Modules & VBA :: Distinguish If Data Already Exists In A Table
Aug 22, 2013
I currently need a way to check to see if a a field already exists. To be exact I have an access application that imports data from multiple sources and saves the file name of these imports into an import tracker table. The table has four fields, file name, Date Imported, Import Type, and Number of Records. I am writing some code that checks a Boolean given by a form. If the Boolean is true It skips over checking.
If it is false It needs to check my import tracker file names to see if the file was already imported. If it was then it will skip over the file and the algorithm will check the next file given by an array. So I was wondering..How would I go about making it check if the file already exists in the table. I was thinking of turning the File Name Field into a primary key, since there will only ever be one File Name of every type.
I am trying to achieve the following - I want to query a table to see if a record exists with a particular field blank. If so, I would like to prompt the user for data.
In real world terms, when assigning an item to a user I would like to first make sure that the item is not already assigned to somebody else. I have 4 fields, UserName, Item, IssueFrom, IssueTo. So when an item is assigned to a user, the first 3 fields are populated and the IssueTo remains blank, until that item is assigned to somebody else.
At the minute I have nothing in place to prevent a user from assigning the same item to multiple users and having multiple records for the same item in the table.
I have a table and a form with continuous records (218 items). In a different table I have the status of these 218 items. In design view of the form I have added a label at the end of the record.
I want to use the DMax to set the caption of that label to the status of the particular item, but it sets the status of all 218 items to the status of item 1. How do I get it to distinguish between the records.
I guess somehow the record source for that label must be changed to the status table after form has loaded, and then run through all records and update the label caption.
i have a form contains unbound listbox , that accumulates values of a field in that form "SalName" , when i move between records of this form i want the value that is in the current record is distinguished in the Listbox ( only where the SalID=SalID).distinguish by A special colour ,Font,undeline.
I currently have an access database for tracking company assets and performing maintenance tasks on them.We also have a number of Stores Stock Items that are controlled under a separate finance package.We currently have forms that create individually numbered "Job Cards" in the Job Cards Table..we input the data and manually type into a Text Box the we have used 'X' number of Store Stock 'Item Y'
I have then use a query to export the data i need (Job number, dates, location and Store Stock Items).But I have to manually re-construct the data and items into separate lines in an excel sheet for a paste operation into the finance package (lots of typing of 16 digit stock codes)
What i want is to use a second table (linked via the "Job Card#" key).It will be called "Stock Items" which has a separate field for each of our stock items.the user then just opens second form while creating the job that immediately creates a new record.The user then simply has to put the number of each item used in the relevant text box on the form and close.
example of datasheet view Job# __ ItemX __ ItemY 2417_____3_______7
Now, I have all of that working as I want, But i nee to be able to combine the data from each field into a single field (either in access or excel).What I want to see is a field containing 3x ItemX, 7x ItemY, etc
if there are none of one or more items, I don't want anything displayed for that item (blank space is ok)I have 30 or more stock items, so there will be 30 or more columns in the table. the actual data stored in the table is simply the quantity of each item used.
this data is used twofold,on export to Excel I can split the data into new cells and it's used on a despatch note that is returned with the item so the end user can see the items that were used in the repair.So it needs to be done upon saving the record, record by record.
I have created a form which enbles users to enter data into the fields which will add a new record to my table. What I am trying to do now is to create some kind of validation rule that will check whether the record already exists.
I need it to work this way; there are four input fields- 3 text and 1 is a date filed. When the user enters a new record they are not allowed to create a record that conatins the same combination of values. So if one record has for example filed 1 = 1 field 2 = abc field 3 = def; then no other record can have the same combination of values.
If the user enters an already existing combination there would be an error message saying which field is incorrect. If the combination doesn't exist it would add the record and display a message that the record was successfully added.
I have a main form which employees use to report their bi-weekly time. The main form is automatically assigned a [RecordID] and the employee must select their [Profile] from a combo box. This main form contains (2) sub-forms. Both sub-forms use the same data source table.The first sub-form is visible in the body of the main form and linked by the [RecordID] and employee [Profile]. The employee enters each date worked and hours for the reporting period.
The second sub-form is hidden and linked to the main form by the employee [Profile], basically keeping a running ledger of all the dates and hours reported by the employee. What I would like to do is have a message box appear if the employee mistakenly enters date that has already been reported.
I have an application that I have automatically checking to see if tables are valid and connected, etc. If the app finds that the tables aren't connected or aren't working, it automatically tries to re-connect those tables in the background without the user's knowledge. The time I'm having trouble is if the SQL Server doesn't exists (the back-end tables are on a SQL Server). I would like to check to see if the SQL Server exists before I try to re-connect tables so that no SQL Errors pop up but I'm not sure how to figure that out with VBA.
I have a form, which has a combo box which a user can select an employee - the combo has three columns (Employee_Number, Surname, Initials) although the Employee_Number column is set at a 0 width, so not visible.
The form is bound to a query which only shows records that are 'Active'
When a user selects and employee in the combo box, I want the AfterUpdate event to check and see if there is already an active record - if there is, throw up an error message and then reveal a couple of buttons giving choices what to do next; if there isn't an active record, reveal three textboxes and then populate those textboxes with the values from the three columns from the combo.
The bit that is sticking me is the search - - I have tried DCount, but can't seem to get it to work
Here is the section of code that I am battling with:
Code: Dim EmpNo As String EmpNo = cboEmp_Check.column(0) If DCount("Employee_Number", "Incomplete_Training", "Employee_Number=" & EmpNo) > 0 Then MsgBox "Existing", vbOKOnly
I'm trying to view a pdf in a form if the file exists. My search has brought me to trying the WebBrowser control. I have it loading the file but it launches Adobe instead of just showing the PDF in the window on the form.
