Modules & VBA :: Check If Multiple Values Exist?
Jun 17, 2014
I am making an asset table which amongst other fields have fields for "serialNo" and "Manufacturer"
I am trying to write some code that after update of manufacturer in the form, will check to see if that serialNo and Manufacturer exist.
ive managed to do it for one value, using
If Not IsNull(DLookup("[serialno]", "Assets", "[serialno] = '" & Me!serialno & "'")) Then
msgbox "blah blah"
which works great, but am struggling when i'm asking it to lookup two values.
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Jan 27, 2015
I'm trying to write some Code with the target to take a value from a textbox (out of a form) and a pregiven value (in this case = 2) and enter them in a new record in a table. But only if there is not already a record with the exact same combination of these to values. When done, the same button should proceed you to the next form (but this code is not already implemented in the fragment below) even if no values are added because they already exist in this combination.
Code:
Public Function GetID_PatientStudiesGroup&()
GetID_PatientStudiesGroup = [Forms]![frm_PatientStudiesGroupTZP]![ID_PatientStudiesGroup]
End Function
Private Sub BPRS_T1_Button_Click()
Call GetID_PatientStudiesGroup&
Dim strSQL As String
[Code] ....
As you can see, I tried to use a function to refer to the value out of the form, because I didn't find out how to refer to a form in an SQL Code.
Just to give you a better overview: The table where the information should be added is named "tbl_PatientStudiesGroupTZP". The form where you find the Textbox "ID_PatientStudiesGroup" (with the value I need to transport) is named "frm_PatientStudiesGroupTZP". Every part (except the WHERE NOT EXISTS part) worked perfectly for itself, but not when thrown together.
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Jul 14, 2015
I have run into an issue with a basic DLookup. The database has grown in size and now we could have multiple entries, but I want it to return a certain one. So the information could be in it three times. Of course DLookup stops after the first one. How do I get it to loop to check the entire table? Someone mentioned to me to use a recordset, but how to write that as I have never used it before. Below is what I was using until this new request came up.
<code>
Private Sub txtloan1_AfterUpdate()
If IsNull(DLookup("[loan1]", _
"settlement", _
"[loan1]=""" & Me.txtloan1.Text & """ AND [status] = 'Open'")) = False Then
Cancel = True
MsgBox "Test", vbOKOnly, "Warning"
End If
End Sub
</code>
This was also executing after the user entered the information within a text field. I did not want them to enter all the data and then have it come back as a duplicate.
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Sep 13, 2013
I found and modified this code to allow me to check (fast) if a file exist on a http server or not (without downloading it).
Code:
Public Function CheckNetFile(WebFile As String)
Dim XmlHttpReq As Object
Set XmlHttpReq = CreateObject("Microsoft.XMLHTTP")
XmlHttpReq.Open "HEAD", WebFile, False
[Code] ....
In the above code I managed to declare Webfile as a string so I can call on it later but one thing I still need to tweak is to also get a result out of the test code in a better way than having to publically declare the "CheckNet" variable somewhere else in my app.
First prize would something like this:
If CheckNetFile ("http://www.mysite.co.za/test/test.txt") = 1 then "Yes" else "No"
How do I build the 'booleon check' into the original function?
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Aug 5, 2013
I'm having trouble viewing values that exist in table 'tblTest2' to the user. The first set of code (below) doesn NOT work. Yet the second set of code (all the way at the bottom) DOES work. And by work I mean that it erases the old values and only puts the tblTest2's new values. The first set of code has values but they are not the right ones. The second set of code has the correct values for its statement...
Code:
strTable = "tblTest2" 'Table for storing values for viewing purposes
DoCmd.DeleteObject acTable, strTable 'Delete tblTest2 old values
CurrentDb.Execute "CREATE TABLE tblTest2 " _
[Code].....
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Nov 27, 2007
I would like help with a macro that looks to see if a record in my database table exists, then if it doesn't it adds a record with my data, but if the records does exist, it stops the routine and sends a message box to prompt if you want to continue with adding a new record.
