Preventing Duplicates In A Form
May 28, 2007
Hi all,
I've got a database with a members table and an events table and a participation table which is like an 'intermediary table' which just has fields for MemberID_fk and EventID_fk.
The form at the moment has a combo box for Members and a combo box for events. This works well but the problem with it is that there is no safeguards to prevent a member from joining the same event many time.
Ideally i'd like for the combo box of events to be updated once the member's been selected to only include events the member has not signed up for.
If anyone's got any suggestions i'd love to hear them. The only constraint i have is that this has to be prevented when it is entered in the form.
Cheers,
Joe
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Jun 27, 2005
Hi,
I have a form and within that form there is two combo boxes and one text box. When one choses a value from one combo box, and then chooses a value for the other combo box and then enters the value into the textbox I don't want the user to be able to enter the same arrangement. That is I want to prevent duplicates on that combination. Also if they do this I want a Message Box to appear saying that that this combination already exists
I was thinking of using a multiple field index to prevent the duplicates, but I don't know if this is a wise thing to do. Can someone give me some help to see how I can prevent duplicates or offer another solution to prevent duplicates on the combination of the values.
Thanks
Greg
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Jun 13, 2007
Hi, How do you normally prevent duplicates being inputted into you forms.My Idea is thisThe input text box doubles up as a dropdownlist of current values held in the database for that field.So when you access the organisation form and go to the first text box as you enter the 'I' for IBM All the orgs with 'I' appear. When you see that the organisation your inputting already exists you will stop and move on to the next form.I dont know how to do this, so currently I have set the field OrgName as Indexed: Yes (No duplicates) but this isnt really any good as the user enters all the other details and clicks submit before the error message comes up.I have attached my file for you to understand this better.
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Aug 15, 2013
Access 2007 - I am using the oft used, frequently posted and shard code from srfreemen - modified as below. now I know I sort of broke commandment # 8 - Thou shalt not copy and paste other people's code without at least attempting to understand what it does. but I honestly did try to understand what it does.
I keep getting runtime error 3078 - cannot find the input table or query 'tblEnrolment_Committee_Master'. It is the name of a table in my database but I am missing the very basic element of how to get my form (which draws all of it's fields from that table) to look it up or identify it.
Likely because of a silly basic error. Normally - I wouldn't attempt such things but my work needs me to ensure no duplicates exist in this case AND it's already a primary key - but I don't want to wait until the whole form is filled out for it to identify the duplicate!
How to get the tblEnrolment_Committee_Master to be included in the search and erase this error ...
Private Sub Entitlement_File_Number_BeforeUpdate(Cancel As Integer)
Dim SID As String
Dim stLinkCriteria As String
Dim rsc As DAO.Recordset
Set rsc = Me.RecordsetClone
[Code] .....
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Oct 12, 2012
I am trying to modify an inventory management database. I want to prevent duplicate entries to specific fields in centralized table. The table is called Work Stations. Its function will be to track various computer equipment by a specific work station name. Each of the items will have a unique asset tag.
The primary Key for Work Stations is WS-ID. The fields I am trying to prevent duplicate entries in are WS-Computer, WS-Docking Station, WS-Monitor_1, WS-Monitor_2, and WS-Switch. Each of those fields are primary keys in 4 different tables that conation more detailed information about item. The exception is WS-monitor_1 and WS-Monitor_2 have a one-to-many relationship with Mon-Asset Tag in the monitors table.
The goal I am trying to accomplish is when a work station ID is created or modified duplicate entries are prevented to those fields listed above. The computer, monitors, docking station, and switch fields in the work station table may contain data or may be null.
I have tried to set the Indexed Option to Indexed (No duplicates) for each of the fields and I have also tried setting Yes to Ignore Nulls in the index option on the table design tab for the individual fields. Both options have returned the same error stating the changes would create duplicate values, in the index, primary key, or relationship.I have not created form for this table yet as I was trying to get no duplicates option to work first. I have verified the data and the only duplicating fields are the Null fields
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Oct 15, 2013
How to prevent duplicates on the combination of two fields - text & numeric?
I'm currently using the code below that warns users when the combination of two fields have already been used. (Combination of the TWO fields has to always be unique so if used again will warn the user)
Works well when both fields are numeric but fails when the JobDetails field is changed to text in the main table (tblPPMPLanner)
Code:
Option Compare Database
Option Explicit
Private Function IsDuplicateRecord() As Boolean
On Error Resume Next
Dim PreviousRecordID As Long
IsDuplicateRecord = False
[Code] ....
