Preventing Duplicate Records

Aug 11, 2011

I have two different fields in a table. Month/Year and Location.When a user is entering data in a form, I want a message to be displayed if the location AND month/year are the same to tell the user that they are entering a duplicate record. I can't put unique keys on either of these fields because there is going to have to be duplicates in each field.

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Modules & VBA :: Preventing Probable Duplicate Records

Jun 21, 2013

I have a table called tblCompanies in which I have a field called CompanyName that is indexed set to "no duplicates". However, I want access to be able to pick out probable duplicates instead of only exact duplicates.

So, for example, if "Butter Fingers" is entered and "Butterfingers" is already in the database, I want access to prevent the new record from being created.

The code I found on MS Developer's reference only prevents exact duplicates which seems pointless since this can be done just as effectively on the table level using an index.

Anyway, here is the code:

Private Sub CompanyName_BeforeUpdate(Cancel As Integer)
If (Not IsNull(DLookup("[CompanyName]", _
"tblCompanies", "[CompanyName] ='" _
& Me!CompanyName & "'"))) Then
MsgBox "Company has already been entered in the database."
Cancel = True
Me!CompanyName.Undo
End If
End Sub

Can it somehow be modified to do what I want it to do?

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Preventing Duplicate Records Involving Null Values

Jul 22, 2005

I have a table with a multi-field unique index:
PatientID
TestId
TestDate
Examiner

The problem is, date and/or examiner can be blank until that information is updated. I want those null values to be understood as actual values so that multiple instances of that "waiting to be updated" record do not occur. Is it possible for Access to understand my indexes in the following way?

PatientID----TestID----TestDate----Examiner----(Index)
1------------1---------07/18/05----AD----------1107/18/05AD
1------------1---------[blank]------[blank]------11

and therefore not allow another record like the second one to be added? The ignore nulls property of my index doesn't seem to affect this issue?

Thanks!
Carly

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Preventing Duplicate Records Being Entered (Double Bookings)

Oct 24, 2006

I have a form which allows the user to book rooms.

On this form, there are the following fields:

BookingID: (Autonumber)
RoomID: Text box
Time:Text Box
Date: Text Box
Class: Text Box
Teacher: Text Box

The form adds this information to the Booking table.

What I'm looking to do is prevent the user from double booking a room,like being able to check if the Room is already booked at that time and date, before the new information is added to the table and the room becomes double booked.

Basically this would be checking the RoomID, Time and Date fields, as everything else is irrelevant. What would be the best way to do this?

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Preventing Duplicate Entries.

Nov 26, 2006

Hi again, thanks to all for the help given so far.

Is there anyway (other than making that field a primary key) to prevent the same value being entered into a different record?

E.g.

If under 'Name' Radion has already been written, I want an error message coming up saying there is already a record with radion.

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Preventing Duplicate Entries

Aug 2, 2006

Hi all,
I am currently using this code in the before Update event of the Surname Textbox on a form. The first Textbox is FirstName.
The second one is Surname.

************************************************** **

If (Not IsNull(DLookup("[FirstName]", _
"Employee", "[FirstName] ='" _
& Me!FirstName & "'"))) And (Not IsNull(DLookup("[Surname]", _
"Employee", "[Surname] ='" _
& Me!Surname & "'"))) Then
MsgBox "Someone already exists with the same name! Please check for duplicates", vbCritical, "IPDMS"
Me.Undo
End If

************************************************** **

However once the user has entered the surname and tries to save the record the MsgBox is coming up.
Basically what is happening is the first name is coming up as the duplicate entry only.
I need to prevent the whole name (first name and surname together) from being duplicated.

Thanks if you can help me.

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Preventing Duplicate Record Entry

Aug 23, 2006

Hi all,

I created a form for entering employee skillset in Accounting.

I have set up three fields - one for Primary Skillset and the other two for secondary skill sets -

The skillsets are -Payables, Receivables, General Ledger, Purchasing etc.

How can I ensure that a user will not enter duplicate values in the three fields.

That is a user will not enter for examply "Payables" in the Primary Skillset, and Secondary Skillset fields.

I tried creating a multiple field index but it does ont appear to work.

I will appreciate all the help.