The problem that I'm having is that my macro errors out when it doesn't find a record. I just want my macro to just see if a record exists or not. Then I can write my Iff statements based on whether it finds our or not. How do I just have my macro check for an record, then if it doesn't exist tell that it doesn't exist and not stop my macro. Is there some kind of IfExist() function or something?
Thanks for any help anyone can give me.
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Jan 26, 2005
Hi,
I put a Dlookup function to compare the new entry in a form and the code is like this:
If (Not IsNull(DLookup("[empno]", "Attnd_tbl" , "[empno]=[empnotxt]")))then
MsgBox "This Employee Already Exists"
cancel = true
Me!empnotxt.undo
end if
end sub
this works for comparing one field only, since I want to check if the employee is already entered on a certain date, how do I put two fields in this function to be looked up if for example "[empno]and[date]","Attnd_tbl","[empno]and[date]=[empnotxt]and[datetxt]"
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Sep 15, 2014
I have a bit of code that uses controls on a form to batch add records to the tables. Before the code executes, it needs to do a check to make sure that all of the needed data has been supplied.
Code:
If IsNull(txtDateAdded) Then
MsgBox "Please supply the date that the Label record was created"
Exit Sub
Else
If IsNull(cboRecordCreator) Then
[Code] ....
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Feb 2, 2014
I have got like subform which I think is the tech term I use it to filter dates on field "date raised" and open's a report depend on date's entered in txtstartdate and txtenddate it works perfectly but I need to add some check boxes to check other field's are true/false ...
Code:
Private Sub cmdPreview_Click()
Dim strReport As String
Dim strDateField As String
Dim strWhere As String
Dim lngView As Long
[Code] ....
I need to add code to the text in red well I'm guessing
here goes with what I would like to add
job cancelled1 check box name field name= job cancelled
job on hold1 check box name field name = job on hold
void property1 check box name field name = void property
E.g. if I put date range in my date boxes and tick job cancelled show all record in that date range cancelled same with job on hold and void property
here some code I did but wont work as it not in the same strwhere above
Code:
if me[job cancelled1] = true then
strwhere = [job cancelled] = 1 'field name
else
strwhere [job cancelled] is null
end if
Some how need to add the strwhere to the code above ...
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Feb 28, 2014
How can I check if a table contains blank fields/values.
If there are blank fields I want to replace them with 0.
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Jul 23, 2015
I have a parent form which has a yes/no checkbox in the form's record source. Then in that parent form I have a sub-form. If NO records exist in the sub-form I want the checkbox to be UN checked. If records DO exist in the sub-form, I want the checkbox to be CHECKED.
But I want this to happen as records are added or deleted from the sub-form. In other words, if the parent form is opened and no records exist in the subform then the checkbox should be unchecked. But as soon as the first record has been entered in the subform, the checkbox on the parent form should be checked. Likewise, as soon as the last record has been revoved from the sub-form, the checkbox on the parent form should be unchecked.
What code do I need to accomplish all of this?
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Jul 26, 2013
I have the following VBA code that auto populates a word template:
Private Sub Command24_Click()
On Error GoTo ErrorHandler:
ErrorHandler:
[Code].....
The code executes flawlessy but there are three values that are based off check boxes set as YES/NO (EMPLOYEDATREGISTRATION, EMPLOYED and FRINGEBENEFITS). These values show up as -1 for YES and 0 for NO.
Is there anyway to add code to mine that would allow me to change these values before they are sent to the Word template?
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Feb 4, 2014
I have value in the form call (welder) & based on the other data i will enter in form i need VBA to check if this welder is certified to do the job or not.
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Sep 2, 2014
In sheet 1, In column A all the Batch numbers are present. So I want to check if each of these is present in Access table named "tblmain". If its present then display its corresponding Policy number in Column B of attached workbook.
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Mar 12, 2014
Basically, what's the best practice or how do we store a query's value into an array then checking what the max or min value is and how to check if let's say "4" is in the array?
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Dec 27, 2014
When UseDDelivery is checked the three textboxes should be disable and when the form is opened UseDDelivery is set to be checked by default so the textboxes should be disabled when the form opens but they aren't. the two different ways of doing it are shown below.
