Access中的PassThrough查询

Question

我刚开始使用来提升访问权限(2007-2010年)的前端。

我编写了一个管理SQL连接的类模块。为了自动调用函数、调用过程和动态SQL字符串，最后两个函数成功地返回一个表，使用我附加到DAO.recordset的SELECT语句来进一步提取结果。

但是，当试图对insert语句执行相同的操作时，我遇到了一个问题，SQLpass身查询是：

DECLARE @ret int;
BEGIN TRANSACTION T1;
BEGIN TRY
INSERT INTO dbo.[Munten](Munt, Decimalen, Volgorde) VALUES ('XYZ', 4, 99)
END TRY
BEGIN CATCH
IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION T1;
END CATCH;
IF @@TRANCOUNT = 0
SET @ret = 0
ELSE
BEGIN
        COMMIT TRANSACTION T1;
    SET @ret = 1
END;
SELECT @ret as Retval;

这在返回一列记录的上运行良好，但在执行poass身查询时，我得到：

“返回记录属性设置为true的Passtrhough没有返回任何记录”

将访问代码下垂：

Public Function AddRecord(TblName As String, Connectstring As String,      ParamArray Pars()) As Boolean
Dim s As String, I As Integer, str As String, sc As String, sv As String, rs As DAO.Recordset
ProcList.Start procmodule, "AddRecord", TblName, Connectstring, Pars()
On Local Error GoTo ErrHandler
With appdb.CreateQueryDef("")
    If Len(Connectstring) = 0 Then
       .Connect = StConnectstr
    Else
       .Connect = Connectstring
   End If
   For I = 0 To UBound(Pars)     ' ubound=-1 if no pars are passed
       If I Mod 2 = 0 Then     ' list of columns
          If I > 0 Then sc = sc & ", "
          sc = sc & Pars(I)
       Else                    '  list of values
          If I > 1 Then sv = sv & ", "
          If IsDate(Pars(I)) Then
              sv = sv & DateForSQL(Pars(I))
          ElseIf IsNumeric(Pars(I)) Then
              sv = sv & ConvDecimal(Pars(I), True)
          Else
              sv = sv & cSquote & Pars(I) & cSquote
         End If
       End If
   Next
   s = "INSERT INTO " & Me.WithSchema(TblName, IsTable) & "(" & sc & ") VALUES (" & sv & ")"
   str = EmbedTryCatch(s, .Connect)
   .ReturnsRecords = True
   .SQL = str
   AddRecord = (.OpenRecordset(, dbSQLPassThrough).Fields(0) <> 0)
   .Close
End With
Exit_Here:
     ProcList.Leave
     Exit Function
ErrHandler:
     If Error_message() Then Resume 0
     Resume Exit_Here
End Function

Private Function EmbedTryCatch(SQLstring As String, Connectstr As String) As String
EmbedTryCatch = "DECLARE @ret BIT;" & vbCrLf _
    & "BEGIN TRANSACTION T1;" & vbCrLf _
    & "BEGIN TRY" & vbCrLf _
        & SQLstring & vbCrLf _
    & "END TRY" & vbCrLf _
    & "BEGIN CATCH" & vbCrLf _
        & "IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION T1;" & vbCrLf _
    & "END CATCH;" & vbCrLf _
    & "IF @@TRANCOUNT = 0" & vbCrLf _
        & "SET @ret = 0" & vbCrLf _
    & "ELSE" & vbCrLf _
        & "BEGIN" & vbCrLf _
            & "COMMIT TRANSACTION T1;" & vbCrLf _
            & "SET @ret = 1" & vbCrLf _
        & "END;" & vbCrLf _
    & "SELECT @ret as Retval;"
End Function

渔获物在哪里？

Answer 1

您需要将查询的ReturnsRecords属性设置为False，因为插入查询不会返回任何内容。

还有一个好主意，包括：

set nocount on

作为您的直通查询访问的第一行，似乎无法理解您将在SSMS中看到的返回消息。