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4GuysFromRolla.com : ASP FAQS : Databases, General


Question:

How can I run a stored procedure from ASP using only the ADO connection object?


[Print this FAQ]

Answer: Here are two good ways to run stored procedures that accept only input parameters or no parameters at all. The first is simple; call the Execute method of the connection object, passing the correct string to run the procedure. The first example calls a stored proc that takes one parameter. On one line of code it executes the procedure and also executes the GetString method on the recordset that the Execute method returns.

<%
    Dim objConn, intParam
    intParam = 2
    Set objConn = Server.CreateObject("ADODB.Connection")
    Set objRS = Server.CreateObject("ADODB.Recordset")
    objConn.Open "NWind" , "Guest", "welcome"

  ' Execute, Getstring and Write all on one line:
    Response.Write objConn.Execute("pGetEmployees " & intParam).GetString()

    Set objConn = Nothing
%>


Note that the above method will also work on Access 97/2000 parameter queries. Here is the SQL server stored procedure that this example calls (in the SQL Server Northwind sample database):

CREATE PROCEDURE pGetEmployees
    @intNumber int = NULL
AS
IF (@intNumber IS NULL) OR (@intNumber < 1)
    SELECT * FROM Employees
ELSE
    SELECT * FROM Employees WHERE EmployeeID = @intNumber


The second method seems to be lesser known, but is very intuitive. You can call SQL Server and Access 97/2000 procedures and queries, respectively, as if they were methods of the connection object (I haven't had a chance to test this in Oracle, but it may also work in that database). Here is the example of that method:

<%
    Dim objConn, intParam
    intParam = 2
    Set objConn = Server.CreateObject("ADODB.Connection")

  ' You must create a recordset to pass to the call, if you
  ' are returning rows from the database:
    Set objRS = Server.CreateObject("ADODB.Recordset")
    objConn.Open "NWind" , "Guest", "welcome"

  ' Pass any input parameters first, then the
  ' recordset object to populate with data
    objConn.pGetEmployees intParam, objRS

  ' Do something with the recordset here
    Set objRS = Nothing
    Set objConn = Nothing
%>


For more info on stored procedures see these links:
Parameterized Queries in Access
Writing a Stored Procedure
Using Dynamic SQL Statements in Stored Procedures

Happy Programming!


FAQ posted by Richard Lowe at 10/31/2000 1:16:22 AM to the Databases, General category. This FAQ has been viewed 63,507 times.

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