How To Use DMAX - Linking Table To A Form
Mar 1, 2012I am using DMAX to try to link a table to a from in access.
View Replies
ADVERTISEMENT
Modules & VBA :: Dmax For Empty Table?
Apr 15, 2015How do i use DMax() function instead of Autonumber, since the table is empty and it wont know what to do with Dmax() + 1 for next record?
E.g I have a new table Customer_details which contains
customerID
customerName
Age
now if i enter data through forms, i want the CustomerID to be incremental for each new record, so i can use Dmax() function. But since the table is empty how can i tell the form, through VBA that if it is null store 1 else store Dmax("CustomerID", "Customer_Details") + 1
Linking Form To Table?
Apr 10, 2005Hi there,
I just added a new field to a table but i now need to add the field into a form so the table can be update. However when i open the field list to assign/bind the control the new cloumn is not present on the field list.
How do i add a new field which i have entered in the table to the field list?
Thanks Mark Flavin
Form And Table Linking
May 28, 2005Hi, i'm trying to get a field to only allow data to be entered that is in a table
e.g. i have a table which has a list of country dialling codes in it. In my form i want to only allow valid country codes to be entered-i.e. the ones which are in the table?
Ive tried coming up with different validation rules but cant seem to do it
Can anyone help?
Linking Form To Table
Sep 15, 2005I am creating a Risk Management Database at work. I have created a tab with options to choose, as to log the risk relevant.
i.e. I have a catagory, subcatagory and then Risk boxes
When saving the record it will save the risk but it will not save the catagory, and the subcatagory options choosen? I have a seperate table for this information to appear, Does anyone know how I can make this happen without stopping it from shortening the catagories down.
I hope this make sense. I am sorry I am a little rusty in Access 2003.
Thanks,
Linking Data In A Table To A Form
Jul 10, 2006hi, i have a table database created and i would like the information in it to be able to be linked to a form. but only certain information in the table, not all.
View 1 Replies View RelatedCreating A Form And Linking To The Table
Jul 11, 2007Hi Team,
I want to create a form which will act as an outage tracker. I will be having 2 kinds of tables.
1. Type of leave
2. Headcount with employee schedules
3. Goals for outage
Please find the scenarios
1. In the front end as soon as the Team Manager selects his or her name the next combo box should show the names of his agents.
2. Once the user selects the date of leave, if the leave is being marked 48hrs in prior and the total outage is less than the goal then it should show the planned leaves options as per the leaves saved in the "Type of leaves" table or else a message box should pop-up stating the reason for not showing planned leaves options.
3. Also the form should show the %outage marked on the tool for the week.
Need your help as I am pretty new with access.
Regards,
Malay
Modules & VBA :: DMax Nested In Open Form
Sep 19, 2013I need to use DMax to open the form on the last record based on the serial number. This code is what I have to open the form currently, but I want only the latest record related to the serial number:
Code:
DoCmd.OpenForm "Form1", , , "incoming_module_sn = '" & Me.txt_sn & "'"
Here is what I tried and it did not work:
Code:
DoCmd.OpenForm "Form1", , , DMax("incoming_module_sn", "tbl_module_repairs", "incoming_module_sn = '" & Me.txt_sn & "'")
Linking Form Fields To Table Data
Jun 14, 2005Hi Guys,
Haven't done anything with Access since I finished uni and I can't remember much. I'm trying to set up a simple database with customer recording and order taking functionality. Just in the very early stages trying to get basic things working.
I have a form where you enter customer details..at the bottom there is a command button named "Place Order", which will be clicked to go to the order form for that customer. Attachement shows very simplified version of the order form. I need to enter a Product ID, and have the Product Name automatically extracted from the Products table.
How can I do this? I would have done a search...but not even sure what this process is called in Access.
Thanks for any help.