The field that should be a text field is called "JobDetails"
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Sep 7, 2005
Hi
I have a Switch Board and when I click to view a report on it the report automatically opens in maximize view, this is what I want. What I dont want is when I close the report for the Switch Board form to be maximized as well
How would I be able to prevent this??
Cheers
bikeboardsurf :rolleyes:
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Jul 11, 2006
Hi
Hoping someone can help me here. I have a form which is maximised on startup which also has the min/max and close button disabled. What i'd like to do is also prevent the user from restoring the form to ie. click the restore button which then makes the form smaller as i'd like the form to permanently remain maximised.
I'm not sure if this is possible, but if not is there a way to size the form to fit the height and width of the screen as if it was maximised regardless of the screen resolution the user is using.
Any help would be appreciated.
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Oct 29, 2006
Hello again,
I have three questions this time 'round:
1. I'm in need of some way of preventing a user from opening form B unless he has entered information in form A.
Right now it is possible to open form B without entering data in form A (form A being the date/time info and form B being the case technical info) due to which a record is created for clientnr 0 (which should be a non existing client). Querying for clientnr 0 from time to time and deleting those records is easy enough, but who knows what kind of relevant data could be stored accidentally in a record that doesn't belong there.
This happens by the way, even though referential integrity is enforced throughout the dbase. Maybe I should say, because of that. I want to keep it that way of course to prevent orphans roaming around. But having orphans for clientnr. 0 is also not a good idea.
2. What is the wiser thing to do: keep all information concerning one case for one client (date/time info per case, techinfo per case, maybe even products sold info per case, payment info per case) in one table and have the data needed for each thing entered in seperate forms, or have all data split up into seperate tables like I have now. One for clients, one for dates and times, one for the technical info for that case etc.... ?
It is starting to seem a bit ehrm... useless to have all that data for one case floating around seperate tables. I don't know... it seems so much more complex (having to create multiple relations, multiple PK's per table etc.).
Where do I draw the line? For example the image attached (relationship2.jpg): now I have one PK in the table holding the clients (clientnr), two PK's in the table holding the case date/time info (clientnr and casenumberdatetimeinfo), three PK's in the table holding the techinfo (clientnr, casenumberdatetimeinfo and casetechinfonr). And what's next? Four PK's in the table holding the sold productsinfo? Five PK's in the table holding the invoice info? And what about the relations between those tables? Right now I can still comprehend.... but when I start thinking ahead, I'm starting to get dizzy. So some advice on this would really be highly appreciated.
3. Which build up of the relations between the tables in the dbase is better? The one in relationship.jpg or the one in relationship2.jpg?
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Jan 26, 2008
I have validation logic that runs to test whether certain fields are inputted properly etc on my form. I call these methods in the Before_Update of each form. But How do i actually STOP the update from happening? OR how do i stop the form from being closed?
Right now, I just give all these warnings but the save still happens!
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Nov 9, 2012
While I was trying to test one of my forms (which was NOT working and I had to totally redesign it), I somehow created a bunch of stores in my Store Information table...some with no names, some with the first letter of an existing store, and there was even a duplicate of the store which is creating a problem now because some products exist in Store 1A and others exist in Store 1B.
I've created a query to identify the wayward products and am changing those. I'll delete that store then.
My issue is...can I set it so that the ONLY place a new store can be created is in the Store Information Input form? That if someone makes a typo when entering products, it doesn't create a new store?
Access 2010
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Mar 10, 2014
I'm using the following code to ask the user whether to save changes to the data, don't save changes or Cancel the close and continue editing. I'm closing the form using the 'X' only.
Code:
Private Sub Form_BeforeUpdate(Cancel As Integer)
Dim UserResp As Integer
UserResp = MsgBox("Record(s) have been added or changed." & vbCrLf & "Save the changes?", vbYesNoCancel)
Select Case UserResp
[Code] ....
The problem I'm having is when I press the 'Cancel' button in the message box. When I press 'Cancel' the form remains open (bPreventClose=True) which is what I want. But the changes to the data get undone even though I don't have Me.Undo in that case.
First, what's causing the undo?
Second, how do I prevent the data from undoing when I press 'Cancel.'
