Adding A Unique Identifier Field To A Table With Lots Of Data
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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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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Nov 9, 2005
I only have one table and I read so often that its better to have multiple tables. For what I have, it seems to work fine.
Will this cause problems down the road?
Thank you once again
John D
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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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Sep 25, 2006
Please be patient with me.. really a beginner here. Thanks. :)
Here is my question:
I have multiple tableS (and by multiple, I mean a LOT of tables.) They are all similarly designed, with mailing addresses of potential customers. They were all entered at different locations and different timing. What I want to do is to take out all customers from a particular country at one go. The simple and tedious way is of course to merge ALL the tables then run a query. But is there a simpler way?
Somebody wrote me a SQL thingy, that helps me remove all the duplicates, so that is not a problem. But the merging of the tables is too tedious considering the number of tables involved. I myself have around zero knowledge of SQL, but if the solution is in that direction, please let me know, and I will find someone who can help figure it out.
THANKS!
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Apr 14, 2013
I have tblCategory and tblExercise. The data in tblExercise can sometimes match with more than one record in tbCategory. When inputting data into tblExercise how can I choose to have that stored under more than one field in tblCategory?
Example:
tblCategory: Arms
tblExercise: TRX Biceps Curls
so TRX Biceps Curls can also be under
tblCategory: TRX
Right now I have to input TRX Biceps Curls under Categories Arms and TRX. Very time consuming.
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Jun 15, 2015
I have a query all set up and now I have to add one field from another table in it. I am looking for a date which has the criteria Now() - Last Movement Date. Last Movement Date is the column I am taking from the other table which I just added which is the ZLX02 table. When I run the query, everything but the Last Movement Date shows up. What can I do to get the Last Movement Date to show? Check out the attached pics.
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Dec 1, 2013
I have a table in my DB called, devices. This contains all the information about various devices we have deployed in the field.
These devices are also contained in 2 other separate MySQL DB's.
What I need to do is add 2 additional field to my access table for the DeviceRecno and DeviceID of the same device from the MySQL DB's.
Adding the field is easy, but I cant think of a way to enter the recno and ID from the other DB's without typing them in manually for each one.
The common between them all is the serial number of the device, and I can get a list of serial numbers, recno's and ID in an excel sheet.
like a vlookup in excel to easily populate all the existing records with the recno and id's from the other db's?
When I created the access system there was no intention to link it to the other DB's for any reason, but that has now changed due to a lot of reasons.
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Mar 27, 2008
Hi
I have a table called SWAPS which contains information on each user and the different equipment he has been issued. Query at the moment contains 5 fields
Payroll, Surname, Firstname, Mobile No and Date sent.
SQL for this query is as follows
Select Swaps.PR, Swaps.surname,swaps.firstname,swaps.[mobile no],Max(Swaps,[Date Sent] as Lastdate
From Swaps
Group by swaps.pr, swaps.surname,swaps.firstname,swaps.[mobile no]
Order by swaps.pr;
Now when I run this I get the results I want by date so I get
123456 Smith Fred 0788411025 12/3/8
456789 West Bob 012555447854 13/1/8
So it correctly ids all the last dates for me as I want to see the latest issue date for that user. Now I want to add in another column to this query which contains the serial number of the equipment issued and heres where the problem lies. If a user has been issued more than 1 piece of kit, I get all the serial numbers irrespective of date. How do I get it to display the serial number for the latest date?
Thanks
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Feb 21, 2015
I Have one table which have 4 column ,i.eID , NAME, PAN, DOB..in this table same id having diffrent data of Name or PAN or DOB except DOB all are text format when i m trying to select unique id which having more than 1 name it shows 0 data, but table having these,,
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May 28, 2013
I have a table with data like this
Field_1,Field_2,Field_3
A,B,5
A,B,3
A,C,7
A,C,6
X,Y,4
X,Y,3
I need a report where I can only see
A,B,5
A,C,7
X,Y,4
That is Group by Field_1 and only show the records which has Field_2 with the max. value of Field_3
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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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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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Jul 18, 2005
Hi,
Anyone know how to create a combo box that has unique month and year entries from a table (month in one column and year in another - i.e. 2 columns)?
I've been able to get the textbox of the combobox to output the correct format using a custom format but it does not affect the combobox data. Also, I'm not sure how to separate this by two columns...
Any help would be much appreciated!
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Oct 8, 2013
I am trying to create a one-to-many relationship between these two tables. I want to be able to access the 3 fields on the [Processors] table within reports based on [AllItems]. [AllItems] is a listing of account activity where the [AccountNumber] repeats. I have every field set as the "Primary Key" on [AllItems] as that is the only way to avoid importing duplicate data. I am getting the error: "no unique index found for the referenced field of the primary table"
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Jan 24, 2007
Hi.
I have a table with a NAME field and a GENDER field.
How would I code a query so that if the gender is MALE than MR. would be added to the front of the existing data in the NAME field? MRS. if gender is FEMALE?
i.e., the result would be MR. SMITH, MR. JONES, MRS. CARSON...
Russ
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Sep 18, 2006
hi
I had a form with TO,DATE,BODY and a button .
on click of a button this fileds should get added to a table.
I have created a table with same fields.
Thanxx
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Jul 29, 2014
I have a set of transactions with a Unique ID field and a date. I want to add a field based that gives me the sequence of events for each Unique ID in order of when it happened.
For example, if customer X has 6 transactions, the sequence field would have a number (1-6) in each record that corresponds to the order in which those transactions occurred. The first transaction would have the number 1, the second would have the number 2 and so on.
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