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4GuysFromRolla.com : ASP FAQS : Databases, General


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):

    @intNumber int = NULL
IF (@intNumber IS NULL) OR (@intNumber < 1)
    SELECT * FROM Employees
    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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