How to update column in TableA based on matching IDs in TableB

Try this SQL

Update TableA TA Set Country=(Select Country From TableB Where ID=TA.ID)

It should be something like:

UPDATE TableA
SET COUNTRY = (SELECT TableB.COUNTRY FROM TableB WHERE TableB.ID = TableA.ID)

Thanks for the code, will try them when I return home later.

Update TableA Inner Join TableB
On TableA.ID=TableB.ID
Set TableA.Country=TableB.Country

Hello,

I tried the code below, but the receive the following error: Operation must use an updateable query.
on line da.Fill(dt1).


  Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\aopt2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=test"
        Dim da As New OleDb.OleDbDataAdapter("Update AOP6A AOP5 Set CA2=(Select Country From AOP5 Where SN=AOP5.SN)", ConnectionString)
        objConnection.Open()
        Dim dt1 As New DataSet
        da.Fill(dt1)
        da.Update(dt1)

Thanks,
Victor

post the actual names of the tables and field names

Tables: AOP6A, AOP5
FIELDS: CA2          FOR AOP6A
             Country    FOR AOP5
I need to separate the countries in CA2 by a ",", for example BEL,CAN,FRA,USA

Thanks,

Victor            

Update AOP6A Inner Join AOP5
On AOP6A.ID=AOP5.ID
Set AOP6A.CA2=AOP5.Country

I am trying your code but I'm receiving the following error on line da.Fill(dt1):
Syntax error (missing operator) in query expression 'AOP6A.ID=AOP5.ID AOP6A.CA2 = AOP5.Country'.

Code:

 Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\aopt2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate"
             Dim da As New OleDb.OleDbDataAdapter("Update AOP6A Inner Join AOP5 On AOP6A.ID=AOP5.ID AOP6A.CA2 = AOP5.Country)", ConnectionString)
        objConnection.Open()
        Dim dt1 As New DataSet
        da.Fill(dt1)
        da.Update(dt1)
        dt1.Tables(0).AcceptChanges()

vcharles,
copy the whole statement

Hello,

Below is the full statement

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
        Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\aopt2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate"
        ' Dim da As New OleDb.OleDbDataAdapter("Update AOP6A AOP5 Set CA2=(Select Country From AOP5 Where SN=AOP5.SN)", ConnectionString)

        Dim da As New OleDb.OleDbDataAdapter("Update AOP6A Inner Join AOP5 On AOP6A.ID=AOP5.ID AOP6A.CA2 = AOP5.Country)", ConnectionString)
        objConnection.Open()
        Dim dt1 As New DataSet
        'da.Fill(dt1)
        da.Fill(dt1)
        da.Update(dt1)
        dt1.Tables(0).AcceptChanges()
    End Sub

vcharles, this is what i posted

Update AOP6A Inner Join AOP5 On AOP6A.ID=AOP5.ID Set AOP6A.CA2=AOP5.Country

Select allOpen in new window

can't you see which one you omitted?

        Dim da As New OleDb.OleDbDataAdapter("Update AOP6A Inner Join AOP5 On AOP6A.ID=AOP5.ID Set AOP6A.CA2 = AOP5.Country", ConnectionString)

Select allOpen in new window

Thanks, will let you know how it works tomorrow.

Victor

Dont use Fill. Fill works with Select query not Update. Try this code

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\aopt2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate"

Dim dbcon As New OleDbConnection(connectionstring)
dbcon.Open
Dim dbcmd As New OleDbCommand
dbcmd.Connection = dbcon
dbcmd.CommandText = "Update AOP6A AOP5 Set CA2=(Select Country From AOP5 Where SN=AOP5.SN)"
dbcmd.ExecuteNonQuery()
dbcmd.Dispose
dbcon.Close
dbcon.Dispose

End Sub

Select allOpen in new window

Hello,

I tried the code from the last post, but I received the folowing error:

Operation must use an updateable query.

on line:

dbcmd.ExecuteNonQuery()

Thanks,

Victor

Do I need to import something? I'm getting an error on dbcmd.SelectCommand (Error: SelectCommand is not a member of System.Data.OleDb.OleDbCommand)

I am getting Data type mismatch in criteria expression.error. The  ID in your code was replaced by SN which is a text field, could that be the problem?

Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\aopt2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate"
        Dim dbcon As New OleDbConnection(ConnectionString)
        dbcon.Open()
        Dim dbcmd As New OleDbCommand
        dbcmd.Connection = dbcon
        dbcmd.CommandText = "Select * From AOP5"
        Dim dTable As New DataTable
        Dim dbadp As New OleDbDataAdapter(dbcmd)
        dbadp.Fill(dTable)

        For i As Integer = 0 To dTable.Rows.Count - 1
            dbcmd.CommandText = "Update AOP6A Set CA2='" & dTable.Rows(i).Item(1) & "' Where SN=" & dTable.Rows(i).Item(0)
            dbcmd.ExecuteNonQuery()
        Next
        dTable.Dispose()
        dbcmd.Dispose()
        dbcon.Close()
        dbcon.Dispose()

If its a Text field, change

dbcmd.CommandText = "Update AOP6A Set CA2='" & dTable.Rows(i).Item(1) & "' Where SN=" & dTable.Rows(i).Item(0)


to

dbcmd.CommandText = "Update AOP6A Set CA2='" & dTable.Rows(i).Item(1) & "' Where SN='" & dTable.Rows(i).Item(0) & "'"

It worked! but I'm confused. I have another column COUNTRYALL in AOP5 which contains a string of countries:BEL,CAN,FRA,USA etc..

When I replace the code with the one below, countryall is the 11th column in the table.

dbcmd.CommandText = "Update AOP6A Set CA2='" & dTable.Rows(i).Item(11) & "' Where SN='" & dTable.Rows(i).Item(0) & "'"

It doesn't copy the countryall data to the CA2 table in AOP6A, How do I choose another column in AOP5 to populate CA2?

Thanks,

Victor

Please disregard my last post.

It's working great!

Thank You very much.

Victor

Thank You!

Glad to help :-)