I have 4 fields in a table that when combined must be unique.I know you can setup multiple fields as a combined key, but I don't really need these to be the key (I will auto number a unique key). I just need to make sure the same combination of codes is not entered twice.Do I set this up as multiple key fields anyway?
View RepliesI have a table as followed;
EmployeeID: PK
FirstName
MInitial
LastName
Company:FK
Department:FK
What I want to do is create a new field that automatically populates based on what is entered into the above fields.
Essentially creating a single field with unique data generated by multiple fields.
For Example if I entered the following informaiton:
EmployeeID: 1 (AutoNumber)
FirstName: John
MInitial: P
LastName: Doe
Company: FederalGov
Department:Test
The new field can be generated as followed: JohnPDoeFederalgovTest
What i plan on doing with this is making this "generated" field an index so no new duplicated records can be added.
I have downloaded a contact template from the internet ready to go. There are few things I need to get rid off and make changes to.
One of the most improtant thing is making one of the field unique. For some reason, i can get to the design view. I open navigation panel and right click on the table, there is no such thing call design view on the menu.
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.
I have a table - (Table A) that has 2 fields X and Y. I would like to write a query or script to make two new tables based on the unique values found in field X. In other words, all data where field X = 1 would be written to a new table called "1" and all data wehre field X =2 would be written to a new table called "2".I would like this done automatically.
Table A
Field X Field Y
1 a
1 b
1 c
1 d
2 a
2 b
2 c
(I know I posted this question before, but I fear it may have gotten lost in a thread so I am starting a new one)
I have created a multi-field pkey with the ModelDescription and VersionNumber fields. I did it the way that didn't require code as I could not find any online and am not versed enough in VB to do it on my own. I just highlighted both the fields and pressed the "Key" button.
My question is linking the tables. Should I just join them via the ModelDescription field? It won't let me join on both fields. Is it going to matter which field (ModelDescription vs. VersionNumber) I use to join the tables? I've never run into the need to have a multi-field pkey before.
So I have an event table with a muti value field with all the people on that event. This people field is look up column from my people table (so shows the name but stores the key).Anyhow what I now need to to do is record logs from the event for each person (from that muti value people field). I want ideally be prompted to enter the log data for each person, and show it related to the event it is for.
View 1 Replies View RelatedIs there a way of merging 2 fields together to create an additional field
my database consists of 4 main tables (in order of relationships)
*HeadOfficeDetails
*SiteDetails
*ContainersOnSite *Contracts2015-2016
For example;
Account Reference: TEST
Site Number: 001
and the field i would like to have;
Site Reference: TEST/001
I would also like that when i add a new site to that account i will have TEST/002....
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"
View 3 Replies View RelatedI am using MS Access 2007.
I have created a multi-valued field "Product Category" that lookups data items from a linked table. So, the Data Type for the multi-valued field "Product Category" is Number.
Now I want to change the Data Type of "Product Category" from Number to Text, and make a value list that I can type values in and can provide the same data items as the linked table.
How to change item source for the multi-valued field from a linked table to a list that I can type in values?
Is there a feature provided by MS Access 2007 can enable such a conversion?
how to do a particular thing in Access 2010 (I don't even know if it is possible).
I have a table named PRODUCTS:
ID_PRODUCT (primary key, autonumber long integer)
ALLOWED_OPTIONS (multi value text lookup field: "Option 1";"Option 2";...;"Option 9")
So I can store, for each different product, none, one, or more options to let the customers choose from.
I have a table named ORDERS:
ID_ORDER (primary key, autonumber long integer)
FK_CUSTOMER (foreign key, linked to the primary key of a CUSTOMERS table; represents the customer that places the order.)
