执行SQL文，生成EXCEL

''' <summary>
''' SQL文執行結果のEXCEL出力
''' </summary>
''' <param name="connString">OLEDB接続文字列</param>
''' <param name="sqlString">SQL文</param>
''' <param name="savePath">出力ファイルパス</param>
''' <remarks></remarks>
Public Shared Sub ExecSqlToExcel(ByVal connString As String, ByVal sqlString As String, _
ByVal savePath As String)
Dim mExcelApplication As Excel.Application = Nothing
Dim mWorkbook As Excel.Workbook = Nothing
Dim mWorkSheet As Excel.Worksheet = Nothing
Dim mQueryTable As Excel.QueryTable = Nothing
Try
mExcelApplication = New Excel.Application()
mWorkbook = mExcelApplication.Workbooks.Add
mWorkSheet = mWorkbook.Sheets(1)
mQueryTable = mWorkSheet.QueryTables.Add(connString, mWorkSheet.Range("A1"), sqlString)
mQueryTable.FieldNames = True
mExcelApplication.DisplayAlerts = False
mQueryTable.Refresh()
mWorkbook.SaveAs(savePath)
Catch ex As Exception
Throw ex
Finally
If Not mWorkSheet Is Nothing Then
mQueryTable = Nothing
mWorkbook.Close()
mWorkbook = Nothing
mExcelApplication = Nothing
End If
End Try
End Sub
说明：
connString="OLEDB;Provider=SQLOLEDB;server=xxx;uid=xxx;pwd=xxx;Initial Catalog=xxx"
savePath应该是完整的路径（含文件名）
导出的excel没有格式要求，如果有必要，可以通过vba对该对象进行格式操作
第一行是select的字段名，如果想要汉字形式，则给每个字段加上汉字别名即可