Elements specific to my system :UseDDelivery = checkbox
AltDeliveryAddress = textbox1
AltDeliveryTown = textbox 2
AltdeliveryPostcode = textbox3
Solution 1:
Code:
Me.AltDeliveryAddress.Enabled = UseDDelivery.Value
Me.AltDeliveryTown.Enabled = UseDDelivery.Value
Me.AltDeliveryPostcode.Enabled = UseDDelivery.Value
This is a bit of vba a friend wrote for me quickly, it includes all three textboxes but the checkbox enables them instead of disables.
solution 2:
Code:
Private Sub UseDDelivery_AfterUpdate()
If AltDeliveryAddress.Enabled = True Then
AltDeliveryAddress.Enabled = False
Else
AltDeliveryAddress.Enabled = True
End If
End Sub
With this bit of vba I found the checkbox enables the textbox instead of disabling it and I can't figure out how to include the other two textboxes
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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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Jun 5, 2014
I have a form in which the user has the privilege to download some data from the table.the user will paste some of the numbers to the textbox from the excel in order to download the specific data.i need to write a query to parse the textbox using the in condition
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Jan 29, 2014
I am looking to check 3 sub forms for values and if they contain any then delete them. After a bit of googling I discovered that you should use recordset.recordcount - to which I tried but I get method or data not found - is this a valid method?
My code to which Im using is:
If Me.NoneChargeable_Admin_subform.Recordset.RecordCount >= 1 And Me.NoneChargeable_Manufact_subform.Recordset.RecordCount >= 1 And Me.NoneChargeable_Research_subform.Recordset.RecordCount >= 1 Then
DoCmd.RunSQL "DELETE NoneChargeable_Admin.*, NoneChargeable_Manufact.*, NoneChargeable_Research.* " & vbCrLf & _
"FROM NoneChargeable_Admin, NoneChargeable_Manufact, NoneChargeable_Research;"
End If
DoCmd.Close acForm, "NoneChargeableHrs_frm", acSaveNo
End Sub
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Dec 29, 2013
I am trying to use a list-control on a form to let the user select multiple values. I have understood that this requires some VBA-code to step through the selections in the list, since the "multivalue-selection" is set to "Extended".
When I try to execute the code I have (found and have tried to adjust), then I get the error message "Object required". The "ListCount"-paramater always only results in a ZERO-value, when i step through the code:
Function cmdOpenQuery_Click()
On Error GoTo Err_cmdOpenQuery_Click
Dim MyDB As DAO.Database
Dim qdef As DAO.QueryDef
Dim i As Integer
Dim strSQL As String
[code]....
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Jan 11, 2014
Trying to run a query where each 4 fields calling a custom function will not just re-run the same custom function over and over again for each field in a single record.
A Function has a huge amount of multiple queries and logic to perform.The Function returns a Integer, Integer, Integer, and optional Integer. Each integer requires a DLookup to lookup a String description value for each individual integer (in each of 4 fields).
The problem is, the DLookup in each column that runs against each of the integers re-run the same function.The result is that a single record, each of the 4 columns returning a single of the 4 values, the complex function is re-run 4 times.
The function is huge, part of a Business Rules Engine. Depending on the Rule-Meta data - it might launch up to a dozen queries and perform logic steps for each record. This is not the ordinary SQL Query.
Imagine if one record (for 1 field) takes 0.1 second to run. By referencing the function in 4 columns, this same function is re-run 4 times (0.4 Seconds) Against 50,000 records - this duplication of re-running the function for each column can really add up.
Possible Solutions: Researched Class Modules - There is a comment that the property Get, Let actually reduce performance. There are huge advantage of code documentation, documentation and centralization.It doesn't claim class modules reduce execution as each propery is returned. It also describes that Class Modules can't be called directly in a Query - unless each property is wrapped in a function.
Function Returns one String with delimiters: e.g 34;54;55;1 This single column goes into a Make Table (runs function one time per record) Then the D-Lookup is run against static local data. This pevented the function from being run over and over across the network linked data.