FK_PRODUCT (foreign key, linked to PRODUCTS.ID_PRODUCT; represents the product that the customer has choosen)
CHOOSEN_OPTION (lookup text field; the customer must choose ONE option among those allowed for the product he has ordered)
The problem is that I would like the CHOOSEN_OPTION field to show as a combobox, listing the values stored into PRODUCTS.ALLOWED_OPTIONS, so that when a customer buys a product, he can choose only among the options allowed by that particular product.How can I manage a multi value field to populate a combobox, in which every item stays on its line? If I use, as a query to populate the combobox:
select [PRODUCTS].[ALLOWED_OPTIONS]
from PRODUCTS
where [PRODUCTS].[ID_PRODUCT]=[FK_PRODUCT]
I obtain an empty combobox.If I refer to the last field as [ORDERS].[FK_PRODUCT], Access asks me to type a value for "[ORDERS].[FK_PRODUCT]", treating it as an unknown parameter.I think that the problem is that when the combobox expands, the record is not committed yet, so FK_PRODUCT is unknown (NULL?). But this happens even if I commit the record typing something in FK_PRODUCT and then I re-enter the record and I expand the CHOOSEN_OPTION combobox, that is still empy although FK_PRODUCT exists, now.Is there a particular syntax to refer to a field in a record not committed yet (something like "THIS." or "ME.")?
I have created a table that acts as a header for my data and a second table that acts as line item data. What I need to do now is add a second child table that uses the line item data as its parent table and stores associated line items for each record. Is this possible?
This is a skeleton view of what I'm going for:
Master Table:
tlbAuditReportHeader
- AuditDate
- AuditArea
- Auditor
Sub Table:
tblDiscrepancy
- Discrepancy
- CorrectiveAction
- ActualCompletionDate
- VerifiedDate
- Notes
Sub table to Sub Table
tblFollowUp
- FollowUpDate
- AssignedTo
- SpokeWith
- EstimatedCompletionDate
- Notes
Sometimes tasks change hands or are pushed back depending on work load. It would be nice to be able to track something like this.
I am using collect data via email process to collect data by email, purpose is to update not to add new records but to update. The condition for update is to have data from one table only.
I have 4 tables data from which should be sent by email. These tables are related. I made a query based on tables and query is update-able. When I use this query, wizard does not give option of updating the data but only of adding new records.
I tried to first make a make table from a make table query but that too have the same result.
Any ways to make treat these tables in a single table? Almost all fields except one shall be just to read and one field shall be updated.
Hi,
I have a situation and i do not know how to handle it.
I am developing an application for a lawyer. In the data base i have the following tables: Files, the people table (that are involved in a lawsuit), and other tables. The problem is the following: in the people table, beside the primary key i have another unique element that is social security number.
In the files table beside the primary key another unique element exists: the number and date of the file (File 1 from 15.02.2006). A lawsuit file can have more law terms: today it has one law term and maybe next week another law term so i must have the same file many times in the table with the same code and another date, but i cannot add the same file many times in the data base because a file has data about one person and the social security number of the person is unique.
If anyone can offer me a solution it would be good.
Thank you!
Ok,
Bacically I have 2 different lists (well there will be 7 in total):
tblValves
ValveID
KKS_no
Description
List - specifies thats its in the valves list
TOP_Code
tblSpools (pipe sections)
SpoolID
SpoolTagNo
Description
List - specifies thats its in the spools list
TOP_Code
The reason that I have kept these two in different tables rather than combining them is because the spools table will relate to a few tables that will have nothing to do with valves. For instance the spools table will relate to a table called tblPipeSupports.
The thing is this: I would like if there was a unique number across both tables. Collectively the items in coth tables are called components. Some of the components from either table will have drawing numbers for instance so I would like if I could have a table:
tblDrawings
DrawingID
DrawingTitle
ComponentID (FK to valveID or spoolID)
However this won't work because valveID or SpoolID could have the same numbers. I could use a composit key like SpoolID + List but I think I'm probally making it more complicated than necessary. Also I'll have several tables like the drawing table e.g. some of the components will belong in the testPack table... And I'l have to repeat that List field in each..
So what do I do?
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
I use Cognos to pull raw data from Oracle. I take this data and put it into Access 2010 tables to then run queries. Because the people creating the data in Oracle are often slow, I run back data to catch missed information, typically two months. For October, for example, I'll run October and also September and August.While I have new data, I also have a great deal of duplicate data. How can I ensure that I append only the new data and exclude the duplicate data?
