VBA multiple SQL queries

[lees57]

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Hi,
I really need a help on setting VBA code for running multiple SQL queries.

My goal is to run multiple difference queries through the customized function.
Is it possible to soft code the SQL string?
I would be super appreciated with your help..!!!

[Bob Phillips]

What do you mean by 'soft code the SQL string'? But as a rule it is better to run stored procedures/queries in the database rather than code the SQL in VBA.

[Kenneth Hobs]

Get it to work manually first. Be sure to add the reference object(s) if you are going to use early binding as you did in the attached file.

Here is an ADO UDF example:

'http://www.experts-exchange.com/Software/Office_Productivity/Office_Suites/MS_Office/Excel/Q_23640071.htmlPublic 
Sub RunSQLQuery( _
      ByVal SourceWorkbookPath As String, _
      ByVal SQLCommand As String, _
      ByRef Destination As Variant, _
      Optional TablesHaveHeaders As Boolean = True, _
      Optional WriteHeader As Boolean _
   )


' Run SQL command against one or more tables in a workbook and write the
' resulting recordset to the range starting at the destination specified.
'
' Syntax
'
' RunSQLQuery(SourceWorkbookPath, SQLCommand, Destination, [WriteHeader])
'
' SourceWorkbookPath - The full path to the workbook in which the source tables
'   reside. The workbook must have been previously saved to disk (although the
'   most current version does not need to be saved to get the most recent
'   data). To get the full path for an open workbook using the workbook object
'   use:
'      SourceWorkbookPath.Path & "\" & SourceWorkbookPath.Name
'   The source workbook can be open or closed.
'
' SQLCommand - Any valid SQL command. Reference tables either by cell
'   reference:
'      SELECT * FROM [Sheet1$A1:C100]
'   or by range name:
'      SELECT * FROM [Table1]
'   Field names are determined by the values in the first row of each table. To
'   reference a field name use square brackets around the name:
'      SELECT T1.[FieldName] FROM [Table1] AS T1
'
' Destination - Any valid range or a variant variable. If a range is passed
'   then the resulting recordset is copied to the cells starting at the top
'   left cell in Destination. As many cells are used as are needed. If an empty
'   array is passed (UBound = -1) then the query result is returned as an
'   array. Otherwise the resulting recordset is returned in Destination.
'
' TablesHaveHeaders - Pass True if the source tables have a header row. Pass
'   False if not. Optional. If omitted then True is assumed. If the source
'   tables do not have headers then the columns are named "F1", "F2", etc.
'
' WriteHeader - Pass True to write a header row, False to not write the
'   headers. Optional. If omitted then False is assumed.


   Dim RecordSet As Object ' ADODB.RecordSet
   Dim ConnectionString As String
   Dim Column As Long
   Dim Row As Long
   Dim ReturnArray As Boolean
   Dim RecordCount As Long
   
   Set RecordSet = CreateObject("ADODB.RecordSet") ' New ADODB.RecordSet
   
   If IsArray(Destination) Then
      If UBound(Destination) = -1 Then ReturnArray = True
   End If
   
   ' Open the ADODB connection and run the query
   ConnectionString = _
      "Provider=Microsoft.Jet.OLEDB.4.0;" & _
      "Data Source=" & SourceWorkbookPath & ";" & _
      "Extended Properties='Excel 8.0;HDR=" & IIf(TablesHaveHeaders, "Yes", "No") & "'"
   RecordSet.Open SQLCommand, ConnectionString, 2, 1, 1 ' adOpenDynamic, adLockReadOnly, adCmdText
   
   ' Handle the results according to what was passed in Destination
   If TypeName(Destination) = "Range" Then
      ' Copy recordset to range
      Application.ScreenUpdating = False
      If WriteHeader Then
         For Column = 1 To RecordSet.Fields.Count
            Destination.Cells(1, Column).Value = RecordSet.Fields(Column - 1).Name
         Next Column
         Destination.Cells(1, 1).Resize(1, RecordSet.Fields.Count).Font.Bold = True
         Set Destination = Destination.Offset(1)
      End If
      Destination.CopyFromRecordset RecordSet
      Application.ScreenUpdating = True
      RecordSet.Close
   ElseIf ReturnArray Then
      ' Return an array
      RecordSet.MoveFirst
      Do While Not RecordSet.EOF
         RecordCount = RecordCount + 1
         RecordSet.MoveNext
      Loop
      ReDim Destination(1 To RecordCount + IIf(WriteHeader, 1, 0), 1 To RecordSet.Fields.Count)
      Row = 1
      If WriteHeader Then
         For Column = 1 To RecordSet.Fields.Count
            Destination(Row, Column) = RecordSet.Fields(Column - 1).Name
         Next Column
         Row = Row + 1
      End If
      RecordSet.MoveFirst
      Do While Not RecordSet.EOF
         For Column = 1 To RecordSet.Fields.Count
            Destination(Row, Column) = RecordSet.Fields(Column - 1).Value
         Next Column
         Row = Row + 1
         RecordSet.MoveNext
      Loop
      RecordSet.Close
   Else
      ' Return recordset
      Set Destination = RecordSet
   End If


End Sub