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下面的 VBA 子例程可以很好地运行大多数查询。（即SELECT * FROM DUAL：）

Sub DisplayQuery(QueryString As String)
  Dim rs As New ADODB.Recordset
  Dim connStr As String
  connStr = _
   "Provider=MSDAORA.1;" _
   & "User ID=abc;Password=123;" _
   & "Data Source=xxx/xxx;"
  out QueryString

  rs.Open QueryString, connStr, adOpenStatic, adLockOptimistic
  Range("DataTable").Clear
  Cells(1, 1).CopyFromRecordset rs
End Sub

但是，当我运行下面的查询时，会立即弹出以下错误消息：Run-time error '3704':Operation is not allowed when the object is closed.

with all_hours as
  ( select to_date('2009-11-03 05:00 PM','yyyy-mm-dd hh:mi PM') + numtodsinterval(level-1,'hour') hour
      from dual
   connect by level <= 4 /*hours*/

  )
  select h.hour
       , count(case when h.hour = trunc(s.sampled_on,'hh24') then 1 end) sampled
       , count(case when h.hour = trunc(s.received_on,'hh24') then 1 end) received
       , count(case when h.hour = trunc(s.completed_on,'hh24') then 1 end) completed
       , count(case when h.hour = trunc(s.authorized_on,'hh24') then 1 end) authorized
    from all_hours h cross join sample s
   group by h.hour

为什么？

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2 回答 2

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如果我没记错的话，ADO Command 对象有一个默认超时（我认为是 30 秒），这可能会导致您的问题：应该有一个类似的设置

cn.ConnectionTimeout = (your value here)

你可以扩展。

于 2009-11-05T18:54:14.860 回答
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我只是重组了我的查询（链接），以便可以将其放入视图中。然后我在 Excel 中创建了一个连接来查看名称。

于 2009-11-10T16:02:04.460 回答