Forms :: Linking Existing Form To New Table
May 1, 2015Each month I receive a new excel spreadsheet (alpha Roster), Last month I created a form so that I can track certain things off of the Table (spreadsheet), I just received the new Spreadsheet for this month and was wondering if I can use the existing form and how hard it is to link it to the new spreadsheet? Is that even possible? I don't want to have to re create the form every month, I would like to just bring the new alpha roster in and be ready to work.
View 4 Replies View RelatedModules & VBA :: DMax On Main Form Referencing Subform
May 2, 2015I have a form - purchase, and a subform purchase detail they are linked with a field "puid"..I need the dmax to give me the maximum auto number field "pdid" on the subform in a textbox on the mainform.
I used the control source code:
=DMax("[forms]![purchase]![purchasedetailds]![pdID]","[forms]![purchase]![purchasedetailds]","[Forms]![purchse]![purchasedetailds]![puid]=" & [Forms]![purchase]![puid])
and the simpler:
=DMax("purchasedetailds]![pdID]","[purchasedetailds]","[purchasedetailds]![puid]=" &[puid])
Forms :: DMax Criteria - Creating A Form To Input New Return Parts Into Database
May 22, 2013I am currently creating a form to input new return parts into a database. I am trying to automatically generate a tracking number (##-AA-####-####). I have gotten myself to generate the ##-AA-#### in a list box and almost was able to generate the sequence number, 0001, 0002, etc. using the dmax function. I would like to generate the sequence number one higher than the highest, depending on part type and last 4 digits of part number. Our parts have unique last 4 different p/n but more than one can fall under the same type.
View 14 Replies View RelatedDMAx Help
Sep 15, 2006Thanks for all the help to date.
Problem trying to get a dmax field for an invoice no in a query - am doing something wrong current attempt below won't work
Expr1 :dmax([Invoice no],[Table name]![Invoice no])
what am I missing - do I need something on the end when I get this to work I will use it to add 1 for the final query prior to print
Help With DMax!!!!
Dec 21, 2006Okay...I know the basic syntax for Dmax (or at least I thought I did) but I cannot get this statement to do what I want!
In the <before update> event I tyoed this:
Dim RNum As Long
Me.txtRNumber = DMax("[Request_Num]", "test_request") + 1
Me.txtRnumber = RNum
txtRNumber is the field on the form
Request_Num is the field on the table
test_request is the table
yes...I know the name syntax is bad (it's an older db I'm using as a test for a newer one).
Obviously, I want to automatically increment the field value by 1 on every new record (an if newrecord clause is included). But I just can't get the stinkin thing to work!!!
Max, DMax Etc
Oct 3, 2006I am having difficulty understanding under which circumstances I should be using Max() as opposed to DMax() functions. Both seem to do the same thing (find maximum value in a field), but DMax has additional arguments.
What I currently want sounds like neither of these, as I want to query the maximum of several values in various fields for a specific record, rather than the maximum of several records in a specific field. Is there a way of doing this otherwise than by nesting IIF functions several deep?
I keep running into "Microsoft Office Access has encountered an error and needs to close" error messages, and am coming around to the view that I may need a UDF. I have never done one in Access before (but did some time ago in Excel).
Currently I have fields in various tables:
T_Clients.Commencement
T_Clients.Cessation
T_Tasks.StartDate
T_Tasks.EndDate
There is a one (T_Clients.ID_Clients) to many (T_Tasks.ID_Clients) relationship
T_Clients.ID_Clients and T_Tasks_ID_Tasks are primay keys.
In "pseudocode" my query, probably via a UDF, needs to return:
Min(Max(StartDate,Commencement)+12months,Min(EndDa te, Max(Cessation,StartDate))+9months
Commencement and Cessation may contain Null values, which are then to be treated as #1900-01-01# for the purposes of any comparisons.
My first attempt at this was to create several queries, each based on the previous query. Inefficient, perhaps, but I could trace the logic. I started by creating queries that substituted #1900-01-01# for null values in the Commencement and Cessation fields.
However when I got about 3 queries deep I ran into the "Access has encountered an error and needs to close" error, and no amount of playing around with it stopped that.
