SQL Server 通过存储过程将表返回到 MS Access

Question

I'm trying to return a table back to MS Access that has 50+ columns and the rows can vary from 0 to 5000. For each case there can be multiple records and vehicle type.

I can execute the stored procedure and it works fine. I'm having trouble getting the data to return back to MS Access.

Stored procedure code:

ALTER PROCEDURE [dbo].[pJDB_Export] 
    (@dteFrom int, 
     @dteTo int,
     @Veh nvarchar(80))
AS
BEGIN
    SET NOCOUNT ON;

    DECLARE @stWhere VARCHAR(200)

    SELECT DISTINCT [Case] 
    INTO #tmp 
    FROM data 
    WHERE [VEHICLE TYPE] = @Veh 
      AND (CY BETWEEN @dteFrom AND @dteTo)

    SELECT DISTINCT * 
    FROM dbo.vdata_Export_V3_3_2 v
    INNER JOIN #tmp t ON v.[CASE] = t.[CASE] 

MS Access code:

Function Exec_pJDB_export(sqlConn as string)
    Dim conn As ADODB.Connection
    Dim cmd As ADODB.Command

    Dim iFrom, iTo As Integer
    Dim stv As String
    iFrom = 1999
    iTo = 2002
    stv = "1 TO 2 TON TRUCKS (COMMERCIAL)"
    Set conn = New ADODB.Connection

    conn.Open "DSN=Cars"
    conn.ConnectionString = sqlConn
    Set cmd = New ADODB.Command
    cmd.ActiveConnection = conn
    cmd.CommandType = adCmdStoredProc
    cmd.CommandText = "pJDB_export"

    cmd.Parameters.Append cmd.CreateParameter("@dteFrom", adInteger, adParamInput, , iFrom)
    cmd.Parameters.Append cmd.CreateParameter("@dteTo", adInteger, adParamInput, , iTo)
    cmd.Parameters.Append cmd.CreateParameter("@vehicle", adVarChar, adParamInput, 80, stv)

    cmd.Execute
    conn.Close

End Function

Answer 1

The execute method returns a recordset object . It is this object that contains your records. Here is example:

Function Exec_pJDB_export(sqlConn As String)
    Dim conn As ADODB.Connection
    Dim cmd As ADODB.Command
    Dim rs As ADODB.Recordset               ' ADO recordset object, for accessing records.

    Dim iFrom, iTo As Integer
    Dim stv As String
    iFrom = 1999
    iTo = 2002
    stv = "1 TO 2 TON TRUCKS (COMMERCIAL)"
    Set conn = New ADODB.Connection

    conn.Open "DSN=Cars"
    conn.ConnectionString = sqlConn
    Set cmd = New ADODB.Command
    cmd.ActiveConnection = conn
    cmd.CommandType = adCmdStoredProc
    cmd.CommandText = "pJDB_export"

    cmd.Parameters.Append cmd.CreateParameter("@dteFrom", adInteger, adParamInput, , iFrom)
    cmd.Parameters.Append cmd.CreateParameter("@dteTo", adInteger, adParamInput, , iTo)
    cmd.Parameters.Append cmd.CreateParameter("@vehicle", adVarChar, adParamInput, 80, stv)

    ' This line has changed.
    Set rs = cmd.Execute()


    ' Loops over the records.
    Do Until rs.EOF

        ' Display the contents of column one to the user.
        MsgBox rs.Fields(0).Value

        rs.MoveNext
    Loop



    rs.Close
    conn.Close
End Function

Quick overview:

1. EOF stands for End of File . It is true when you have viewed all records.
2. Don't forget to call MoveNext , or the do loop will continue forever!

The line rs.Fields(0).Value can be changed to rs.Fields("YourFieldName").Value , if you prefer. I find it easier to refer to fields by name, rather than position.