Duplicates In Table/Query

Aug 1, 2007

I am using a combo box to assign gun numbers on an employee form (frmemployees). I also have a query listing only the gun numbers that have been assigned. When I select a gun from my combo box, I what to evaluate if it is already on the gun assignment query. That way I cannot assign the same gun to two different people. I am using the before_update event to do this. The code that I am using is as follows:

Private Sub intgunNumber_BeforeUpdate(Cancel As Integer)

If DLookup([intgunNumber], "qrygunassignmentcurrent", Me.intgunNumber) = Me.intgunNumber Then
MsgBox "Item # is already listed.", vbOK, "DUPLICATE FOUND"
Cancel = True
End If

"me" represents my frmemployees form. The problem is that it's causing an event even for the numbers that aren't listed on the query. I am trying to get the evaluation correct but am having difficulties. All the fields are numeric fields. :( :mad:

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Find Duplicates And Create Table With Dates Of Duplicates

Feb 12, 2008

Hi this is my first post... so hi all :)

ok what i have is a table with contact details 900k plus

there are about 90k of which are duplicates.

this is the basic feilds that are important in this case.

Id, data_source, data_recived, data_code,

what i want is to have a table with unique records (no dups in data_code)

this table will look like this...

Id, data_code, Num_dups, dup1_source, dup1_date, daysbtw_Dup1_dup2, dup2_source, dup2_date, daysbtw_Dup2_dup3 ,dup3_source, dup3_date, daysbtw_Dup3_dup4 ,dup4_source, dup4_date,

I know there is no more than 4 dups of each record.

what i want from this is a table that will give me a record of how many dups for each record then all the dates that they were added and the date between each record entry.

if anyone can help it would be great .

thanks in advance.

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May 19, 2013

I have two tables, Table Products & Table Sold and I'm trying to aggregate the products table to reduce the total number of products and I want this update to happen with all tables that share a 1 to many relationship with the product table. (table sold is one of those).I have products apple, pear, bananna. I am now aggregating them to all just be called fruit. Problem is when I make this change in the product table I get this error:

"The changes you requested to the table were no successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again."how to go about aggregating data in a table that has 1 to many relationships with many other tables. A

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Dec 10, 2007

Why would the Idexed change from "Yes (No Duplicates)" to "No" while data is being entered in a form?

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Jan 11, 2005

How do I make a table from another that will only display the duplicate records in a field .... I have add'l fields in addition to the partno but not relevant.

i.e. partno new table will show:
0001 0001
0002 0001
0001 0003
0003 0003
0003

Thanks for your help....

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May 19, 2005

Hi Everyone, I need help in selection of primary key and designing of a tables. I am having a table called Current trailers with Trailer number as a primary key. I have similar table to current trailers called history table in which the trailers that left the yard are stored. As a trailer can enter and exit the yard couple of times in a week, its not letting me to have duplicates in the history table.So can anyone help in selection of primary key for the history table. Or can anyone tell me how I can have duplicates in a table.

Thanks in Advance,
Naveen

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Duplicates Records In Table

Mar 30, 2007

Hi

I want to amend my query so that all duplicate records don't appear. For example when the query is run the information generated includes:
Day the audit took place
Room the audit took place in
Faculty the activity belongs to
Staff lecturer(s) who takes the class
Activity that was going on when audit took place
Start time of Activity
Finish time of Activity
Counted number of people in the room

Therefore, if there is an activity going on for a faculty but there is more than 1 staff name against it, I just want 1 record to appear against that faculty. Whereas what is happening for example is that there is a activity which takes place from 3pm to 4pm and the activity belongs to the Faculty of Computing and Engineering, and as the class was taken by 3 different lecturers, 3 separate records appear. I am concerned about this because the information is then used in a summary report for each Faculty for the year, so in this case the summary report will calculate 3 activities when it was just 1 activity.

It would be great if its something I could just amend in the query, and not in the source table.

