Tables :: Unique Identifier - Increment For Duplicate Records
Jul 10, 2014
I'm currently in the process of doing a an overhaul of the database including a table, some odd 17,500 records long.
What I need to do is to create a unique identifier from the existing part number, almost like an autonumber, but it only increments when there are duplicates. What I mean is that there would be for example, there would be five records of say, part 000135.
What I'm trying to get at is, how I would have to code to grab the existing part numbers (all formatted to be 6 digits), add an extra 2 digits to be its unique identifier, and then save it all to a Unique Identifier column, that I created.
An example of what I want is say, I have part numbers 000135 and 000136. The numbers would go up from 000135-01, 000135-02, 000135-03, 000136-01, 000136-02.... The dash is not as important as implementing the 2 digit unique identifier.
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Jan 22, 2015
Any way on a table that I can have a unique identifier over two fields? E.g.I have a login ID and a Domain field in a table with sample data below.
Login Domain
John Test
Jane Test
Fred Live
John Live
The login names need to be unique to the domain so the integrity cannot be breached. This has to fit into one table (although the domain is actually being pulled from a look up table so is in fact a numerical value) for ease of form creation.
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May 28, 2014
I have 3 tables
tbl1 :
NameID
Name
tbl2 :
CatID
Category
tbl3 :
ProdID
CatID
NameID
Remarks
How can I avoid duplicate records in tbl3? Since remarks can be Null? product is later used in tblInventory...
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Mar 5, 2013
To prevent duplicate records, I use multiple fields indexes, which worked fine until now. I learned that each "empty" fields are consider unique by Access, so not the best in an index to prevent duplicate records. I managed to have it worked using the default value property to give each "empty" records the same value.
Now my problem is that I have a date field which is optional, but I need to use it as a unique identifier in an index. I could again use a default value, but since it has to be a date, I find it confusing. I would rather have a default value of "No date specified" or "-" or even better, "". Unfortunately none of those works with date fields.
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Aug 22, 2006
Hi All.
Is there a way to index and create a unique identifier using a combination of fields (eg. User# + Provider + Date)?
Thanks.
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Nov 27, 2014
I'm looking into create a small unique identifier to put on top of each invoice generated by the database. (.MDB A2010)where '000' its just 3 zeros added for extra badassery, '1' is the actual ID from the database table and -2014 its the current year when the record was added...So maybe I have info from 2 fields (ID, YEAR)... but How do I add the ceros to the ID field... so its 0001 not 1 or 0135 not 135... ???.
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Dec 9, 2014
I have a database in Excel that contains farmers who can be identified by a Unique identifier: MZ-01-0001. The registration details for these farmers are not always up to date. Now when I try to append the data for the farmer with MZ-01-0001; with the primary key set on the Unique identifier, Access does not want to do it since there is already a record in the system. When I remove the primary key it doubles the record, which is also not what I want. So I am wondering what I need to do to append the record while keeping the primary key intact.
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Jun 20, 2014
I have a large table with information about different cars, called "Car Metadata". In this, each car has a unique identifier ("Car Code"), the make ("Manufacturer Name") and the model ("Short Model").
What I want to do is create a form with dropdown menus.I have a first combo box with all the makes in the Metadata table.
What I am having trouble with is that I want a second combo box underneath which would only show the models which correspond to the make selected in the first box.E.g. someone could select Ford in the top box and the second box would only show Fiesta, Focus etc.
Once it has done that I want it to be able to write the Car Codes for the records which match up to the make & model selected to a new table. Just to complicate things further, there can be multiple records with the same make and model but different Codes, I want all these multiple codes to be written to the final table.
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Mar 5, 2008
hello,
In excel i used the following formula =IF(COUNTIF(U$2:U$900,U3)>1,"Duplicate","")on one field to find duplicate, but I cannot come up with similar formula on column fields in a table.
Any guidance?
Thank you in advance
Niri
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Jan 9, 2007
Hi,
I wonder if someone can help with what must be an easy solution to this problem.