View 6 Replies View RelatedHi Everyone,
I have read several tutorials on linking tables to store data, however I cant seem to get this right. I need a little help with my table design and structure. What I am trying to accomplish is a database that captures the following:
-Name
-Employee#
-Group # (1-25 One person can be in more than 1 group)
-Referred By (Only one name for each Group the person is in)
-Priority # (Can be a 1 or a 2 for each group # the person is in)
-Outcome of group (Just a small text explination of the outcome)
-Date Scheduled (Can be mutiple dates scheduled for each group)
So basically what I want to do is be able to retrieve a list of what Groups an emplyee is in, Who reffered them to that group, the Priority # of that person in the group and what dates they are scheduled for each group along with the outcome of each group they have attended. I know I need to join multiple tables but I am a bit stumped on how to go about doing this. Any help with my database and table design would be much appriciated. Thanks.
Greetings all! We have a mentor-mentee database that's been setup with a many-to-many design. We're storing essentially the same data in each table except for the field names. We thought we were good to go but one additional request was made to determine a count of employees participating in the program (regardless of whether mentor or mentee) in each section of the company. We don't want each person counted multiple times if they are both a mentor and a mentee, or if they have >1 mentee or >1. I created a couple of queries to pull unique empIDs from each table to narrow down each table BUT I'm stuck on being able to pull unique id's from both tables.
I first tried the unmatched query wizard from both viewpoints but then I don't get those cases where a mentor is also a mentee. In other attempts, I end up with a cartesian product. I've cruised through the queries section but haven't come up with any examples related to this type of situation.
I need a way to pull both unmatched records from each table while also getting essentially the first occurrence of instances where mentorID=MenteeId. I'm no SQL expert so if someone can think of a statement that would suffice, it would be greatly appreciated.
How i would best combine values in a table to produce a 'primary key id number.'
For example: the first letter of a city in the ID and the next number available/auto number - Portsmouth -> P233
I know i can create this in a query however i want it as the unique ID for that record entry in a table. If that doesn't make sense i can try to elaborate some more.
I am working in Access 2003.
I have set up a form that fills out my master table. What I am having an issue with is:
I have 6 different categories that different items fall under.
example: Category 58-Wire Rope and Cable
Category 60-Fasteners
Category 93 - Safety
I need each item that falls under any one of these categories to have a unique identifier starting with the category number.
Example: Safety Glass - - - part number 930001
1.5 inch Cable - - part number 580001
I want to be able to select a category from my drop down box on the form and for the part number to auto fill with the next available number in that sequence.
What I have is a small POS system I'm trying to create a unique invoice number for each transaction (multiple records)
I have two tables, one named "CurrentTransactions" and one named "Past Transactions".
I have everything working except the invoice number my system works by adding pre defined records into the table "CurrentTransactions" and once the sale has been finalised it transfers the data to the "PastTransactions" table.
take the last number from the "PastTransactions"."InvoiceNumber" to create an invoice number in the "CurrentTransactions", and I want to be able to do it using an expression in the default value property as opposed to in the form ( I've tried the form way but using Dmax would require me to almost rebuild my entire POS system )
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.
I am undertaking an analysis of corporate mobile phone data based on data from the phone provider. The base data consists of a number of monthly text files at transaction level for voice calls, data usage, billing/tariff information, international calls/transfers etc. I have set up VBA code to import the text file data into a number of Access tables.I would like to have a way of joining these tables but the only common field is the phone number (a text field with the groups of numbers separated by hyphens).
I confirmed that joining the tables on the phone number text field does not work.My idea was to create an additional table with just one row for each phone number and link that to the other tables by the ID in the new table. I was able to create this table [PhoneNumbers] (by creating a totals query of the phone numbers from the main call transactions table, I then dumped it into Excel and then imported it into a new Access table with an auto-generated ID column).My problem / challenge is how to get the ID column from my [PhoneNumbers] table to appear in each of the other tables so that I can join them effectively. In the Excel-world, I would have used a vlookup function.I even thought of performing this as an interim step in Excel but there are too many records / rows in some of my tables. It seems that the dlookup function is not what Im looking for and even if the IIF function is suitable, I cannot get the syntax to work for me.
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.
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...