Why Is My VBA Code Failing to Connect to My MySQL Database and How Can I Fix It?

Using VBA to Connect Excel to a MySQL Database

Connecting to a MySQL database from within Excel using VBA can be challenging, especially when the standard connection methods fail to work. Understanding the specific error encountered is crucial for finding a solution.

In the provided code, the connection error is most likely caused by the incorrect use of the New keyword. To establish the connection, you should create an instance of the ADODB.Connection object without using New. Hence, the corrected code should be:

<code class="vba">Dim oConn As ADODB.Connection
Private Sub ConnectDB()
Set oConn = CreateObject("ADODB.Connection")
Dim str As String
str = "DRIVER={MySQL ODBC 5.2.2 Driver};" & _
"SERVER=sql100.xtreemhost.com;" & _
"PORT=3306" & _
"DATABASE=xth_9595110_MyNotes;" & _
"UID=xth_9595110;" & _
"PWD=myPassword;" & _
"Option=3"
''' error '''
oConn.Open str
End Sub</code>

Additionally, note that the codes used to insert data from the database into Excel are also slightly incorrect. The corrected version of the InsertData subroutine is:

<code class="vba">Private Sub InsertData()
Dim rs As ADODB.Recordset
Set rs = CreateObject("ADODB.Recordset")
ConnectDB
sql = "SELECT * FROM ComputingNotesTable"
rs.Open sql, oConn, adOpenDynamic, adLockOptimistic
Do Until rs.EOF
    Range("A1").Select
    ActiveCell = rs.Fields("Headings")
    rs.MoveNext
Loop
rs.Close
oConn.Close
Set rs = Nothing
End Sub</code>

For comparison, here's an example of PHP code that successfully connects to a MySQL server:

<code class="php">$connect = mysql_connect("sql100.xtreemhost.com","xth_9595110","myPassword") or die(mysql_error());
mysql_select_db("myTable",$connect);</code>

By following these modified codes, you should be able to establish a connection to your MySQL database and interact with its data from within Excel using VBA.

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