Much appreciated

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Aug 19, 2004

Hi,

I'm running MS Access (2002 SP-2)

I have a table that has the following columns in it:

Sent NBR (text) / Sent Date (date/time) / PIC (text)

It's a customer listing of our customers and which long distance carrier they have selected. Unfortunately my data also shows OLD customers that no longer own that phone number. Because of this, various phone numbers are listed numerous times, but only the Sent NBR with the most current Sent Date is the one I need to see. The others are irrelevant and need to be deleted. I'd manually delete the duplicated Rows but I have over 115,000 duplicates!!


Do you guy know of a way to eliminated the duplicates for each Sent NBR and only show me the Sent NBR's with the Most current date?

Any help would be greatly appreciated!

Scott

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Jan 30, 2008

Hello,

In access 2003 i have an external Oracle table named EXT-COM_EXTRA_DATA_FIELDS
in this table I have the following fields: COM_DATA_KEY, COM_DATA_FIELD_NO, COM_DATA_VALUE

From this I have created a query named: LOOKUP-BARCODES-10 this looks at the above table by filtering the
the records on the field: COM_DATA_FIELD_NO where this =10.

Also I have created a second query named: LOOKUP-BARCODES-20 this looks at the above table by filtering the records on the
field: COM_DATA_FIELD_NO where this =20

Below is sample data in the table:

COM_DATA_KEY; COM_DATA_FIELD_NO; COM_DATA_VALUE
009A/s 10 03010303165001
009A/s 20 04350309115002
010B/P 10 05150909116001
010B/P 20 06150909116002
011C/X 10 07281809217003
011C/X 20 N/A


The problem is i would like to combine the numbers in the COM_DATA_VALUE field for the same product (ie the same COM_DATA_KEY
record) on the same rows without any duplicate records as shown below:

COM_DATA_KEY; COM_DATA_VALUE; COM_DATA_VALUE (2)
009A/s 03010303165001 04350309115002
010B/P 05150909116001 06150909116002
011C/X 07281809217003 N/A

As you can see from above some records only have data in one COM_DATA_VALUE (like 011C/x) where COM_DATA_FIELD_NO = 10 but no
data for the same product where the COM_DATA_VALUE = 20.

Im thinking maybe i can create a new join query that looks at the above two query’s and combines the values in the COM_DATA_VALUE for
the same product onto the same record row but im not sure how to go about this without creating duplicates & its been some time since ive done joined queries. Any help would be great?

ive attached a cut down version of the database with the table imported from oracle rather than being linked to oracle if this helps.

Thanks

Kevin

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Aug 8, 2005

hi, I have 2 Tables: tablea & tableb. The field names in both tables are: user_id, firstname, lastname, from these i have 2 querys (querya & queryb) both of which just look at the fields from the repective tables, & from this i have 1 form (entry form) that pics up the fields from querya. I would like to be able to enter details (records) into the entry form which puts all the data into tablea then automatically copies all the information into tableb, then automatically checks to make sure there are no duplicate records in tableb and finally deletes all the records out of tablea (probably after the form closes). This might sound a bit strange why i want to do this but I hope if its possible it could be used in a larger database.

I think i need to do querys but not sure what I need to do, Any advise would be very helpful.

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Aug 15, 2013

Access 2007 - I am using the oft used, frequently posted and shard code from srfreemen - modified as below. now I know I sort of broke commandment # 8 - Thou shalt not copy and paste other people's code without at least attempting to understand what it does. but I honestly did try to understand what it does.

I keep getting runtime error 3078 - cannot find the input table or query 'tblEnrolment_Committee_Master'. It is the name of a table in my database but I am missing the very basic element of how to get my form (which draws all of it's fields from that table) to look it up or identify it.

Likely because of a silly basic error. Normally - I wouldn't attempt such things but my work needs me to ensure no duplicates exist in this case AND it's already a primary key - but I don't want to wait until the whole form is filled out for it to identify the duplicate!

How to get the tblEnrolment_Committee_Master to be included in the search and erase this error ...

Private Sub Entitlement_File_Number_BeforeUpdate(Cancel As Integer)
Dim SID As String
Dim stLinkCriteria As String
Dim rsc As DAO.Recordset
Set rsc = Me.RecordsetClone

[Code] .....