I don't know if relevant but I don't *really* have a T_Tasks.StartDate field. I have a query that calculates the start date from the previous EndDate, but I did not want to complicate the problem specs. That query seems to work ok. If I get a solution to the above I hope to jigger it to fit.
DMax + 1 Hour
Jul 1, 2006I've searched the forum and can't quite find what I need so I'm asking for further guidance form all you Access masters out there!
I have a field 'Time' in the format of 'dd/mm/yyyy hh:mm' which has a default value of =DMax("Time ","[Monitoring]")+1.
This increments 1 on the 'dd' bit when each new record is created, however what I want is for the hour (hh) bit to increment 1 on each new record.
Not sure if I'm being niave but I thought it was some sort of formatting issue, so I've dabbled with a few but to little effect unfortunately.
Dmax And Its Format
Oct 13, 2004I want to create fields that are in the form IC0000001, IC0000002, etc. I can do the increment in the numbers by using the dmax function but how do I add the alphabets before it? How can I start with 0000001 instead of 1? Any help would be greatly appreciated, thanks so much!
Swee
Table Linking
May 19, 2005Ok...I have an issue that I don't know how to resolve.
I have a table called 'orders' in the orders table there is a place for " quantity', 'colours' and per unit. The cost per unit is based on quantity and colours.
For example: 12-35 shirts 1 colour are $2.85 per unit. 12-35 2 colour are $3.50 and so on.
I would like to be able to put in the quantity and # of colours and the Unit price fills in a field.
I don't know how I can accomplish this.
Linking Just One Table
Sep 4, 2006I have created an Access database application that is stand alone for each account manager/client at our business except for one table that I want shared as a source of data across all separate databases that are created.
I've investigated automatic Database Splitting and this works, except I only want the one table to be split and the others remain unique to each database.
I tried exporting the table in question to another Access database and then linking the table into each other database, this seems to work except that referential integrity can't be set up as it was. Is there any way to keep the integrity between the external database and the databases it links to?
Thanks in advance for any advice.
Linking A Table
Jan 20, 2005Hoi,
I'm using 2 databases. The first is my working database (LiTiMA.mdb) the second database (LiTiPA.mdb) is just for the password table.
There is no link between the 2 databases. But when I open a form for editing the password in LiTiMA, a connection need to be created between the 2 databases.
If the form is closed the connection need to be removed.
Does someone know how to do this?
thanks
Koen
Dmax - To Return Not Quite The Highest
Jan 18, 2006Hello,
I am using DMax() to return the highest date in a table, but really need it to return the second-highest...so, if I had:
14th Feb
10th Dec
1st Jan
I don't want it to return 10th Dec, I want it to return 14th Feb
Any help much appreciated. I am sure there was something like dmax()-1, but that just returns (in my example above) 9th Dec!
Thanks!
New Entry Button DMax
Dec 4, 2006Hello peeps!
Just someone advice if I can!
I have a table that contains student details:
StudentNo
Surname
Forename
I have created a form to add students to this table but I need a button that will read the highest StudentNo and then add one, putting the new stundent number in the form in a new record?
How can I go about doing this? Can it be done using a macro or do I need to use VBA??? I have been told that I would need to use the DMax function but I dont know VBA.
Thanks in advance for all your help
DMAX In A Text Field
Mar 24, 2008Hi
I have a table with three key fields
table name is tblSampleDetails
Field names are
ClientSampleRef
BatchNumber
Visual
A Batch may have many samples of which some may be visuals
Currently I store a variety of values (some number, some text and some a combination of both) in ClientSampleRef but I would like to start on some samples creating the value for the ClientSampleRef
If the sample is a visual (this is indicated by a check box on the form giving a value of -1) I would like to make the ClientSampleRef = Visual 1 this would then increment within the same batch by one each time.