I have a table with 350,000 records, but without a unique identifier field. I just want a simple incrementing number field to become the primary key but dont know how to add this in. I cannot add an autonumber as there are two many records - it falls over.
Ive tried exporting it all to excel, but as well as being cumbersome, something went wrong and so I'm back to square one.
I think there must be a way to add an incrementing number either via a query or in VBA but I dont know how. Please can somebody provide a solution.
Thanks,
Adam.
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Jul 22, 2013
Have a table with data in it and I want to add a new field to uniquely identify each record (simple numerical sequence like 1, 2, 3, 4.....). I don't know VBA and don't know SQL.
Tried opening the table in design view, adding a new field with "autonumber" as the data type but get the following error msg: "File sharing lock count exceeded. Increase MaxLocksPerFile registry entry". The table has about 750,000 records in it.
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Jul 23, 2015
So i have a access database with a main field that we can call vendor # (LIFNR) and another called Company code (BUKRS). There are multiple company codes under a single vendor #. Example:
LIFNR
BUKRS
0000010535
1010
0000010535
5060
0000010535
5610
0000010536
1010
0000010536
5060
0000010536
5610
What I am trying to do is create a 3rd column where i can have a unique row for each of these fields without it repeating. There is no unique identifier in this table and that is what i am trying to achieve.
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Nov 4, 2014
1. I have a database (see attached) with three tables all of them with the same fields. The first three are numbers (InCo_No, Proto_No, Year_No). Each of these fields (numbers) can be the same in the other table(eg. Year_No), but the combination of the three cannot be.
How can I prevent the entry of a duplicate combination of these three fields?
2. I want to have a form to fill the three tables separately, depending the values in the other fields.
How can I do this?
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Sep 18, 2012
I have two tables, Articles and Versions, related 1 to many. In my Versions table I want to set up a field that will start at 0 for the first version record related to an article record, and as version records are added in relation to that same article record I want it to increment by 1, no gaps. It ideally would be editable. It will not likely count above 5.
The result would be
Code:
article1 version0
article1 version1
article1 version2
article2 version0
article2 version1
article2 version2
article2 version3
What's the best way to accomplish this?
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Jul 3, 2006
I have a document database that often deals with multiple copies of a document. Each copy must have a record of its own. With the add new record form I would like the user to be able to add the extra copies automatically by duplicating the first entry "n" times but also incrementing the copy number field by one for each copy. Got the duplicate copy done OK but am stuck on how to increment the copy number. This database forms part of my yearly assessment and is due in a couple of weeks so would welcome some help.
many thanks
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May 12, 2006
Dear all,
Many thanks for taking the time to read this.
I have a slight problem which seems like it should be easy to solve but I have no idea how to do it.
I have 2 tables (table1 and table2 for instance) Table2 contains more data than table1 but should contain everything in table1 as well as more.
How is it possible to return just records that are in table2 that are not in table1
Eg
Table1 contains:
IDab
112
222
322
422
511
611
711
Table2 contains:
IDab
112
222
322
422
511
611
711
833
The query should return just the line:
833
as this is unique.
thanks again
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Feb 3, 2005
I have 2 tables that have the same structure and same column names - Table A and TAble B. If field1, field2, field3, field4, and field5 match - I want to see that duplicates exist.
How do I do it with 2 tables? I know the query wizard check for duplicates can do it in one table - but I need to compare the two.
thanks.
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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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Jul 30, 2013
I like to have a Auto number field in my table (tbltask) that use below codification
B10000001
Where B = Base code and 000001 = Identifier of the task.
The identifier of the task is a unique 7 digits number
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Sep 26, 2005
Dear all,
I would like to seek your help on this problem.
I would like to do a search for my records based on 2 different criterias. If found, the function should just return a boolean value so that I can act further based on the boolean value.
The reason I'm doing this is that I have 2 similar tables that contains EventID and AttendeeID and these 2 tables cannot have the same EventID and AttendeeID. So before I can allow a record to be inserted in the 1st table, it must check that there is no record in the 2nd table that has the same EventID and AttendeID. If there is, then i cannot allow the record to be inserted in the 1st table.