Thanks

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Forms :: Preventing Duplicate Entries

Mar 7, 2014

I am attempting to make a system where the lifespan of baskets in a production process can be tracked. In order to do this I am looking to create a form to input when a new basket is introduced.Each basket has a 'disc' associated with a number on (BasketNumber), however these discs are reused once the basket breaks which is making it more difficult.

I have a form (Add_New_Basket) which feeds into a table (Active_Basket); what I am trying to do is make sure that a new basket cannot be introduced with the same disc number as an active basket. The way I am trying to determine which baskets are active is that I have an end date, that is filled in once the basket has been scrapped.

Therefore I am trying to set my Add_New_Basket form to restrict me entering a new record with BasketNumber 999, if there is already a BasketNumber 999 in the table with 'EndDate' null. If there is BasketNumber 999 and EndDate is dd/mm/yyyy then it can create the entry.My form Add_New_Basket has fields ID (which is hidden), BasketNumber, StartDate (=Date()).My table has fields: ID, BasketNumber, StartDate, EndDate

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Preventing Duplicate Part Number As Idfr

Feb 24, 2007

I have a fairly simple database we are using for keeping inventory and new items get added through a form. Is there A way I can prevent a part number and its properties from being entered if that same part number has already been entered at an earlier point in time?

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Preventing Duplicate Data From Multiple Fields

Mar 4, 2008

Hello All,

I'm trying to limit the data entered into a specifc field, but also the data must be unique with respect to other fields.

i.e.
Two fields: System A & System B.
Data entered into System A, can not be entered into System B.

Anyway to prevent this from recurring?
Would I use a validation rule?

Thanks in advance

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Preventing Duplicate Selection Of Combo Box Values

May 5, 2014

I am working on a database to track IT assets with third parties. I have a table called "Equipment" that includes info like model, serial numbers, purchase price, date, location, and "Asset ID". I have a second, single field table called "asset tag" that is just a list of asset ID tags, XYZ1000, XYZ1001, XYZ1002..

I created a one to one relationship between the two tables on the following fields: "equipment.assetID" and "asset tag.asset ID"

Once an "asset ID" is used, I would like it to either be grayed out or disappear from the list of available ID tags. Basically, I want it so that each "asset tag. Asset ID" can only be used once.

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Forms :: Preventing Duplicate Entry In Names In MS Access

Apr 15, 2013

I want to stop duplicate entries from being entered on form. I have read through the thread , however I am totally confused as it seemed to be v high level complex queries. I am looking at:

Preventing duplicate entries to be entered

It should show an error "Saying entry already exists" Do you want to check,edit or add new...

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Forms :: Preventing Duplicate Entry In Unbound Form

Aug 13, 2014

What is the code for displaying warning message when enterenig duplicate information in unbound form in BeforeUpdate event procedure.

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Preventing Multiple Records Or Using ComboBox

Feb 22, 2005

Hello everyone.
It has been many years since I played with this stuff and I probably wouldn't be now, if not for an emergency.
I know there is probably an example here that all ready explains what I need, but honestly, I am not real familiar with the terms and wouldn't know where to begin looking for it.

I am old and don't intend to make a career out of this, I just need to fix a database. We had a bookkeeper at our small business who, for years, maintained our mailing list. It was her own design, though she knew nothing about it and learned as she went along. We never interfered because she did her job flawlessly in her own little, confussing round-a-bout way.
She is gone now and we have to make heads or tails of this. We decided the quickest and easiest way was to blow the old db away, use as much of the basic fields that we could sacrifice and start over. It's just a simple mailing list, but it contains over 9000 records.

Her method of entering records was from the table view. Yep, starting a new line at the bottom of the table and then entering the 94 fields of information that applied to the new record.
I have created a form today that does this now and simplifies this process.
Her method of preventing multiple records, was to scroll down the table and see if she had already entered the record previously. This is my question.

My first approach to resolving this issue in my new form, was to create a ComboBox on the form to do a lookup using Last and FirstName. Due to the fact that this ComboBox will need additional fine tuning that I don't understand, when I use it, it does auto-complete the last name "Anderson" as I type it and it highlights the first "Anderson" record in the db, but It doesn't do any sorts in this same ComboBox to bring the rest of the "Anderson" records to the top so I can then check for a matching FirstName. I'm sure this requires changes in the property of the ComboBox that I don't understand.
Or, maybe I shouldn't even be using the ComboBox.