I went to add a record earlier and selected 'Cancel' because I wanted to change one small item. I lost all the data I had put in and had to start over.
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Jun 21, 2005
I have a main form and a sub form. Tbhidden and tbpropersave are the text boxes that govern the update procedure. The main form has two text box that i use to prevent the user from modifying the information on the main form without clicking my custom save button. the problem is that the subform should be completed after the information on the main form has been filled in. The Update code i have refuses to allow me to complete the subform without first clicking the save button on the main form. Here is the code. I wana be able to fill in info in the main form, then the sub form then click save. The sub form is a table which relates to the main form table Many to One.
Private Sub Form_BeforeUpdate(Cancel As Integer)
On Error GoTo Err_Form_BeforeUpdate
Me.tbhidden.SetFocus
If Me.tbPropersave.Value = "No" Then
Beep
MsgBox "Please Save This Record!" & vbCrLf & vbLf & "You can not advance to another record until you either 'Save' the changes made to this record or 'Undo' your changes.", vbExclamation, "Save Required"
DoCmd.CancelEvent
Exit Sub
End If
Exit_Form_BeforeUpdate:
Exit Sub
Err_Form_BeforeUpdate:
If Err = 3020 Then 'Update or CancelUpdate without AddNew or Edit
Exit Sub
Else
MsgBox Err.Number, Err.Description
Resume Exit_Form_BeforeUpdate
End If
Please HELP
End Sub
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Dec 2, 2012
I am new to Access and have made a database for a shuttle company that keeps track of their bookings. I need to prevent from the same booking being entered twice. I have a "Booking Form" that was made from a table "Master List". I was wondering if there was a way to compare three of the fields and if they match then a error would pop up.
I think if the "client's name", "booking date", and "pick up time" matched then a "booking already exists"... and also there are four different people can enter data and they have a log in form how can I get their "username" to be put into a field on the "Master List" automatically...
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Aug 13, 2014
What is the code for displaying warning message when enterenig duplicate information in unbound form in BeforeUpdate event procedure.
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Mar 26, 2013
I have created an Access 2007 database that uses a form for data entry. While the data is stored on the table exactly as entered, the data entry form rounds up and only displays the whole number.
In the properties of that form field, I have the format as fixed, with decimal places as set to 1 and is visible. However, the number still rounds. What do I need to do differently to make the number display as entered on my data entry form?
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Aug 13, 2015
I have Table for rooms called Rooms, and the data in the table is roomNumber which is in the format Letter and two Digit number, so A01 would be dorm building A and room building 1, and I then have a seperate row named roomType that is either VIP or Semi Private.
Now I am creating a form where a worker will put in there scheduledCheckin date and scheduledCheckout date and it will be written to the Bookings table. I would like this form however to take the dates they have put in, as well as room type (Semi-Private or VIP, and assign them an available room that isn't booked at all in that range) or list all available rooms for that range of time and they could then just select the room. I would rather it automatically assigns an available room based on room type though because this check in system is going to have about 500 rooms.
I've attached a link for what I have so far. I know how to make a query to list anyone who has booked rooms over that date, but need one for just preventing booking the same room.
[URL] .....
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Feb 12, 2008
Hi this is my first post... so hi all :)
ok what i have is a table with contact details 900k plus
there are about 90k of which are duplicates.
this is the basic feilds that are important in this case.
Id, data_source, data_recived, data_code,
what i want is to have a table with unique records (no dups in data_code)
this table will look like this...
Id, data_code, Num_dups, dup1_source, dup1_date, daysbtw_Dup1_dup2, dup2_source, dup2_date, daysbtw_Dup2_dup3 ,dup3_source, dup3_date, daysbtw_Dup3_dup4 ,dup4_source, dup4_date,
I know there is no more than 4 dups of each record.
what i want from this is a table that will give me a record of how many dups for each record then all the dates that they were added and the date between each record entry.
if anyone can help it would be great .
thanks in advance.
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Dec 8, 2005
Hey, all! Thanks for helping, here is my situation.
I have a table with about 70,000 records that have duplicate Address field values. The rest of the field values for those records are different. When I do a find duplicate querry I get the result that 17,000 records have the same address. However, when I do the append qurrey as instructed here: http://support.microsoft.com/?kbid=209183 I get a total of only 600 records in the new table. I have tried deleting all of the indexes for both the new and old table, with no luck.
I'm using Access 2000 on XP Pro.
