Updating fields in access
I normally do not Cascade Delete for related records as I usually maintain a History table to keep all of the records I have deleted as a way of maintaining a history for my database information.
Below is code in excel vba that I'm trying to adapt so that it will allow me to update multiple records in a Access table. This is so I can update all the records in the Access table by ID.
You must enforce the Referential Integrity rules first then you can put a checkmark in Cascade Update Related Fields. This is just a way to save you time and effort in keeping your data accurate.
Let’s take a look at the information in these two tables.
There it gives me the error: Either BOF or EOF is True, or the current record has been deleted. You can also see that I'm using a cell range to connect to the Pop ID in the SQL Statement. Screen Updating = False ' Prevents screen refreshing.
This is how the data in the excel sheet is connected to that in the Access table. Select Start Row = 2 ' Enter row in sheet to start reading records s SQL = "SELECT * FROM tbl Population WHERE Pop ID = " & lng ID Set cnn = New ADODB.
The following code checks which forms are open, and tries to create a unique filter string for the current record in order to move the forms bookmark on re-opening. Attributes And db Auto Incr Field) = db Auto Incr Field Then str Criteria = "[" & fld. Value ' Found identity (autonumber) field, so exit... Value) = False Then ' Just use numeric fields (you could alter this to include string and date)... Type = db Long Then str Criteria = str Criteria & "(" & "[" & fld. Value & ") AND " End If End If Next If Len(str Criteria) 0 Then lng Formcount = lng Formcount 1 varr(lng Formcount, 1) = . Open Form varr(i, 1) With Forms(varr(i, 1)) Set rs = .
See for yourself by just opening the related table! To hear about the latest Office 2010 news, blogs, and training, subscribe to our newsletter. If you want to learn more, check out some of our Microsoft Access 2010 training classes!' ' You are free to distribute and use this code as you wish ' but please credit the original author (by leaving this notice intact). i = 0 lng Formcount = 0 For Each frm In Forms With frm If . ' Public Sub Update All Open Forms(By Val str Form Name As String) Const cstr Proc Name As String = mcstr Module Name & "Update All Open Forms" Dim frm As Form Dim rs As Recordset Dim fld As Field Dim lng Formcount As Long Dim i As Long Dim str Criteria As String Dim varr() As Variant Const con Design View As Long = 0 ' Ignore any errors... Form Name con Design View Then str Criteria = vb Null String Set rs = . ) instead of a list of fields if you want to access all fields from the input table (raster and BLOB fields are excluded).However, for faster performance and reliable field order, it is recommended that the list of fields be narrowed to only those that are actually needed. Additional information can be accessed using tokens (such as .
Search for updating fields in access:
An SQL prefix clause is positioned in the first position and will be inserted between the SELECT keyword and the SELECT COLUMN LIST.