Deleting Duplicate (but Not Similiar) Records
Jun 10, 2006
Hi,
I currently have a table in Access that contains over 2000 records, with a total of 20 fields (although some records do have null values for certain fields). Some of these records are nearly identical to one another and differ only in one or two fields. Others, however, are exact duplicates. Is there any way I can quickly go through the table and delete those records which are duplicates but, at the same time, ensure that those which are only similiar aren't deleted?
Thanks for any help!
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Apr 30, 2008
I am having problems deleting various rows from an SQL table, the message coming up is "The row value(s) updated or deleted either do not make the row unique or they alter multiple rows (xxrows). Any Suggestions?
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Sep 11, 2013
i have a data base with a primary key but some records have been added from a excel data base and now the data base has duplicate records with different primary keys. I do a Query looking for duplicate records based on a field not the the primary key. There are 315 out of 22000. I can sort the table and then manually delete the dups. The Query does not allow deleting records so finding the culprits in the full Data base is time consuming. How can i delete the duplicate records using a query? Is this function available hidden someplace in the guts of Access? Seems like this would be a frequent problem. The Microsoft forum addresses this problem and the only viable solution is the manual method, when they get to the Query method it looks like they just forgot what the subject was and tell you how to delete one record if you know what the criteria is. If two non Key fields are Identical then i want to delete one of the records.
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Jan 6, 2012
I have an Access table with a number of records which refer to the same [InvoiceNo] but with data in different fields. Normally, my database works like this:
1)Import data from Excel File to tblMain in Access
2)Import data from Excel File to tblVendorLine in Access
3)Import data from Excel File to tblDunning in Access
4)Query is sorting from two first tables only records that refer to the third one (by InvoiceNo)
5)We have only items from tblDunning with data from other two tables to be send (mail to the vendor).
The point is, that when I have relation between those three tables, I receive only few records, but sometimes - for example - tblDunning refers to 5 records in tblMain and to 7 records in tblVendorLine - but there is only 4 records related between tblMain and tblVendorLine, so query shows me only two records. Ive made a query for each table (tblMain & tblVendorLine - relation with tblDunning). Then make one query of those two queries. It append data to new table tblDunnAll
So for example the table would look like this after
Vendor | InvoiceNo | CoCode | Status | Clearing_Date | PBk
100000 23333 GB11 23/12/2011
233332 121212 GB18 16/12/2011
233332 121212 Complete K
134444 777777 GB12 Complete
100000 23333 GB11 Complete K
What I'd like to have is a table with:
Vendor | InvoiceNo | CoCode | Status | Clearing_Date | PBk
100000 23333 GB11 Complete 23/12/2011 K
233332 121212 GB18 Complete 16/12/2011 K
134444 777777 GB12 Complete
how to go about merging the data for each name into one record. There are lots of very useful posting about using SQL to delete duplicate but I can't find a posting with addresses this issue.
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Feb 16, 2005
I have a table which has duplicate values and i need to delete them, how do i do that?the table fields are
field1 field2 field3 Field4
1 a aa bb
1 a aa bb
1 b bc ab
2 a aa bb
2 a aa bb
I want to delete the ones which are bb in Field 4 and keep only bb value, how do i do this?
Thanks
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Jan 3, 2006
Hi guys,
I have a question I've been trying to figure out with no luck. I have 2 fields, companyname and zip, these 2 fields may have duplicate values or they may be uniquei.e.
companyname zip
billybobs 68135
dilberts 68137
billybobs 68135
what I need to do is delete all of the duplicate records where both companyname and zip match. Is there a way I can do that with a query?
Any help is greatly appreciated
Thanks
James
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Apr 12, 2008
I have two tables.
1. Persons (list of persons)
2. Job history (list of jobs)
each person have their own job history. all these jobs are stored in the job history table. when i delete a person i would like the job history for this person deleted as well. each job stored in the job table have a field with person name, so that it is linked to this person.
how can i do this? vba or simple properties options?
- Roy
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Aug 4, 2005
I have two tables (same data but slightly different attribute structure) with a one-to-one relationship (the join field is "ID"). There are 69 matching records in these tables. How can I delete these matching records from table A, while leaving them alone in table B?
I'm confused because I brought both tables into a select query, created a join from ID to ID (within in the query's design view), and then added all fields from table A to the query. I then ran the select query and saw the 69 records from table A in the query's data view that I wanted to delete, highlighted all records and clicked delete. However, this action deleted the 69 matching records from TABLE B, not Table A!!! How is this possible? What should I do instead? Thanks.
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Nov 11, 2005
A strange request but I hope someone can help with this one
I have a table (tbl_Econ) where I have to delete a specified number of records from a table. It does not matter which records as long as I delete the exact number
e.g On a form text box I enter the number or records to be deleted (e.g.6000).
The table (tbl_Econ) has 8000 records, so I have to delete 6000 records. I need to be able to do this automatically :eek:
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Feb 1, 2006
How can I go about deleting records fully? So that there autonumber, etc can be used again without access moaning.
Thanks :D
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Mar 14, 2006
I have a query (Query1) which returns results In one field recordID.
How do I delete records in a table where the RecordID is in the list Query1.recordID?
Thanks
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Jan 25, 2008
Hi,
how would i go about deleting a set of records? i can get a list of records together in a query taken from 4 tables and would need to, if necessary, delete a single line. not all information needs to be deleted from all 4 tables though? the info to be deleted would only be deleted from 1 or 2 tables being the last 2 in the relationship.
i guessed it might be an append query but im not too familiar with them.
any chance of a possible suggestion?
many thanks,
NS
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Oct 17, 2007
I am having trouble with my autonumbers when i have to delete a record.