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Jun 11, 2013

I have a table called Stock Levels which contains 3 fields. (ID, ProductID, StockLevel) ID is the Pkey, ProductID contains duplicates and StockLevel which contains different stock levels

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what I have done is the following, but I am still getting duplicate values in productid and stocklevels

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I have attached a screenshot of the table

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May 13, 2015

I am trying to loop through a table and count the duplicate records only once. Please see the attached file.

1) In the test table, I want to loop through all pt_accts.

2) In the countable column, if an acct repeats, I essentially just want to put "1" in one of the records. For the non-repeating accts, putting in a 1 is sufficient. Basically, I just don't want to count the duplicate ones multiple times.

In the example, acct "aaa" repeats, but there is just one "1" in the countable column. "eee" repeats as well, but there is just one "1" and the rest is 0.

Is this possible via VBA?

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Feb 6, 2014

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Aug 15, 2013

Is it possible to make a calculated field in a table not allow duplicates?

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Mar 12, 2015

I have two tables, tblCandidate and tblNewHire. I am trying to transfer candidates to tblNewHire based on the date they are hired. However, I would like the database to skip any records that are already in tblNewHire, just in case someone inadvertently puts in the wrong date when running the query.

I created an append query (SQL below) but this enters the data regardless of duplication. I need to be able to check both SSN and LastName against the new table and can't set either one to be unique values as it's possible there could be two candidates with the same last name.

Any way to do this by creating a recordset and looping through to check for dupes.

INSERT INTO tblNewHire ( SSN, FirstName, MiddleName, LastName, Phone, Email, EOD, HiringMechanism )
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Jun 29, 2014

I have a report with 2 access tables (1 Master table and another a daily feed table)

The Master table keeps a log of all incoming records. (once append it to this table, should not show in future reporting)

The Daily feed information within the last 48 hours. (uploaded from an excel report into access temporary table)

When the daily feed table gets completed, I append the records and updated them into the Master to avoid duplication.

When I upload the daily feed table and I match it against the Master table to find duplicates, how can I delete the duplicates from the Daily Feed table?

This is my code to find duplicates:

SELECT CMPreport.ID, CMPreport.MbrName, tblMaster.ID
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Dec 8, 2005

Hey, all! Thanks for helping, here is my situation.

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I'm using Access 2000 on XP Pro.

If anyone could help with this I would greatly appreciate it!

Thanks

Will

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Aug 23, 2005

I have a table in a healthcare patient database that stores Admitting Number, Scan Number, Last Name, and some other fields detailing the scan. Each patient can have multiple scans and I'm trying to design a query that lists how many scans each patient has had by finding all the duplicate admitting numbers. I'm using this SQL statement:

SELECT MultScans.Admitting_Number, Count(MultScans.Admitting_Number) AS Num_Of_Scans
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GROUP BY MultScans.Admitting_Number
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Apr 4, 2006

Please help. I am having difficulty understanding why a subform is showing duplicates despite using SELECT DISTINCT for its query. I have looked all over the forum but am still quite confused.

I think my database is normalised but this may be the problem and can attach it if necessary.

My query is as follows

SELECT DISTINCT StudentAndCourse.ClassID, StudentAndCourse.LevelID, StudentAndCourse.StudentID
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May 1, 2007

Hello,
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Mar 25, 2008

Hi everyone.

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Mar 26, 2008

I've been researching and reading about how to eliminate duplicates in my Query, but all the suggestions don't seem to work. Here is my problem:

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I've tried typing "DISTINCT" after "SELECT" in SQL, but that didn't do anything. I've also tried changing the "Unique Values" to YES, but that didn't work either.

Sorry if it's unclear, but I am very new to Access! :(

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Nov 24, 2004

Hello
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Jan 9, 2006

Friends,

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Dec 7, 2007

Hi All,

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Sample data as follows:

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e.g.

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-------------------

Dear Mrs B

Your Students are:

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