1 This is also the simplest method, with two input parameters and no return value:
set connection = server.createobject(adodb.connection)
connection.open someDSN
Connection.Execute procname varvalue1, varvalue2
'Clear all objects to nothing and release resources
connection.close
set connection=nothing
2 If you want to return the Recordset set:
set connection = server.createobject(adodb.connection)
connection.open someDSN
set rs = server.createobject(adodb.recordset)
rs.Open Exec procname varvalue1, varvalue2,connection
'Clear all objects to nothing and release resources
rs.close
connection.close
setrs=nothing
set connection=nothing
3 Neither of the above two methods can have a return value (except Recordset). If you want to get the return value, you need to use the Command method.
First of all, there are two types of return values. One is to directly return a value in the stored procedure, just like the function return value of C and VB; the other is to return multiple values, and the variable names to store these values need to be specified in the calling parameters first.
This example needs to handle multiple parameters, input parameters, output parameters, return record sets and a direct return value (is it complete enough?)
The stored procedure is as follows:
use pubs
GO
-- Create a stored procedure
create procedure sp_PubsTest
--Define three parameter variables. Note that the third one is specially marked for output.
@au_lname varchar (20),
@intID int,
@intIDOut int OUTPUT
AS
SELECT @intIDOut = @intID + 1
SELECT *
FROM authors
WHERE au_lname LIKE @au_lname + '%'
--Return a value directly
RETURN @intID + 2
The asp program that calls this stored procedure is as follows:
<%@ Language=VBScript %>
<%
Dim CmdSP
DimadoRS
Dim adCmdSPStoredProc
Dim adParamReturnValue
Dim adParaminput
Dim adParamOutput
Dim adInteger
Dim iVal
Dim oVal
Dim adoField
Dim adVarChar
'These values are predefined constants in VB and can be called directly, but they are not predefined in VBScript
adCmdSPStoredProc = 4
adParamReturnValue = 4
adParaminput = 1
adParamOutput = 2
adInteger = 3
adVarChar = 200
iVal = 5
oVal = 3
'Create a command object
set CmdSP = Server.CreateObject(ADODB.Command)
'Create link
CmdSP.ActiveConnection = Driver={SQL Server};server=(local);Uid=sa;Pwd=;Database=Pubs
'Define the command object call name
CmdSP.CommandText = sp_PubsTest
'Set the command call type to be a stored procedure (adCmdSPStoredProc = 4)
CmdSP.CommandType = adCmdSPStoredProc
'Add parameters to the command object
'Define the stored procedure to have a direct return value, and it is an integer. The default value is 4
CmdSP.Parameters.Append CmdSP.CreateParameter(RETURN_VALUE, adInteger, adParamReturnValue, 4)
'Define a character input parameter
CmdSP.Parameters.Append CmdSP.CreateParameter(@au_lname, adVarChar, adParaminput, 20, M)
'Define an integer input parameter
CmdSP.Parameters.Append CmdSP.CreateParameter(@intID, adInteger, adParamInput, , iVal)
'Define an integer output parameter
CmdSP.Parameters.Append CmdSP.CreateParameter(@intIDOut, adInteger, adParamOutput, oVal)
'Run the stored procedure and get the returned recordset
Set adoRS = CmdSP.Execute
'Print out each record. The fields are virtual and can be ignored.
While Not adoRS.EOF
for each adoField in adoRS.Fields
Response.Write adoField.Name & = & adoField.Value & <br> & vbCRLF
Next
Response.Write<br>
adoRS.MoveNext
Wend
'Print two output values:
Response.Write <p>@intIDOut = & CmdSP.Parameters(@intIDOut).Value & </p>
Response.Write <p>Return value = & CmdSP.Parameters(RETURN_VALUE).Value & </p>
'General cleaning
Set adoRS = nothing
Set CmdSP.ActiveConnection = nothing
Set CmdSP = nothing
%>
There are also other ways, which are a little more biased, and we will talk about them later.
This article refers to many articles, which are not listed here.