在 Access 中使用来自 SQL 服务器存储过程的输出参数

Question

在从 Access 2013 VBA 执行过程后，我试图从 SQL Server 2008 中的存储过程中获取输出变量（新标识列）。我并不完全了解 adodb 的所有内容，而且我已经尝试了不同文章中的许多内容，但都无济于事。这就是我现在的处境...

存储过程：

PROCEDURE [proc_NewClient]
    @Type INT, 
    @PhoneIntakeID INT,
    @ClientID INT = NULL,
    @NewPSID INT = null OUTPUT (2 possible ways to call the proc, one does not produce an output variable)

   INSERT INTO tblClientDetails (ClientID, PhoneIntakeID, Client_Status) 
   VALUES (@ClientID, @PhoneIntakeID, 'Applicant')

   DECLARE @NewClientDetailID int
   SELECT @NewClientDetailID = SCOPE_IDENTITY()

   INSERT INTO tblPS_Psychosocial (ClientDetailID, Client) 
   VALUES (@NewClientDetailID, @ClientID)

   SELECT @NewPSID = SCOPE_IDENTITY()

   INSERT INTO tblPS_AbuseHistory (PsychosocialID) 
   VALUES (@NewPSID)

   INSERT INTO tblPS_FamilyHistory(PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_FinancialHistory (PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_LegalHistory (PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_MedicalHistory (PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_PsychiatricHistory (PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_SocialHistory (PsychosocialID)  VALUES (@NewPSID)
   INSERT INTO tblPS_SpiritualHistory (PsychosocialID) VALUES (@NewPSID)
   INSERT INTO tblPS_SubstanceHistory (PsychosocialID) VALUES (@NewPSID)

   INSERT INTO tblVocAssessment(ClientDetailID) VALUES (@NewClientDetailID)

从我得到的表格中：

    Dim cnn As ADODB.Connection
            Dim cmd As New ADODB.Command, rs As New ADODB.Recordset, param1 As New ADODB.Parameter, param2 As New ADODB.Parameter, param3 As New ADODB.Parameter, param4 As New ADODB.Parameter
            Set cnn = New ADODB.Connection
            cnn.ConnectionString = "DRIVER=SQL Server;SERVER=SRV-DB01;DATABASE=TWHClientMgmt;Trusted_Connection=Yes"

            cnn.Open cnn.ConnectionString

            Set cmd = New ADODB.Command
            cmd.ActiveConnection = cnn
            cmd.CommandType = adCmdStoredProc
            cmd.CommandText = "[THEWOMENSHOME\jboyd].proc_NewClient"


            Set param1 = cmd.CreateParameter("@Type", adinteger, adparamInput, , 2)
            cmd.Parameters.Append param1
            Set param2 = cmd.CreateParameter("@PhoneIntakeID", adinteger, adparamInput, , Me.PhoneIntakeID)
            cmd.Parameters.Append param2
            Set param3 = cmd.CreateParameter("@ClientID", adinteger, adparamInput, , intNewID)
            cmd.Parameters.Append param3
            Set param4 = cmd.CreateParameter("@NewPSID", adinteger, adParamOutput)
            cmd.Parameters.Append param4

rs.open cmd

至此代码有效，生成了新记录等。当我运行来自 SQL 的存储过程服务器时，它 returns 正确的标识列号，但是我尝试了多种方法来引用 VBA 中的输出，但总是以空值结束。我如何在此处正确引用它？

Answer 1

要检索存储过程的 OUTPUT 参数的值，您只需 .Execute ADODB.Command，然后检索相应 ADODB.Parameter 的 .Value，如下所示：

cmd.Execute
' retrieve and display the returned OUTPUT parameter value
Debug.Print cmd.Parameters("@NewPSID").Value

Answer 2

调用存储过程的简单 DAO 解决方案：

Public Function RunSqlQuery(q As String) As Variant

Dim cdb As DAO.Database
Dim qdf As DAO.QueryDef
Dim rs As Recordset

Set cdb = CurrentDb
Set qdf = cdb.CreateQueryDef("")
qdf.Connect = cdb.TableDefs("dbo_Setup").Connect  ' your attached table
qdf.SQL = q
qdf.ReturnsRecords = True
Set rs = qdf.OpenRecordset()
RunSqlQuery = rs.Fields(0)  ' you also can output more than one parameter from a stored procedure as fields
rs.Close
Set rs = Nothing
Set qdf = Nothing
Set cdb = Nothing

End Function

现在，调用该函数，以与在 SQL 服务器上相同的方式定义查询：

? RunSQLQuery("DECLARE @param1 varchar(16);   exec proc_MyStoredProcedure @param1 OUTPUT;  SELECT @param1")

在 Access 中使用来自 SQL 服务器存储过程的输出参数

Using output parameter from SQL Server stored procedure in Access

ms-access

vba

stored-procedures

output-parameter

sql-server-2008