolidate data".In consolidate data ,i have all personal and salary data for one year of each employee but i update some employee data in empdata now i want to update each employee updated data to update in consolidate data. i want to do it with update query which run with form,is form i want create 2 combo box, 1st is employee name and 2nd is field name(which to be updated i.e. Date of birth)now i have one text box (in which i enter the value for update in employee data i.e.04/05/1976(date of birth)).how can i link this form to my update query as
1st combo box value is equal to creteria,
2nd combo box is equal to field in consolidate
and text box is value for updation...
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Jun 27, 2014
Why update query isn't working when trying to update an multivalued field. In this table, there are 647 records and only 9 of which already have a value set in the "AssociatedProject" field. More than one AssociatedProject is associated with a vendor, so this field allows for multiple entries. I've looked at all the information on update queries and updating a multivalued field, but it will only update the existing 9 records. It does not recognize the remaining ones (they have no values yet).
Here's the SQL:
UPDATE Tbl_Vendor SET Tbl_Vendor.AssociatedProject.[Value] = 3
WHERE (((Tbl_Vendor.AssociatedProject.Value) Is Null));
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