Can anyone help me out with auto numbers?
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Dec 14, 2006
Hi there, i have a master reset to delete all the data in the database. Although, as there is a username and password entry to get into the admin module, i wish for one entry in the table participantTable to not get deleted (to save one password/username so its possible to log into the admin module after the reset). The code below will delete everything, how can i change it so it keeps the first record in the table, and then deletes all the other records after.
DoCmd.RunSQL "DELETE * from participantTable"
Thanks in advance
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Jan 25, 2006
quick question guys...
if i have a sales order that the sales order # is an autonumber and i manually delete the records my next new record still follows the last number i had before that is now deleted..
example
sales order 1001
sales order 1002
if i delete all the records on the table and clean it all out
the next new autonumber will be 1003...
i want it to be 1001 again...
and yes its set to an index of no dups
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Mar 19, 2007
Hello all,
I have 3 tables:
1. customer
2. DVD collection
3. Borrow
The aim of this system is to create a home borrowing system.
The customer table has a one to many relationship with the borrow table, while the dvd collection has a one to one with borrow. I can create a new book with no problem, and even view these on a form. Here my proble arises.
I ahve another form to return a DVD. I view the records from the borrow table, and once found what i want there is a button which deletes the record from the borrow table. Sadly, when i press this button, not only does it delete the record in the borrow table, but it will also delete the record from the DVD collection table.
I have tried everything i can think of, and i don't want to change to change the design as i have found this mnethod very easy to generate reports and the like. Any help??
Thanks
EDIT: the button i used was from the wizard that comes up when you create a button.
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Nov 24, 2004
Looking for hint how to avoid systems message box ("you are about to delete n records...yes, no") when deleting records from the table.
respect
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May 18, 2005
Hello.
I am using a large database, which usually works fine, and is set to compact on close.
Occasionally it has been losing a lot of data in the main table, probably when it compacts, down to a round number of records. This time it left me with 10,000 records exactly. (It has been different round numbers before)
Does anyone have any ideas as to what is causing this?
Thanks.
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Jan 25, 2006
quick question guys...
if i have a sales order that the sales order # is an autonumber and i manually delete the records my next new record still follows the last number i had before that is now deleted..
example
sales order 1001
sales order 1002
if i delete all the records on the table and clean it all out
the next new autonumber will be 1003...
i want it to be 1001 again...
and yes its set to an index of no dups
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Dec 27, 2007
Hi,
I am using Vb6.0 as a front end and msaccess as the db.
i want 2 delete all the records in a table "Register" by clicking a menu
The connection is made using ADODB
Till now i hv the code
Private Sub mnudel_Click()
Docmd.SetWarnings False
Docmd.RunSql ("DELETE * FROM Register;")
Docmd.SetWarnings True
End Sub
But when i execute this a error msg displays
Run time error "424"
Object required
Whats the problem in me
plz help me to come out from this...
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Apr 11, 2007
i know this must be a piece of cake but i'm new to Access!
Anyway, am using a delete query and want an expression that i can use in the criteria to allow me to detect (and delete) records that are 5 years old. i used Date() - 1825 but was wondering if there was any other way or function that would allow me to acheive this. any help regarding this would be appreciate! hope someone can help.
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Feb 2, 2005
I have a simple form with a subform on it (see enclosed Access 2000 Database). I'm trying to add/change/delete records from table: Component Name. Adding and changing records is not a problem but deleting is. It only deletes the value of the field "Interative Component Name" and not the entire record. I have my joins defined properly on the tables. What am I missing? I wish this Access stuff was easier to learn. Any help/clues would be greatly appreciated.
Thanks
Sue
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Nov 2, 2005
I have a "display only" subform that is updated by a popup form. If I add or amend an entry the details of the changes are displayed immediately in the display window by requerying the form "afterupdate". However, I have a delete button on my popup form which will delete a record but replaces it with the word #deleted in each of its fields. The #delete will only disappear once I have moved to another record which I don't want to do.
Can any one tell me why the amend/insert update works well but the delete behaves in this way.
How can I set up the delete function to function and remove the #deleted message without moving to another record. I have tried adding a save button but this doesn't fix it.
Thankyou
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Mar 23, 2006
Hi There,
I have a form with a search field for an unique field, that looks up records in the table that belong to that unique field. See Code:
Private Sub cboLastName1_AfterUpdate()
On Error Resume Next
Dim db As DAO.Database
Dim rs As DAO.Recordset
Dim strSQL As String
cboLastName1.SetFocus
If cboLastName1.Value > 0 Then
strSQL = "SELECT * FROM tbl24HRPolicies WHERE AutoNumber = " & cboLastName1.Value
Set db = CurrentDb
Set rs = db.OpenRecordset(strSQL)
If Not rs.BOF Then
Me.ID = rs("AutoNumber")
Me.Prefix = rs("PolicyNumber")
Me.FirstName = rs("DateReceived")
Me.MiddleName = rs("Comments")
Me.LastName = rs("ClientsName")
Me.Suffix = rs("ShopID")
Me.NickName = rs("Nickname")
Me.Title = rs("ActivePolicy")
End If
rs.Close
Set rs = Nothing
db.Close
Set db = Nothing
End If
The fields, that take content based on that search field, are unbound.
I've added the delete button, but it's not working, because they are unbound. Is there no way to delete records with this form??
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Nov 23, 2004
Hello:
I have created a form to record addresses, phone numbers and other information. How do I go about creating a DELETE button that when pressed, deletes ALL records from the table.
Many thanks in advance and for those of you who celebrate Thanksgiving, have a Happy Thanksgiving!
Regrards,
Dion
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Dec 22, 2004
Is it possible to have all the records deleted from either a command button on a form or from the switchboard...
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