I have taken some code from Dev Ashish and Arvin Meyer and changed the field and table names but I am getting an error saying there is a missing operator
If Check42 = -1 Then
Me.ClientsSampleRef = "REC-" & Right(DMax("ClientSampleRef", "tblSampleDetails"), Len(DMax("ClientSampleRef", "tblSampleDetails")) - InStr(1, DMax("ClientSampleRef", "tblSampleDetails"), "-")) + 1
End If
I am just testing this code so I have created a record with a value of REC-1 in the field ClientSampleref
I have also created a test database and the code works within that upto a value of REC-10 then I get problems
any help or pointers greatly appreciated
Richard
DMax And DateDiff Func
Jul 13, 2005HI All,
I'm using
Between DMax("DateFieldName","TableName")-10 And DMax("DateFieldName","TableName") expression
in query to find time interval 10 days prior the last record puting this into Date field in my query Criteria. It's working fine.
But I want to find time interval a Month and an Year prior the last record.
I'm thinking to use DateDiff func to calculate properly intervals.
Between DMax("DateFieladName","TableName")-DateDiff ("m",1-2-100,1-1-100) And DMax("DateFieldName","TableName") --> for a month
That function also work but I'm not sure if it calculate correct result
Any better ideas? Thanks!
:cool:
DMax() For Sequential Autonumber
Jul 23, 2005Hello Access friends,
Trying to have a sequential autonumber for the ScreenID with the DMax () function.
Please advise on what is wrong with the following :
=Nz(DMax("[ScreenID]","[Screenprep]","[ScreenID] = '" & [CarModel] & "-" & Left$([Category],1) & "'")+1,0)
Neither putting this code in control source or beforeupdate event of the form is not working.
I have looked around and from previous posts in the forum come up with this module. But it is not working either:
Public Function NewScreenID() As String
Dim db As DAO.Database
Dim rst As DAO.Recordset
Dim ScreenID As String
Dim CarModel As String
Dim Category As String
On Error GoTo Err_Execute
Set db = CurrentDb()
Set rst = CurrentDb.OpenRecordset("SELECT Max([Screenprep].[ScreenID]) AS MaxScreenID from [Screenprep];", dbOpenSnapshot)
If IsNull(rst!MaxScreenID) Then
NewScreenID = [CarModel] & "-" & Left$([Category], 1) & Format(1, "0000")
Else
NewScreenID = rst!MaxScreenID + 1
End If
rst.Close
Set rst = Nothing
Set db = Nothing
NewScreenID = ScreenID
Exit Function
Err_Execute:
'An error occurred, return blank string
NewScreenID = ""
MsgBox "An error occurred while trying to determine the next sequential number to assign."
End Function
In advance thank you for your time.Can someone please guide me on how to sort this out?
Urgent Dmax Help Required
Jun 4, 2006Hello gentlemen,
My main form contains a Entry_No (Text – Not duplicate) field. I used following code in the same form in a command button’s OnClick event to increment integer value of Entry_No to “Issue-1”, Issue-2”, “Issue-3” & so on.
Dim strmax As String
strmax = DMax("[Entry_No]", "T_Drug_Receiv_Head")
Me!Entry_No = "Issue-" & Right(strmax, _
Len(strmax) - _
InStr(1, strmax, "-")) + 1
No problem with above code. It works fine.
The record source of the main form initially was based on query which I removed later. I placed following code to display only the last record while form opens (on Open event). This is a try due to very large table and I don’t want my form / query to load all 90,000 records into the memory at one time that takes time.
I placed a unbound text box (TxtMaxt) to disiplay Entry_No field of last record of the table which is ok.
Txtmax = DMax("[Entry_No]", "T_Drug_Receiv_Head") ‘ This is OK.
Dim NSSQL As String
NSSQL = "Select * from T_Drug_Receiv_Head where [Entry_No] = Txtmax"
Me.Form.RecordSource = NSSQL
Me.Refresh
When I open the form, it asks me ‘Enter parameter value’ for ‘Issue’. When enter something then dialog closes and form appears with blank record except showing displaying Entry_No field of last record of the table in the Txtmax unbound text box.
When I removes code from on open event and selects query that was set before as record set, it works.
Where might have gone wrong?
With kind regards,
Ashfaque