The same thing applies when I want to insert a record in the 2nd table. It must now check the first table.
Recordset.find seems to be only catering to 1 criteria, not 2.
Pls help. Codes are most welcome too.
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Feb 18, 2014
I have a table with at least 13.000.000 records. There are many duplicates records... For example
ID Name Family mobile car number chassis Register_Year
1 Roy Jalbout 9999 123456/G ASF4546 2005
2 Roy Jalbout 9999 854658/G GRK554JFJD 2009
3 Tony Elishah 1234 854658/G GRK554JFJD 2012
4 Sam Markos 5478 854658/G GRK554JFJD 2014
5 Roy Jalbout 9999 123456/G ASF4546 2005
As you can see ID Number 2,3,4 have the same car but every one bought from another so it's not duplicates
The duplicates here is the ID's number 1,5. So how to remove the duplicates. I remember you i have at least 13.000.000 records. I try to make a query to find duplicates then i make a copy of the original table and than i should make a primary key then append the data from the original table to the copy table, but here i have more than one criteria
When I made a query to find duplicates the result was 680.000 records and every one have a minimum 2 duplicates an maximum 4 duplicates so it's about 2.500.000 duplicates records at least....
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Apr 22, 2014
I'm wondering if it's possible to create a Query / Macro / VBA or whatever works, to detect the duplicate records in a table and delete them with the push of a command button. Or, even to do this automatically when the database opens using an AutoExec macro or something ?. I'd like for one copy of each record to be left intact in the table.
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Apr 27, 2015
How to get this one to display in a single column.
I know how to do this wiht VBA. But, this output will need to reside on a SQL Server View. So I need a SQL language solution. If it can work in MS Access Query, it won't be too difficult to test then translate to SQL Server.
Customer Table with PK Customer_ID.
There are two tables with FK Customer_ID.
1. Table Lease1 - Has 3 Fields - the form code enforces No Fields -or All Fields. The red * indicate a Required field - These 3 are entered together.
2. Table Lease2 - Has 1 field with 0 to Many records.
Goal:
The Type shows up in a single column.
Each Type shows where the data comes from (Lease Type, Surface Owner, Mineral Owner, or Hz Lease Type)
Challenge:
Lease1 table has 3 fields that need to be transformed into a single column.
Lease2 table has 1 field to be appended to the single table.
Then, there is the column that identifies where the data came from based on the column name.
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Sep 11, 2012
I'm able to import new data from excel just fine, but I can't import updated data from excel due to duplicates not being allowed for a particular field. Is there a way to keep from importing duplicate records based on one field, but still import data from other fields where the information is different from the excel file?
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Jun 9, 2014
Is there a way to merge duplicate/similar Access 2010 records into one record?
I have an Access table with 1,000 duplicate records, although they are similar and not exact duplicates. As you can see below, some records contain information that other records do not. Yet, the primary key is the same for all duplicate records. I want to find a way to merge data from filled cells of duplicate records into empty cells for each duplicate record. I do not want to concatenate the data (i.e. combine last and first name, etc.). I only want to fill empty cells if there is a match for it in a duplicate record. I will delete the newly exact duplicate records later. Short of correcting the records by hand.
Example
Code:
LastName FirstName SSN Address Phone Email
Doe John 123-45-7891 123 Anywhere St. NULL john(at)gmail.com
Doe John 123-45-7891 NULL (123)456-7890 NULL
Desired Result
Code:
LastName FirstName SSN Address Phone Email
Doe John 123-45-7891 123 Anywhere St. (123)456-7890 john(at)gmail.com
Doe John 123-45-7891 123 Anywhere St. (123)456-7890 john(at)gmail.com
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Feb 28, 2014
I have a query with over 85,000 lines of data where each row has a unique id but the unique id appears multiple times within the table. For example, there is a unique numeric id tide to various types of pets across four columns. So the id number 1 could appear in four different rows each with different pets. Please see the first attachment "Original Table"
I want to be able to create a table that has one for for each unique id with all of the corresponding pet data. Please see the attached "Desired Table".
Attachment 300829
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