Actually, I would bet there is a way that I can alter my table so that it would not allow me to put in a duplicate record and therefore, eliminating the need to even look anything up.

Any ideas or direction with this would be greatly appreciated. Since I am only the person creating this and not the person(s) that will actually be using it, I should find a method for this that will be simple for anyone adding records.
Hopefully, in a day or so, I can be done with this and get back to my real job here as a mechanic, not a programmer. :eek:

Thanks again in advance.

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General :: Booking Form - Preventing Double Records

Dec 2, 2012

I am new to Access and have made a database for a shuttle company that keeps track of their bookings. I need to prevent from the same booking being entered twice. I have a "Booking Form" that was made from a table "Master List". I was wondering if there was a way to compare three of the fields and if they match then a error would pop up.

I think if the "client's name", "booking date", and "pick up time" matched then a "booking already exists"... and also there are four different people can enter data and they have a log in form how can I get their "username" to be put into a field on the "Master List" automatically...

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Queries :: Mass Duplicate Main Records And Related Subform Records

May 29, 2014

In my simple database (attached), I need to mass duplicate Tasks and their Notes.

I have three tables: tbTasks (PK: Task_ID), tbNotes (PK: Note_ID), jtbTaskNotes (FKs: Task_ID and Note_ID). jtbTaskNotes is my many-to-many junction table that ties Tasks to Notes.

The main form (fmTasks), bound to tbTasks, has a subform (sbfm_TaskNotes) that displays notes associated with each Task. On themain form,you select which Tasks you want duplicated via a checkbox. The append query (quCopyTasks) will duplicate all tasks that have the checkbox checked. All good there. However, I can't figure out how to also duplicate each task's Notes.

I found Allen Browne's solution [URL] ....., but that only handles duplication of one record at a time, whereas I need to duplicate many records at a time (sometimes 10+ records). How do I go about duplicating multiple Tasks and their associated Notes?

Before you ask "why are you duplicating records?": There are times when tasks need to be re-accomplished and therefore need to have a new record. It's easier to duplicate records than it is to hand-jam everything again.

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Qry Results Show Duplicate Records, Records Are Not Dup In Table.

Nov 16, 2004

I have built a qry that initially shows the correct information. For example.

tblContent has 289 records with a Type = Class.

I built a Query to select from tblContent Type = Class and I get 289 records. I add additional criteria of Progress <>"Not Scheduled", I then get 206 records. I then add additional criteria Last Name <>"Demo" And <>"Care" And <>"Support". This brings up 200 records, but the query appears to duplicate each record 3 times. I do not have 3 of the same types of records.

The SQL Statement is below

SELECT tblProfile.LoginName, tblProfile.FirstName, tblProfile.LastName, tblProfile.Organization, tblProfile.CostCenter, tblContent.Title, tblContent.Type, tblContent.Code, tblContent.[Date Assigned], tblContent.[Date Started], tblContent.[Last Accessed], tblContent.Progress, tblContent.[Date Completed]
FROM tblProfile INNER JOIN tblContent ON tblProfile.LoginName = tblContent.LoginName
WHERE (((tblProfile.LastName)<>"Demo" And (tblProfile.LastName)<>"Care" And (tblProfile.LastName)<>"Support") AND ((tblContent.Type)="Class") AND ((tblContent.Progress)<>"Not Scheduled"));

The qry is named qryPhysical Class. I have provided the link to view the database. Can you help me?

http://briefcase.yahoo.com/turnerbkgabrobins

Thank you in advance for your assistance.

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Delete Duplicate Records Or Blank Records

Mar 19, 2007

I want to find duplicate records based on FirstName and LastName and delete the duplicate. Also, I want to delete any records which have a blank FirstName and LastName.

How can I do this?

Thanks,

Dave

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Duplicate Records

Jul 5, 2005

pls can someone point me in the right direction

have searched through the forums.

i have two fields Forename & surename i need to prevent duplicate records if the forename and surename match another record.

