Question

Hey all i am getting an odd returned value in VB.net when i try to find the highest ID number in my table:

This is my VB.net code:

    objConn = New MySqlConnection(product.strConnString)
    objConn.Open()

    strSQL = "SELECT MAX(id) FROM product;"

    Try
        objCmd = New MySqlCommand(strSQL, objConn)
        dtReader = objCmd.ExecuteReader()

        While dtReader.Read()
            nextDBID = dtReader(0)
        End While

        objConn.Close()
        objConn = Nothing
    Catch ex As Exception
        MsgBox("LoadProduct: " & ex.Message)
    End Try

When i check the value of nextDBID it comes up as 39. However, there is no 39 in the database!

When i run that exact query in mySQL GUI i get this:

select MAX(id) from fivestar_range.product;

37

My id data field is this in the product table:

37
10
11
12
7
8
6
5
4
3
2
1
13
14
36
21

I even tried using this query:

SELECT id FROM product ORDER BY ID DESC LIMIT 1;

And i still end up with 39 in the VB.net but still 37 in mySQL GUI.

What’s going on that i’m overlooking?

Answer 1

Check your connection strings. You are likely looking at two different databases.