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Tip of the Day
Language: VB5, VB6
Expertise: Intermediate
Sep 11, 2003

Use CopyFromRecordset With ODBC Recordsets

You can create an ODBCDirect recordset for use with the Excel Range objects CopyFromRecordset method by using the DAO.Connection objects OpenRecordset method:

Public Function CreateDaoRecordset( _
	ByVal sDataSource As String, _
	ByVal sUser As String, _
	ByVal sPwd As String, _
	ByVal sSql As String) _
	As DAO.Recordset

	Dim daoWs As Workspace
	Dim daoConn As DAO.Connection
	Dim sConn As String
	Dim dbEng As DBEngine
	Set dbEng = New DBEngine
	Set daoWs = dbEng.CreateWorkspace("", "admin", _
		"", dbUseODBC)
	sConn = "ODBC;DSN=" & sDataSource & ";UID=" _
		& sUser & ";PWD=" & sPwd
	Set daoConn = daoWs.OpenConnection("", , , sConn)
	Set CreateDaoRecordset = _
		daoConn.OpenRecordset(sSql, dbOpenSnapshot)
End Function
The CopyFromRecordset method also works with Oracle8 databases. The trick: You must use a proper ODBC driver. The Microsoft ODBC driver for Oracle, msorcl32.dll version 02.573.3513.0, doesnt support the NUMBER data type in this method. The Oracle ODBC driver, sqora32.dll version 8.0.5.0.0, treats the NUMBER(n) data type as a dbDecimal and generates Unspecified Automation Error in the CopyFromRecordset method. But it accepts the NUMBER data type (without precision), interpreting it as a dbDouble.

CopyFromRecordset doesnt copy column names to the Excel worksheet for further data analysis or reporting, so use this simple code instead. It copies column names to the first row of the active Excel worksheet oWsh and copies all data from the daoRs Recordset. The code assumes oWsh and daoRs have been declared and initialized elsewhere:



oWsh.Activate
	For iCol = 0 To daoRs.Fields.Count - 1
		oWsh.Cells(1, iCol + 1).Value = _
		daoRs.Fields(iCol).Name
 Next
	oWsh.Range("A2").CopyFromRecordset daoRs
Leonid Strakovskiy
 
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