How to search for a file using the dir function, however, i need to search for a file from a main folder which may have several sub folders.
I am having no luck so far - i understand there is a recursive search facility but im not sure how i can get this to work with what i am trying to achieve.
This is the code i have for the dir function:
If Len(Dir("as-tamworth-50midlands.qa$TamworthLaminate C of CsCircuit Foil" & CofC & ".")) = 0 Then MsgBox "This file does not exist" Else MsgBox "Yippee" End If
I can already send emails out as PDF files when an email address exists, however, I'm trying to validate whether or not an email address does actually exist. My problem is, there are four possible locations where an email address could be: MainEmail or Contact1Email or Contact2Email or Email (the last one - Email - is in a separate table).
Four text boxes exist on the form that is being actioned (the form is based on a query to extract the relevant information) and are available to test for an email address being present. What I'm struggling with is ensuring that the 'To' box in Outlook always gets populated or Outlook chucks a hissy fit. I have been trying various IF Then Else and Do Loop plus a myriad of other ways but none are reliable, especially if no email address is present which can be the case.
I have code working for some workers here ,who used to save excel files in a folder and my databse upload those files into database and then do the rest.I am looking for a code in vba which,on upload button matches the file in table and if the file already exists ,it should not upload again in the table and if it does not exists it should upload . I have attached my code below :
Private Sub Command0_Click() Dim strcPath As String strcPath = "O:QA FilesQC ReportingPending Review" Dim strcNewPath As String
I am trying to check if a record exists, but I keep getting a error!!!
Private Sub Command10_Click() If DCount("*", "tbl", "[ID] = "") <> 0 Then MsgBox "This record already exists. Else stDocName1 = "McrAddNewRecord" DoCmd.RunMacro stDocName1 End If End Sub
I've made a form where the user can fill in a field ID... and than by clicking on a button another form will be opened with the data of that person (with that ID that's filled in). But if the user fill in an ID that is not currently in the database, there will be also shown another form, but than with no data.. Now I want that if the ID is not known, to display a message or something (like "this ID is not known, try again") and not to open the form..
I've used the following code under the button:
Private Sub openenFormulier_Click() On Error GoTo Err_openenFormulier_Click
Dim stDocName As String Dim stLinkCriteria As String
I have a module that I am using to verify that file paths in my table point to valid jpg files. The table has grown quite a bit since I first created the module and it has gotten to the point where it's taking too long for the module to execute. I'm in the process of trying to change the record set for the module from the table to a stored query procedure but it's turning out to be a little tricky for me. When I execute the following module, I'm not getting any error code, it just doesn't seem to do anything at all. The bits in red are the parts I've changed. Before that the module executed as I expected it would.
Code:
Sub TestIt2() Dim strFileName As String Dim db As DAO.Database Dim rs As DAO.Recordset Set db = CurrentDb() Set rs = db.OpenRecordset("QryUpdateRevisionHistory")
I am storing values of pictures and the location of them in a table, this works fine!... using OpenRecordset. The problem is that when the function is called to store the information, it just keeps adding the same values of each file in the folder over and over again in a word "Duplicating" the information.
I have tried various methods using the OpenRecordset, but cannot seem to find the correct manor of applying the code.
Below is the function I have for storing the data...
Code: Public Sub GetFilesNamesFromFolder(strFolderPath As String) On Error GoTo ErrorHandler Dim objFSO As Scripting.FileSystemObject Dim objFolder As Scripting.folder Dim objFile As Scripting.File
I have a report that prints invoices, and in the page header area it contains most of the invoice information such as labor cost, customer info, etc. In the detail section of the report i have the line items, and a line contains a part, vehicle charge, etc. Some invoices dont have any line items though, and it seems that when there are no lines(ie. nothing in the 'detail' section), the header information will not appear either. Any ideas on how i can fix this?
I keep getting the error message "Table TempMsysAccessObjects already exists" when I try to compact/repair my database. The only help I've found in the MS knowledge base just says to delete the table. I keep deleting it, but it keeps coming back. I've tried the decompile cmd line option, no change. Do I need to just rebuild this db, or what?
the problem is that sometimes the table doesn't exist... Instead of trapping the error code, is there a way I can check to see if the table exists? If it doesn't I'll simply skip this step of my code and move on.
I have tried the attached code from a previous post http://www.access-programmers.co.uk/forums/showthread.php?t=98727&highlight=table+exists but some of the code doesn't work on Microsoft Access Project. Does anyone have any ideas how I would amend this code so that it works?
I know this can be done i MySQL and with SQL Server but is there a way to drop the table but check if it exists first in Access before running a query ?
I have a problem where a user would enter a project code eg 113-099. I put in a list box that filters all the project codes for instance if the user enters 1 it will show all codes starting with a 1 and every additional number they enter it filters the list box to show which codes already exists! I hope this makes sense.
The problem i have is i need to check when they enter the project code that it is a unique value. The Database developer we got in didnt index this field as no duplicates allowed and as result we have large amount of duplicate project codes.
I have started to experiment with Dlookup but with no great success.
If anyone can help it would be much appreciated as i dont have much experience with access.
The field name on the form is
[forms]![projects_frm].[project_job_number] and the table which stores this information is [projects]
Is there any way to check if a particular table already exist in MS Access Database using ACCESS VBA?
Actually I'm creating temp table on the file but I want to check if temp table already exits then need to delete before creating.
e.g. I can check if query defniniton already exists using below code:
Code: If .DCount("[Name]", "MSysObjects", "Left([Name],1) <> '~' AND [Type] = 5 AND [Name] = '" & strTempQueryName & "' ") <> 0 Then .DoCmd.DeleteObject acQuery, strTempQueryName .CurrentDb.QueryDefs.Refresh End If