Final Solution: Eventually, the many hundred lines of VBA code for the Rules Engine will be converted into SQL Server T-SQL Functions on the server.For a Rule Engine development, Access has been great for a rapid protoype development and testing. The TSQL will be a final big step requiring re-coding. It is not currenty my option for the delivery time frame.
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Mar 14, 2014
I have to join multiple values into a string for summarizing data on reports and exports. This process in vba is taking up to 10 minutes to process and will get worse as the size of these reports grow.
My method so far is to query the individual items into a recordset, loop through the values, adding them to the string then return the string in the query.
Here is an example:
Public Function SO_Description(intSO As Integer) As String
Dim db As DAO.Database
Dim rs As DAO.Recordset
Dim strSQLSelect As String
SO_Description = "Profiles: "
Set db = CurrentDb
[Code] ....
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Mar 1, 2015
I'm having problems creating a second subfolder in the main folder.
The main folder is used to keep inside the reviews of clients inside.
The code I have now, will only create a main folder if it does not exist and then a subfolder with the BIN nr, type review and date. If the client would have a diferent ones and in diferent years. So if it has first "Prototype Model", the next one could be "Prototype Review". The part of the code that checks if the main folder exist works, but how to let the code create in the main folder the second review subfolder? Please see below code I managed so far:
Code:
Private Sub btn_Create_Folder_Click() 'XXXXXXXXXX working onXXXXXXXXXXXXXX
Dim path1 As String
Dim path2 As String
path1 = "C:Test_FolderMedium" & Me.BIN & "_" & RTrim(Me.LE_Name) & ""
path2 = "C:Test_FolderHigh" & Me.BIN & "_" & RTrim(Me.LE_Name) & ""
[Code] ...
How to have the code test both of them?
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Feb 14, 2015
I want to do it bring up a form from which the user can send an email, and on the form is an unbound text box [Text1] in which the user can paste the attachment path.
Code:
Dim olApp As New Outlook.Application
Dim mItem As Outlook.MailItem ' An Outlook Mail item
Set olApp = CreateObject("Outlook.Application")
Set mItem = olApp.CreateItem(olMailItem)
' Add the To/Subject/Body to the message and display the message
[Code] ....
So, when I paste the file location into Text box [Text1] I get the Run Time error that the path does not exist or is not valid. Yet when I use the next line which is the same path, all is OK.
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Jun 9, 2015
I currently have this set as the forms default recordsource (which works just fine):
Code:
SELECT TOP 5 tblUsers_Phone_Book.EMAIL_ADDRESS, weightedDL('me@mine.com',[EMAIL_ADDRESS]) AS Expr1
And I have this vba to dynamically switch around that email address.
Code:
Private Sub Form_Load()
Dim intPos As Integer
Dim strControlName As String
Dim strValue As String
Dim sSQL As String
If Len(Me.OpenArgs) > 0 Then
' Position of the pipe
[Code] ....
If I msgbox the sSQL - it shows identical to the default recordsource but I get the error:
The error message I get is:
Run-Time error '2580'
The record source 'SELECT TOP 5 tblUsers_Phone_Book.EMAIL_ADDRESS, weightedDL('me@mine.com',[EMAIL_ADDRESS]) AS Expr1' specified on this form or report does not exist.
I tried copying the exact working default sql into the vba and get the same result.
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Jan 17, 2015
I want to check if data entered in a form field is existed
The form is bounded to a table
I used this code
If DLookup("Telegram_Number", "tbl_Violation_Of_Building", "Telegram_Number Like " & Forms!frm_Add_Violation_Building!Telegram_Number) Then
MsgBox ("number existed")
Me.Telegram_Number = ""
Else
End If
everything is ok but if the data is existed the database show the message and clear the field but i'm getting a Run-time error
'-2147352567(80020009)': the macro or function set to the beforeupdate or validationRule property for this field is preventing [ISF] from saving the data in the field
I guess the problem because the form is bounded to a table so he will save automatically
My solution is to unbound the fields and save the data via vba but is there any solution with a bounded form???
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