If anyone could help with this I would greatly appreciate it!
Thanks
Will
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Apr 9, 2013
I have a form that is pulling data from a previous days transactions but most (not all) transactions are duplicated.
I created this form a couple of years ago and have not modified it for about 3 months and nobody else has made any changes. When I look at the query that the form is pulling nothing is duplicated. When the Recordset type is Dynaset (Inconsistent Updates) I get 94 records, when I change it to Dynaset, then I get the correct count of records of 80.
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Nov 10, 2005
Hi,
I have the following set up on a form to pull together a query (by form) and resulting report:
Publication
Sector
Product
Region
Each publication can have multiple sectors/products/regions. The resulting query therefore duplicates the publication, for example:
Publication 1 Sector 1 Product 1 Region 1
Publication 1 sector 2 product 1 region 1
publication 1 sector 2 product 2 region 1
etc etc...
The report ONLY has publication on it, but as it is based upon the query utilising the 4 factors above, the resulting report is:
Pub 1
Pub 1
Pub 1
Pub 2
etc
I want the report to only list the publications once - i have tried "hide duplicates" from the form field properties, however this hides the text but leaves a big gap on the resulting report when generated where the duplicate would be if it were not hidden.
There must be a simpler way to acheive this than getting another query to create a table based on the first query which (the table) only includes the publication name, and is filtered to remove duplicates through a primary key...
Can anyone help!?
cheers
amx
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Mar 26, 2014
I have a form which has a subdatasheet attached to it. there could be 1000 records in the main form but only 10O records in the Subdatasheet that match the records in the main form , these are linked by a "product number" .
Is it possible for the row in the main form to be "red" where there is data in the Subdatasheet that is matched by the "product number".
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Aug 14, 2013
I have a Listbox on a fprm which has a button attached to it, the button allows you select one of the items in the listbox and append it to a table. the problem is that it currently allows you to add the item as many times as you like. How can I check for duplicates?
Code:
Private Sub CmdAdd_Click()
'Add new record to tblShootingTasks
strSQL = "INSERT INTO tblShootingTasks ( ShootID, ContactName, Task ) " _
& "SELECT [Forms]![frmTasks]![ShootDateiD] AS ShootID, [Forms]![frmTasks]![Combo15] AS ContactName, [Forms]![frmTasks]![Frame17] AS Task;"
DoCmd.SetWarnings False
DoCmd.RunSQL strSQL
End Sub
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Jul 10, 2013
I have tbl_Proj, tbl_Notes, and tbl_Proj_City. They are all joined by the tbl_Proj's ID.I have a set list in tbl_City - tbl_Proj_City is 3 columns an ID for itself, tbl_City ID and tbl_Proj ID...In instances where a project covers more than one city, when I generate a report (or query) for that project I get each notes that number of times. If a project is in 3 cities I get each note 3 times.
I have a project entry form with a combobox subform for the city selection.The report is from a qry, by Proj_ID, I need to show the cities - the "key" city is the first alphabetically (also lowest via autonumber in City_ID). I would like to add that I do not know SQL. I have created this database using access commands.
I am thinking that I may be able to query the project ID for the Cities and somehow select the first alphabetically or the lowest in ID and store that somewhere? and then run a query that uses that and the notes to generate the report and then have a sub report for the other cities?
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Jan 1, 2015
Is there any way to highlight duplicates across a number of records on a continuous form (conditional formatting I presume)? My continuous form is filtered on load to show only the records relating to the specified date (specified before opening the form), and there is one field that I would like to highlight if there is a duplicate value in the same field on another record on the form. Is this possible?
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Aug 15, 2014
I am using the following code to check for duplicate tickets when importing multiple records into a datasheet view form by using the paste append function.
Code:
Private Sub Ticket_Number_BeforeUpdate(Cancel As Integer)
DoCmd.SetWarnings False
If DLookup("Ticket_Number", "Record_Store", "Ticket_Number= '" & Me.Ticket_Number.Value & "'") > 0 Then
Cancel = True
MsgBox "There were import errors, please open View Import Errors above."
End If
End Sub
The form is used to insert multiple records into the database at a single time.
That codes works to check for duplicates. And if there are none there are no popup messages.
If there are duplicates though it gives a popup for every single Ticket_Number that is a duplicate.
I am wondering if there is a way for it to give only a single popup once it completes checking all the records to be imported for duplicates.
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