How To Add Auto-generated Unique Identifier Field To Existing Table
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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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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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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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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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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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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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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Apr 23, 2014
-Microsoft Access 2010
-Existing Access Database contains tables with 1-2 million records
I would like to add a field[dol] to an existing table[rei]. I need this new field[rei].[dol] to be populated with existing data from another table[main] based on the associated field[main].[account1] or [main].[account2] or [main].[account3].
Table1[main]
...account1
...account2
...account3
...dol
[code]...
In the [main] table. There is always data in [dol]. But there is NOT always data in the [account] fields. Sometimes there is multiple account numbers per [dol] but not always.
Customers will ALWAYS have at least 1 [account] number and [dol]. Some will have multiple [account] numbers and [dol]. Sometimes these [account] numbers are the same in multiple fields[account1] [account2] [account3].I just need to do a lookup or something to find the [account#] and pull in its [dol] from the [main] table and populate it in [rei].[dol].
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Oct 14, 2011
I have the following code (below) that I use to allow the user to select a particular value to determine which records to delete. However, I was wondering if there was a way to avoid having the Microsoft Access auto-generated messages pop up.
For this particular case, after the user selects the value and hits the command button, then a msg box comes up verifying if the user wants to delete the records with selected value. Clicking 'Yes' will then generate the Access message that asks the user again if they want to delete the records and that these actions can not be undone. Clicking Yes here will delete the records.
However, clicking 'No' or x'ing off this Access generated message will then cause a Run-time error 2501. I want to handle this error if it all possible.
Code:
Private Sub CmdRemove_Click()
Dim strQuery As String
DoCmd.Beep
If vbYes = MsgBox("Are you sure you want to delete? Clicking 'Yes' will completely remove all prospects with the selected Class from the database", vbYesNo + vbQuestion, "Delete prospects?") Then
strQuery = "DELETE * FROM [Prospects] " & "WHERE Prospects.Class = '" & Forms("Classpopup").cmbRemove & "';"
DoCmd.RunSQL strQuery
End If
End Sub
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May 31, 2013
I'm creating a database using existing data from an excel file full of contact details. What I need to add is a queue type system where each contact in the database has a "Place in Queue" number which is unique obviously.
Lets say Alan is number 1, Bob is 2 and Chris is 3. They have these corresponding numbers in the queue field for their entries.
Now what I need to have, through use of a form, is a way of changing Chris from number 3 in the queue to number 1 and thus have Alan automatically shift down to number 2 and Bob to 3.
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Jul 13, 2006
I am developing a DB that is composed of approximately 50 tables. The primary key in every table is automatically generated byAccess. I understand that the primary key for each record in the table has to be unique. My question is: Is the primary key uniqueness applicable across the entire DB?
For example, table A has a auto gen key #25 in it. Therefore, no key in table A can be #25. Now I make an entry in table B (A:B, is 1:many). Can the primary key in table B be #25? OR, once #25 is used and continues to exist, it cannot be used in *any* table?
I have made several small examples and the keys across all the tables are unique. I don't know if this is guranteed across all the db tables, or just in my particular case?
Thanks
John
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Sep 20, 2006
Can controls in a form be made flexibly or auto-generated based on parameters set in another form?
Supposed I have a continuous form with 10 textboxes, while at some other time I need to have 12 textboxes or 5 textboxes only. Total textboxes needed would be set from another form. The maximum number of textboxes should be unlimited. Is it possible?
The backend table actually can be created flexibly using SQL based commands. And to link the fields to the textboxes is another problem.
Any clue?
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Jul 16, 2013
I am trying to construct a system in access where I can have a user type in a part number, revision of a part, job number, serial number quantity, and generate a serial number based on the quantity that they need.
I am getting hung up on even how to construct the tables effectively to accomplish this, let alone the forms, queries, etc.
The numbers have to be in the following form. XXXX-XXXX
For an example:
I have part ABC and I need 5 serial numbers.
I need to be able to create a batch of serial numbers automagically that reads like:
9001-0001
9001-0002
9001-0003
9001-0004
9001-0005
Then for the next part XYZ I need 3 serial numbers. It would be constructed like this:
9002-0001
9002-0002
9002-0003
With the goal of eventually being able to search a part number and revision, or a job number and return all serial numbers assigned to that.
Is this possible in MS Access?
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Apr 8, 2013
I am trying to add an existing field from one table into another table but the table Im currently in shows that option to be greyed out. What would cause that option to be greyed out?
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Apr 28, 2008
I have a table with more than 700,000 records. There are no unique fields or unique combination of fields. I would like to add an AutoNumber field but when I try I get the message:
File sharing lock count exceeded. Increase MaxLocksPerFile registry entry.
If I answer yes I get an error that the new field was not added. Is there any way to add a key foield to an existing database?
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Dec 21, 2014
I have a form (frmCompany) which has two combo boxes (cmbCompany and cmbCity) which is used to add field data into a table (tblCompany). The Company field is the only required field the other is optional.
In some cases I may wish to add a City, at a later date, to an existing Company using frmCompany. I now select the company from the cmbCompany combo box then add the city to cmbCity. The problem is that when I close the form I get two companies in the table with same name, one has a city and one does not.
How can I add a new City to an existing Company, using the form, without adding a new Company?
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Oct 31, 2013
Adding a field in Access 2007.
I am adding a exisiting field which is already available on a Global Table and would like to add it on a local table within the same database. Also bearing in mind the db contains main objects - Tables/Queries/Sharepoint lists/forms/reports
Whats the process in doing this? Once added how does the data get populated?
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Aug 13, 2015
I'm trying to write a query that will validate a field in an existing table. I want the query to show where any of the 412,000 records fail this strict validation:
AAnnnnnnA
...where A is any letter A-Z and n is a digit 0-9
Clearly I can use the LEN function to check for invalid lengths (anything <>9), but I'm looking for a simple neat expression I can use that will check the format. Does an existing function already exist before I resort to writing my own function in VBA (again)?
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Jun 8, 2014
I'm trying to add a combo box field to an existing table and form. I added the new field to my existing table and set it up as an combo box added my row sources. Then added the new field to an existing form and now am getting a error stating "The record source "Table name and added field here" specified on this form or report does not exist. When I just make the new field a text box instead of combo box it works just fine.
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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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Oct 31, 2006
There is already a form in the database I'm using that opens automatically when the database is opened. I do not want this form to auto open, but I want a different form that I have made to auto open. How do I turn this on/off?
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May 18, 2015
I am using the following to add a column to an existing table. How do I make this column indexed with no duplicates?
db.Execute "ALTER TABLE [BrandTBL] ADD COLUMN UPCGroupName TEXT;"
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Apr 12, 2013
I am trying a to build a slot booking database in which users will be able to book slots (ranging from 1-30) on a particular day for a specific site (location).
When trying to build the relationship between slot in tbl_available and slot in tbl_appointment i get the following error "No unique index found for the referenced field of the primary table" the same error pops up when trying to build a relationship between site in tbl_available and site in tbl_appointment.
I need both relationships to be 1 to many.
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