Access Export Subform to excel - vba

Question

I'm trying to write some VBA to export filtered records from a subform. I've found a number of post related to this issue and I've cobbled the code below from those post.
When I run it I get a run-time error saying:
the Object '__temp' already exist.
When I click debug it highlights the line
Set qrydef = db.CreateQueryDef(strTempQryDef, strSQL)
Thank you for you help.
Private Sub ExportSubform()
Dim db As dao.Database
Dim qrydef As dao.QueryDef
Dim strSQL As String
Dim bolWithFilterOn As Boolean
Dim strTempQryDef As String
Dim strRecordSource As String
strTempQryDef = "__temp"
bolWithFilterOn = me.subsearch_frm.Form.FilterOn
strRecordSource = me.subsearch_frm.Form.RecordSource
If InStr(strRecordSource, "SELECT ") <> 0 Then
strSQL = strRecordSource
Else
strSQL = "SELECT * FROM [" & strRecordSource & "]"
End If
' just in case our sql string ends with ";"
strSQL = Replace(strSQL, ";", "")
If bolWithFilterOn Then
strSQL = strSQL & _
IIf(InStr(strSQL, "WHERE ") <> 0, " And ", " Where ") & _
me.subsearch_frm.Form.Filter
End If
Set db = CurrentDb
'create temporary query
Set qrydef = db.CreateQueryDef(strTempQryDef, strSQL)
db.QueryDefs.Append qrydef
Set qrydef = Nothing
DoCmd.TransferSpreadsheet TransferType:=acExport, _
SpreadsheetType:=acSpreadsheetTypeExcel12Xml, _
TableName:=strTempQryDef, _
FileName:=Replace(CurrentProject.Path & "\", "\\", "\") & strTempQryDef & ".xlsx"
' Delete the temporary query
db.QueryDefs.Delete strTempQryDef
Set db = Nothing
End Sub

Answer 1

Per the documentation:
If the object specified by name is already a member of the QueryDefs collection, a run-time error occurs.
As such, you should delete the temporary query before attempting to create it. To do this, you could use code along the lines of the following:
On Error Resume Next
DoCmd.DeleteObject acQuery, strTempQryDef
On Error GoTo 0
Also, per the documentation:
In a Microsoft Access workspace, if you provide anything other than a zero-length string for the name when you create a QueryDef, the resulting QueryDef object is automatically appended to the QueryDefs collection.
As such, you don't need this line:
db.QueryDefs.Append qrydef