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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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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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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Oct 17, 2007
I have a query that will pull records, and append them to the table. The only problem is that not only will it pull all the "new" records, but also all the "old" records. I just want to append the records that are not already in the table. Any ideas? I have tried using the primary key, but then it dosnt import any records. There will be say 1850 records. And out of the 1850, 1 would be a new record.
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Aug 20, 2007
Ok.. I have been racking my brain for hours trying to figure out how to do this. Maybe someone here can help me figure this out.
I have 2 tables. "AR94" & "RPIN"
I need a query to look at the "Provider_PIN" field of both tables in order to find duplicates between that field in both separate tables at which point I need it to say If a duplicate provider_pin exists in the AR94 table & the RPIN table Then remove that provider_pin from the "RPIN" table.
The final result should be that the only records showing in the "RPIN" table would be those provider_pins' that were NOT found in both tables.
Starting Example (Before query):
AR94 Table:
-----------
1234
12345
123456
1234567
12345678
RPIN Table:
-----------
1234
4567
45678
12345678
456789
Results that should be achieved (after running query):
RPIN Table:
4567
45678
456789
Thereby deleting the 1234 & 12345678 values from the RPIN table leaving only records that were NOT found in both tables.
Please help me as I am trying to get this done for a project and can't figure it out..:confused: Thanks.
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Feb 27, 2014
I have imported a large number of emails into a table tbl_requests.
I had intended to have unique file tbl_requests.date_opened unique, but have ended up with a lot of duplicate records (i.e. tbl_requests.date_opened is not unique !). How to delete any duplicates? I have 15,000 records...
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Mar 18, 2014
I have two tables, one is of departments, and one is of people (with a FK denoting what department this person is in). Now consider the fact that there are duplicates in the departments table, and I would like to remove these duplicates. However, the duplicates have related records (in the people table). So, before removing the duplicates, I must update the FKs in the table of people (this is the step I'm having trouble with).
Here's an example:
As you can see, the "Sales" department is there twice. And both have a related record. What I want to do is:
Update all DepartmentIDs (in tblPeople) to not point to duplicate records. In this example, that would be PersonID 2; Joe. His DepartmentID should update to "1" (as both "1" and "2" are "Sales").Delete the duplicates in tblDepartments (in this case, DepartmentID 2, "Sales").
The second step is no problem, it is only the first I am struggling with.
Also, the example posted here is just an example, the data I actually need to do this for is significantly more complex and there are many more records! In the attached database:
qry1: Simple query to find all duplicates (just used the query wizard)
qry2: Just the first row of each duplicated departments (duplicates that shouldn't be deleted). In the example above, this would be the "2", "Sales" row in the tblDepartments table.
qry3: Basically all qry1 rows that don't appear in qry2
qry4: All qry3 values, and their respective qry2 value.
This is what each of the (soon to be deleted) duplicate values' related records' DepartmentID should be updated to... There's no simpler way to phrase that, so using the example above, qry4 would return "2","1". This indicates that all people with a DepartmentID of "2" should be changed to "1" (so we can subsequently erase the department with the ID of 2.
This is as far as I have gotten. My next step is: Update all FKs in tblPeople based on qry4 (You can't set an update query's criteria to pull from another query, nor can you use the second query for the update value... or maybe you can, but I don't know about it).
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Aug 13, 2013
I have a table that has multiple records (count >1). I used the find duplicate records and then made it a delete query, however, this resulted in deleting all the records that had count >1. I need to retain distinct record, and delete the extra records. Using select distinct.. I do not want to use VBA to achieve this, but at the same time be able to incorporate the steps in a module that would execute the queries in a sequential order and achieve the same results.
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Jan 1, 2015
Is there any way to highlight duplicates across a number of records on a continuous form (conditional formatting I presume)? My continuous form is filtered on load to show only the records relating to the specified date (specified before opening the form), and there is one field that I would like to highlight if there is a duplicate value in the same field on another record on the form. Is this possible?
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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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Aug 15, 2014
I am using the following code to check for duplicate tickets when importing multiple records into a datasheet view form by using the paste append function.
Code:
Private Sub Ticket_Number_BeforeUpdate(Cancel As Integer)
DoCmd.SetWarnings False
If DLookup("Ticket_Number", "Record_Store", "Ticket_Number= '" & Me.Ticket_Number.Value & "'") > 0 Then
Cancel = True
MsgBox "There were import errors, please open View Import Errors above."
End If
End Sub
The form is used to insert multiple records into the database at a single time.
That codes works to check for duplicates. And if there are none there are no popup messages.
If there are duplicates though it gives a popup for every single Ticket_Number that is a duplicate.
I am wondering if there is a way for it to give only a single popup once it completes checking all the records to be imported for duplicates.
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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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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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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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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
and I am trying to remove the duplicates and retain the the data so I am left with the correct stock number
what I have done is the following, but I am still getting duplicate values in productid and stocklevels
SELECT DISTINCTROW id, productid, stocklevel into mynewtable from stocklevels
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
Attached is my many to many relationship setup. I would like to prevent the possibility of entering the same person more than once for the same training event. I am assuming that I do this by setting an index setting for a field the junction table?
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Aug 15, 2013
Is it possible to make a calculated field in a table not allow duplicates?
There is obviously no option to select No Duplicates in the field settings?
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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 )
SELECT tblCandidate.SSN, tblCandidate.FirstName, tblCandidate.MiddleName, tblCandidate.LastName, tblCandidate.Phone, tblCandidate.Email, tblCandidateTracking.ActionDate, tblCandidateTracking.HireMechanism
FROM tblCandidate INNER JOIN tblCandidateTracking ON tblCandidate.SSN = tblCandidateTracking.SSN
WHERE (((tblCandidateTracking.ActionDate)=[forms]![frmNewHireMain]![txtEODDate]) AND ((tblCandidateTracking.LastAction)="EOD"));
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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
FROM CMPreport LEFT JOIN tblMaster ON CMPreport.ID = tblMaster.ID
WHERE (((tblMaster.ID) Is Not Null));
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Dec 8, 2005
Hey, all! Thanks for helping, here is my situation.
I have a table with about 70,000 records that have duplicate Address field values. The rest of the field values for those records are different. When I do a find duplicate querry I get the result that 17,000 records have the same address. However, when I do the append qurrey as instructed here: http://support.microsoft.com/?kbid=209183 I get a total of only 600 records in the new table. I have tried deleting all of the indexes for both the new and old table, with no luck.
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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