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Duplicate Records

Oct 24, 2006

Hi

I have a table (which is populated by people filling in a form) which contains two fields:

Section
WeekCom (e.g. week commencing)

I want to make sure that the form will not allow someone to make a double entry. For example, if Sally goes in and says enters "Benefits" as the section and "WeekCom" as 15/10/06, and then Ben tries to do the same - the form will not allow Ben to enter it.

How do you do this please? The table does not have a primary key at the moment....is there any way of doing it without setting one of the fields as a primary key?

Thanks

Maria

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Duplicate Records

Apr 9, 2007

I Need to run a query that will not show duplicate records.

For example if joe smith is listed five times i only want the most recent date of membership.

Does anyone have any ideas?

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Duplicate Records!

Apr 30, 2006

I have a form in Access which has event date and then also an event time slot such as "Morning, Afternoon, Evening" . I need to make it so that you cannot have a duplicate time booking, i assume i will need to code some VBA but if anyone could tell me what it would be much appreciated. Thanks

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Duplicate Records

Feb 7, 2008

i m new user to access i just wanna know how can i count duplicate recodes for example how many time
record repeat in one column


waiting for ur quick reply thanks

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How To Delete Duplicate Records

Apr 30, 2007

Hello,

I have a table that has many duplicate records. I tried importing the table and setting the field to no duplicates but did not work. How can I delete duplicate records. The primary Id id fine I have another field that I can use. it is a BAC number that is repeated many times. Here is the table I need fixed.

Thanks

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Random Duplicate Records

Feb 20, 2006

Hi Guys,

I hope someone can help with this. I have a table, "Blasthole Submission" which is populated by input in a form, using the code below:


Const MyTable As String = "Blasthole Submission"
Const MyField As String = "Sample Name"
Dim db As DAO.Database
Dim rs As DAO.Recordset
Dim intCounter As Double
Set db = CurrentDb
Set rs = db.OpenRecordset(MyTable)
For intCounter = Me.txtStartValue To Me.txtEndValue
rs.AddNew
rs.Fields(MyField) = "TP" & intCounter
rs.Fields("Submission #") = Me.SubNum
rs.Fields("Sample Type") = "Blasthole"
rs.Fields("XRF") = "True"
rs.Fields("LOI") = "True"
rs.Update
Next intCounter
rs.Close
db.Close
Set rs = Nothing
Set db = Nothing


What I am hoping to do is to place a random duplicate in the table, called, for example TP111152 DUP, approximately every 50th record. Is there any easy way of doing this?

Thanks in advance for your help!

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How To Prevent Duplicate Records?

Jan 13, 2007

i am using a textbox in the main form to transfer the Yr/Mth into the table. (refer to qp.zip)

now my problem is, how do i prevent duplicate records into the table?

e.g: currently whenever i scroll ard the months control in the form, i will get duplicate Mth/Yr into the table. how do i prevent that from happening?

i only want to have updated data inside the Mth/Yr table instead of duplicated Mth/Yr

Public Sub PutInMonthlyRecords()

Dim sql As String
Dim Db As DAO.Database
Dim rs As DAO.Recordset
Dim f As Form
Dim MthYr As String

Set f = Forms!frmQpi

MthYr = f("txtMthYr")

sql = "SELECT * FROM [tblQpiMonthly] WHERE (([tblQpiMonthly].[Input MthYr] = 'MthYr' ));"

Set Db = CurrentDb()
Set rs = Db.OpenRecordset(sql)


If rs.RecordCount = 0 Then
If (f!txtTotalPF) = 0 Then
Exit Sub
End If

rs.AddNew
rs![Input MthYr] = f("txtMthYr")
rs![Monthly TotalPF] = f("txtTotalPF")
rs![Monthly Rejection] = f("txtTotalAvoid")
rs![Monthly TotalAvoid] = f("txtRejection")

rs.Update

Else
If (f!txtTotalPF) = 0 Then
rs.Delete

Exit Sub
End If


rs.Delete
rs.AddNew
rs![Input MthYr] = f("txtMthYr")
rs![Monthly TotalPF] = f("txtTotalPF")
rs![Monthly Rejection] = f("txtTotalAvoid")
rs![Monthly TotalAvoid] = f("txtRejection")

rs.Update

End If


Db.Close

End Sub

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