OpenSchema Method Example (VB)
This example uses the OpenSchema method to display the name and type of each table in the Pubs database.
'BeginOpenSchemaVB
'To integrate this code
'replace the data source and initial catalog values
'in the connection string
Public Sub Main()
On Error GoTo ErrorHandler
Dim Cnxn As ADODB.Connection
Dim rstSchema As ADODB.Recordset
Dim strCnxn As String
Set Cnxn = New ADODB.Connection
strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _
"Initial Catalog='Pubs';Integrated Security='SSPI';"
Cnxn.Open strCnxn
Set rstSchema = Cnxn.OpenSchema(adSchemaTables)
Do Until rstSchema.EOF
Debug.Print "Table name: " & _
rstSchema!TABLE_NAME & vbCr & _
"Table type: " & rstSchema!TABLE_TYPE & vbCr
rstSchema.MoveNext
Loop
' clean up
rstSchema.Close
Cnxn.Close
Set rstSchema = Nothing
Set Cnxn = Nothing
Exit Sub
ErrorHandler:
' clean up
If Not rstSchema Is Nothing Then
If rstSchema.State = adStateOpen Then rstSchema.Close
End If
Set rstSchema = Nothing
If Not Cnxn Is Nothing Then
If Cnxn.State = adStateOpen Then Cnxn.Close
End If
Set Cnxn = Nothing
If Err <> 0 Then
MsgBox Err.Source & "-->" & Err.Description, , "Error"
End If
End Sub
'EndOpenSchemaVB
This example specifies a TABLE_TYPE query constraint in the OpenSchema method Criteria argument. As a result, only schema information for the Views specified in the Pubs database are returned. The example then displays the name(s) and type(s) of each table(s).
Attribute VB_Name = "OpenSchema"